Relevant bibliographies by topics / High-speed-cameras

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'High-speed-cameras'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "High-speed-cameras"

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Micro Photonics. "High speed cooled CCD cameras." NDT & E International 27, no. 3 (June 1994): 171. http://dx.doi.org/10.1016/0963-8695(94)90748-x.

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Yanyan Cao, Yanyan Cao, Chao Wang Chao Wang, Qinwei Ma Qinwei Ma, and Shaopeng Ma Shaopeng Ma. "Experimental investigation of the startup time difference between high-speed cameras." Chinese Optics Letters 13, no. 7 (2015): 070401–70405. http://dx.doi.org/10.3788/col201513.070401.

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ANDO, Koshi. "High Speed Cameras : Their Scientific Roles." Journal of the Society of Mechanical Engineers 109, no. 1054 (2006): 710–11. http://dx.doi.org/10.1299/jsmemag.109.1054_710.

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TAKANO, Yasuhide, T. Goji ETOH, and Kohsei TAKEHARA. "Market Research for High-speed Video Cameras." Journal of the Visualization Society of Japan 21, no. 1Supplement (2001): 49–52. http://dx.doi.org/10.3154/jvs.21.1supplement_49.

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Kilkenny, J. D. "High speed proximity focused X-ray cameras." Laser and Particle Beams 9, no. 1 (March 1991): 49–69. http://dx.doi.org/10.1017/s0263034600002330.

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Recent technological developments have resulted in sub 100 ps shutter times of X-ray cameras that are based on the gating of microchannel plates. Moreover, these cameras are reliable enough to be used on large experimental systems. A review is given of the development of gated proximity focused detectors and of the factors affecting their performance.
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Fuller, P. W. W. "Aspects of High Speed Photography 2. Cameras." Journal of Photographic Science 42, no. 2 (March 1994): 66–71. http://dx.doi.org/10.1080/00223638.1994.11738567.

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Connolly, Christine. "High‐speed cameras and laser Doppler vibrometers." Sensor Review 25, no. 2 (June 2005): 100–104. http://dx.doi.org/10.1108/02602280510585664.

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Vollmer, Michael, and Klaus-Peter Möllmann. "High speed and slow motion: the technology of modern high speed cameras." Physics Education 46, no. 2 (March 2011): 191–202. http://dx.doi.org/10.1088/0031-9120/46/2/007.

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Nikolov, Atanas, and Dimo Dimov. "2D Video Stabilization for Industrial High-Speed Cameras." Cybernetics and Information Technologies 15, no. 7 (December 1, 2015): 23–34. http://dx.doi.org/10.1515/cait-2015-0086.

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Abstract The current research concerns the problem of video stabilization “in a point”, which aims to stabilize all video frames according to one chosen reference frame to produce a new video, as by a static camera. Similar task importance relates providing static background in the video sequence that can be usable for correct measurements in the frames when studying dynamic objects in the video. For this aim we propose an efficient combined approach, called “3×3OF9×9”. It fuses our the previous development for fast and rigid 2D video stabilization [2] with the well-known Optical Flow approach, applied by parts via Otsu segmentation, for eliminating the influence of moving objects in the video. The obtained results are compared with those, produced by the commercial software Warp Stabilizer of Adobe-After-Effects CS6.
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Peng, R. "High-speed flash exposure with compact digital cameras." Imaging Science Journal 60, no. 6 (December 2012): 338–43. http://dx.doi.org/10.1179/1743131x11y.0000000028.

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Dissertations / Theses on the topic "High-speed-cameras"

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Berard, Alfredo, Mark Buckley, and John Roach. "Range-Video Network (RNET)." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605989.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California
The deployment of network-based airborne instrumentation systems is leading to cost-efficient replacement of legacy instrumentation systems. One application of airborne data acquisition that has been developed and maintained separately from traditional avionics and orange-wire data acquisition systems is high-speed camera packages. The development of network-based instrumentation systems has led to an opportunity to unify these two previously distinct airborne data acquisition activities. This paper describes the range-video network-based instrumentation system (rNET) being implemented by the 46th Test Wing, 846th Test Support Squadron at Eglin Air Force Base, FL to replace the existing Airborne Separation Video System (ASVS).
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Dobrev, Ivo Tsvetanov. "Full-field vibrometry by high-speed digital holography for middle-ear mechanics." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/328.

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"Hearing loss affects approximately 1 in 10 people in the world and this percentage is increasing every year. Some of the most common causes of hearing loss are disorders of the middle-ear. Early detection and diagnosis of hearing loss as well as research to understand the hearing processes depend on medical and research tools for quantification of hearing capabilities and the function of the middle-ear in the complex acousto-mechanical transformation of environmental sounds into vibrations of the middle-ear, particular of the human tympanic membrane (TM or eardrum). Current ear exams assess the state of a patient’s hearing capabilities mainly based on qualitative evaluation of the healthiness of the TM. Existing quantitative clinical methods for description of the motion of the TM are limited to either average acoustic estimates (admittance or reflectance) or single-point displacement measurements. Such methods could leave examiners and researchers blind to the complex spatio-temporal response of the nanometer scale displacements of the entire TM. Current state-of-the-art medical research tools provide full-field nanometer displacement measurements of the surface of the human TM excited by steady state (tonal) stimuli. However, to fully understand the mechanics of hearing, and the complex acousto-mechanical characteristics of TM in particular, new tools are needed for full-field high-speed characterization of the nanometer scale displacements of the human TM subjected to impulse (wideband) acoustic excitation. This Dissertation reports the development of a new high-speed holographic system (HHS) for full-field nanometer transient (i.e., > 10 kHz) displacement measurement of the human middle-ear and the tympanic membrane, in particular. The HHS allows spatial (i.e., >500k data points) and temporal (i.e., > 40 kHz) resolutions that enable the study of the acoustical and mechanical characteristics of the middle-ear at a level of detail that have never been reached before. The realization of the HHS includes the development and implementation of novel phase sampling and acquisition approaches that allow the use of state-of-the-art high-resolution (i.e., >5 MP) and high-speed (> 80,000 fps) cameras through modular and expandable control architectures. The development of novel acquisition approaches allows the use of conventional speed (i.e., <20 fps) cameras to realize high-temporal resolutions (i.e., <15 us) at equivalent sampling rates of > 50,000 fps with minimum hardware cost and modifications. The design and implementation of novel spatio-temporal phase sampling methods utilize the high temporal resolution (i.e., < 5 us exposure) and frame rate (i.e., >80,000 fps) of high-speed cameras without imposing constraints on their spatial resolution (i.e., >20 um pixel size). Additionally, the research and in-vivo applications capabilities of the HHS are extended through the development and implementation of a holographic otoscope head (OH) and a mechatronic otoscope positioner (MOP). The large (i.e., > 1 GB with > 8x10^9 parameters) spatio-temporal data sets of the HHS measurements are automatically processed by custom parallel data mining and interpretation (PDMI) methods, which allow automatic quantification of medically relevant motion parameters (MRMPs), such as modal frequencies, time constants, and acoustic delays. Such capabilities could allow inferring local material properties across the surface of the TM. The HHS is a new medical tool that enables otologists to improve the quality of diagnosis and treatments as well as provides researchers with spatio-temporal information of the hearing process at a level of detail never reached before. "
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Hartley, William H. "High-Speed Imaging of Polymer Induced Fiber Flocculation." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14627.

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This study presents quantitative results on the effect on individual fiber length during fiber flocculation. Flocculation was induced by a cationic polyacrylamide (cPAM). A high speed camera recorded 25 second video clips. The videos were image-analyzed and the fiber length and the amount of fiber in each sample were measured. Prior to the flocculation process, fibers were fractionated into short and long fibers. Trials were conducted using the unfractionated fiber, short fiber, and long fiber. The short and long fibers were mixed in several trials to study the effect of fiber length. The concentration of cPAM was varied as well as the motor speed of the impeller (RPM). It was found that the average fiber length decreased more rapidly with increasing motor speed. Increasing the concentration of cPAM also led to a greater decrease in average fiber length. A key finding was that a plateau was reached where further increasing the amount of cPAM had no effect. Hence, fibers below a critical length resisted flocculation even if the chemical dose or shear was increased. This critical length was related to the initial length of the fiber.
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Berndtsson, Therese. "Thermographic Measurements of Hot Materials Using a Low- to High-speed RGB-camera : Prospect of RGB-cameras Within the Field of Thermographic Measurements." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74655.

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Monitoring the thermal behavior of material while heated or cooled is of great importance in order to understand the structural behavior of materials. This thesis aims to investigate the prospects for imaging hot materials using an RGB-camera. The main motivation of using an RGB-camera is the very simple set-up and, in comparison to thermal IR-cameras, low price. A method and code enabling thermographic measurements in the temperature range of 800°C up to 1500°C has been produced. Calibration of the RGB-camera was made, the accuracy was predicted to be poor within the temperature range of 1000°C up to about 1200°C. The poor accuracy of the calibration within this range has its source in the non-linear (and irregular) response of the CMOS sensor prohibiting a valid exposure time function to be accurately determined. The calibration is thus performed with different settings (i.e different exposure times and aperture settings) but without any correction for the setting change. The validation experiments were performed in (or very close to) the temperatures where the temperature error was predicted to be the largest. An under-estimation of approximately 30-50°C in the temperature range between 950°C and 1015°C could be seen corresponding to an absolute error of about 3-5% in this temperature range. The accuracy is however thought to increase with the temperature above a temperature of approximately 1250°C . It is possible to perform a temperature transform of target images with temperatures above 1500°C since the Look-up-table produced for the temperature transform extends to about 3000°C . However, the accuracy is unknown since no calibration or validation experiments within these ranges were performed. The result of the calibration and experiments along with the theoretical assessment within the thesis gave background to the discussion of optimal imaging system for thermographic measurements. In order to receive more accurate temperature measurements, a CCD-sensor is to prefer since producing more uniform images with a more linear and predictable response. This would most likely enable the implementation of the camera setting influence. To receive better color accuracy but mainly to prevent channel overlap a system using three sensors instead of one (as for the current imaging system) is to prefer. This would result in larger freedom of channel choice and thus, the temperature transform can somewhat be customized for the specific measured temperature ranges. A brief discussion concerning the overall choice of camera was also brought up. Since the temperature range is large and the red, green and blue channels are sensitive to temperature changes the demands on the sensor dynamic range will be high in order to receive a linear response, or even a fully predictable response, across the whole temperature range. A suggested option to the RGB-camera, still offering the very simple set up, is a dual-wavelength camera in the near (or medium wavelength) infrared range.
Kartläggning av materialförändringar vid uppvärmning eller nedkylning är av stor betydelse för förståelsen för ett materials strukturella beteende. Denna masteruppsatts syftar till att utforska utsikterna för termisk avbildning av varma material med en RGB-kamera. I detta inkluderas kalibrering av kamera, validerings experiment och teoretiska efterforskningar. Det huvudsakliga motivet för användning av en RGB-kamera är den enkla uppställningen (endast en kamera där de olika färg-lagren är alignerade) och det, i jämförelse med många IR-kameror, låga priset. En metod och en kod som möjliggör termografiska mätningar (både video och stillbild) inom temperaturområdet 800°C till 1500°C har tagits fram där kalibrering av kameran är inkluderat. Efter utförd kalibrering förutspåddes att noggrannheten av mätningarna mest troligt skulle vara bristfälliga i området 1000°C upp till cirka 1200°C.  Denna bristfälliga noggrannheten har sin grund i den icke-linjära (och i vissa fall oregelbundna) sensorresponsen vilket, i huvudsak, försvårade bestämning av exponeringstidens signalinflytande. Med anledning av detta gjordes en kalibrering med fixa inställningar, det vill säga; fixa exponeringstider och bländarinställningar för mätningar inom specifika temperaturområden, men utan korrigering vid förändring av kamerainställningar. Valideringsexperimenten som utfördes var i (eller mycket nära) det temperaturområde där de största temperaturavvikelserna förutspåddes vara.  Utförd validering av metod för temperaturavbildning visade att mätningen med RGB-kameran underskattade temperaturerna med cirka 30-50°C i temperaturområdet mellan 975-1015° motsvarar ett absolut fel på cirka 3-5% inom detta temperaturområde. Det är dock troligt att noggrannheten av mätningarna ökar då temperaturerna av det avbildade objektet är större än 1250°C då man i kalibreringsprocessen kunde se mindre avvikelser i detta område.  Med producerad look-up table (skapad i kalibreringsprocessen) är det möjligt att utföra temperaturtransformationer för avbildningar av objekt som har temperaturer över 1500°C, dock med okända osäkerheter då varken kalibrerings- eller valideringsexperiment har utförts för så pass höga temperaturer.  Resultatet av kalibreringen och experimenten, tillsammans med en teoretisk utredning av begränsningar och möjliga förbättringar vid termografiska mätningar, lade grunden till diskussion gällande optimalt bildsystem. Rekommendationer för att i framtiden utföra mer exakta termografiska mätningar med en RGB-kamera togs fram där en 3-CCD kamera föreslogs för att förbättra mätresultaten.  En CCD sensor är att föredra framför en CMOS sensor då de icke-verkliga pixel-avvikelserna inte är lika kritiska för en CCD-sensor som för en CMOS-sensor. CCD-sensorn är dessutom i många aspekter mer tillförlitlig vid vetenskapliga mätningar och har oftast mer linjär och förutsägbar respons vilket mest troligt skulle möjliggöra inkludering av exponeringstidens signalinflytande.  En kort diskussion gällande val av kanaler (våglängdsområden) som kan användas vid temperaturmätningar tas även upp i avhandlingen. Eftersom temperatur-mätområdet är stort och den röda, gröna och blå kanalen är känsliga för temperaturförändringar (liten förändring av temperatur ger stor förändring i uppmätt emission) så kommer kravet på det dynamiska omfånget av sensorn vara högt.  Ett alternativ till RGB-kameran, som fortfarande har en enkel uppställning, är en dubbel-sensor-kamera med ett dubbelt bandpass-filter i det när-infraröda (NIR) området. Detta kräver dock en utredning för hur sensorer i detta område påverkar den uppmätta signalen.
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Neves, Diego Pereira 1983. "Biomechanics of the feeding process of broiler chicks." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257099.

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Orientador: Irenilza de Alencar Nääs
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on 2018-08-25T10:56:01Z (GMT). No. of bitstreams: 1 Neves_DiegoPereira_D.pdf: 2128104 bytes, checksum: aae1334cdaf344654741c087740bd7c6 (MD5) Previous issue date: 2014
Resumo: Os frangos podem exibir diferentes padrões de movimentos biomecânicos as partes do corpo em relação às características físicas do alimento (tamanho, formato e dureza) durante a alimentação. As limitações anatômicas relacionadas com a idade, sexo e linhagem também podem afetar o processo mecânico de alimentação. Para determinar a importância desses parâmetros, as medidas relacionadas aos movimentos biomecânicos de partes corporais são necessárias. Em particular, a trajetória, dimensões e efeitos temporais relacionados com o bico do frango e com a movimentação da cabeça devem ser considerados. No entanto, determinar esta informação manualmente do vídeo por um operador humano é tedioso e propenso a erros. A presente tese tem como objetivo avaliar o impacto de três tipos distintos de ração sobre a biomecânica da alimentação de frangos de corte. O total de 19 pintos de corte machos foram filmados durante a alimentação aos 3 e 4 dias de idade através de uma câmera de alta velocidade com taxa de aquisição de 250 fps (quadros por segundo). As rações avaliadas foram: farelada fina (F1), farelada grossa (F2) e quebrada (F3), no qual o diâmetro geométrico médio e o desvio padrão geométrico foram 476?m (2.54), 638?m (2.56), e 1243?m (2.43) , respectivamente. O peso e a morfometria do bico (comprimento e largura) foram medidos após as gravações. O deslocamento da cabeça das aves durante as fases `mouthful¿ e `mandibulação¿ e a abertura máxima do bico foram mensurados por de análise computacional de imagem. A fase `mouthful¿ consistiu no movimento da cabeça de forma ininterrupta direção oblíqua ou vertical em direção à ração até que a partícula de alimento fosse capturada. A fase `mandibulação¿ consistiu em um ciclo de abertura e de fechamento do bico, na qual existe uma abertura máxima do bico. Estas fases foram classificadas manualmente como: `mouthful¿ como 'sucedido' ou 'fracassado' e `mandibulações¿ como `catch-and-throw¿ (CT) ou `slide-and-glue¿ (SG). O `mouthful sucedido¿ consistiu quando a ave capturou o alimento com sucesso, e a `mouthful fracassado¿ quando a ave errou a partícula de alimento. `Catch-and-throw¿ consistiu no reposicionamento da partícula na ponta bico antes de iniciar o transporte para o interior da cavidade oral. `Slide-and-glue¿ consistiu na deslocação da língua até a ponta em bico para aderir as partículas de alimento com o auxílio da saliva pegajosa e transportar para o interior da cavidade oral. Os resultados indicaram correlações significativas de fraca intensidade entre o peso, as características morfométricas do bico e as variáveis biomecânicas, bem como correlação entre a abertura máxima do bico e o deslocamento cabeça. O deslocamento da cabeça foi maior no `mouthful sucedido¿ (0,439 mm ± 0,002) em relação ao `mouthful fracassado¿ (0,371 mm ± 0,005). Além disso, o deslocamento da cabeça foi mais expressivo em F3 (0,526 mm ± 0,005), F2 (0,519 mm ± 0,004) e F1 (0,431 mm ± 0,003), respectivamente. O deslocamento da cabeça também foi significativamente maior para CT (0,245 mm ± 0,001) do que SG (0,114 mm ± 0,000). Considerando os diferentes tipos de ração, o deslocamento da cabeça para CT foi maior em F3, F1 e F2, enquanto que para SG foram maiores em F3, F2 e F1, respectivamente. A abertura máxima do bico também foi maior para CT (0,245 mm ± 0,001) do que SG (0,114 mm ± 0,00). Além do mais, para CT foi maior no F3 e F1 que em F2, enquanto que para SG foi maior para F1, F3 e F2, respectivamente. Assim, os diferentes tamanhos das partículas de ração (granulometria) foi, potencialmente, o fator chave para o movimento dos pintos durante a alimentação. Além disso, esta relação não foi proporcional à granulometria, explicada por valores mais elevados em F3 e F1. A ocorrência de `mouthful fracassado¿ foi 18,0% para F3, 11,2% para F2 e 6,6% para a F1. Para a classificação das mandibulações, observou-se a maior frequência de CT em F3 (26,1%), F1 (24,9%) e F2 (17,9%), respectivamente. Esta situação sugere que os pintos capturaram as partículas na ponta bico de maneira mais adequada para a deglutição com a granulometria 638µm (F2) do que 476?m (F1) e 1243µm (F3), explicada pela menor movimentação e necessidade de reposicionamento das partículas de alimento. De forma geral, a tecnologia de câmeras de alta velocidade combinada com análise computacional de imagem adotada neste experimento foi um método eficaz para análise de movimentação. É desejável uma melhor compreensão das limitações mecânicas do aparelho bucal das aves durante a alimentação, a fim de determinar a relação entre os diferentes tipos de alimentos sobre os padrões biomecânicas exibidos pelas aves
Abstract: Broiler chickens may exhibit different biomechanical motions patterns of the body parts in relation to the physical properties of feed (size, shape and hardness) while feeding. The anatomical limitations related to age, gender and breed may also impact the feeding mechanical process. To determine the significance of these parameters, measurements related to the biomechanical motions of body parts are required. In particular, the trajectory, dimensions and temporal effects related to the chicken¿s beak and head movements should be considered. However, determining this information manually from video by a human operator is tedious and prone to errors. The present thesis aims assess the impact of three different feed types on the biomechanics of feeding behaviour of broiler chicks. A total of 19 male broiler chicks were recorded while feeding at 3 and 4-d-old using a high-speed camera with an acquisition rate of 250 fps (frames per second). The feed types considered were: fine mash (F1), coarse mash (F2) and crumbled (F3), in which the geometric mean diameter and the geometric standard deviation were 476µm (2.54), 638µm (2.56), and 1243µm (2.43), respectively. The birds¿ weight and morphometric traits of the beak (length and width) were measured after the recordings. The birds¿ head displacement during mouthful and mandibulation phases and the maximum beak gape were measured through computational image analysis. Mouthful phase consisted an uninterruptedly head movement towards feed in an oblique or vertical direction until the feed particle is grasped. Mandibulation phase consisted in one cycle of opening and closing of the beak, in which there is a maximum beak gape. These phases were manually classified, as follows: mouthfuls as `normal¿ or `fail¿ and mandibulations as catch-and-throw (CT) or slide-and-glue (SG). Normal mouthful was when the bird successfully grasped the feed, and fail mouthful was when the birds missed the feed. Catch-and-throw is when the feed is repositioned within the beak tip before starting the transport into the oral cavity. Slide-and-glue consists in the displacement of the tongue up to the beak tip in order to glue the feed particles with the aid of the sticky saliva and carry inward oral cavity. The results indicated significant correlations of weak intensity between weight, morphometric traits of the beak, and the biomechanical variables, as well as correlation between maximum beak gape and head displacement. The head displacement was higher in a normal mouthful (0.439 mm ± 0.002) than fail mouthful (0.371 mm ± 0.005). Furthermore, head displacement was more expressive in F3 (0.526 mm ± 0.005), F2 (0.519 mm ± 0.004), and F1 (0.431 mm ± 0.003), respectively. The head displacement was also significantly higher for CT technique (0.245 mm ± 0.001) than SG (0.114 mm ± 0.000). Considering the different feed types, head displacement for CT was higher in F3, F1 and F2, while for SG were higher in F3, F2, and F1, respectively. The maximum beak gape was also higher for CT (0.245 mm ±0.001) than SG (0.114 mm ± 0.00). Moreover, for CT it was higher in F3 and F1 than in F2, while for SG was higher for F1, F3 and F2, respectively. Thus, the different size of the feed particles (granulometry) was potentially the key factor for the chicks¿ motion while feeding. Besides, this relation was not proportional to the granulometry, explained by higher values for F3 and F1. The occurrence of `fail mouthful¿ was 18,0% for F3, 11,2% for F2 and 6,6% for F1, respectively. For mandibulations classification, it was observed a higher frequency of CT in F3 (26,1%), F1 (24,9%), and F2 (17,9%). This situation suggests that the chicks grasped the particles in the beak tip more properly for swallowing with the granulometry 638µm (F2) than 476µm (F1), and 1243µm (F3), explained by the less motion and necessity of repositioning the feed particles. Overall, the high-speed camera technology combined with computational image analysis adopted in this experiment was an effective method for motion analysis. It is desirable a better understanding of the mechanical limitations of the birds¿ jaw apparatus while feeding in order to determine the relationship between different types of feed in biomechanical patterns displayed by the birds
Doutorado
Construções Rurais e Ambiencia
Doutor em Engenharia Agrícola
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Canessi, Tomà. "Physical modelling of rock fragmentation upon impact." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Rockfall represents a significant safety hazard in building, civil and mining environment that can cause serious injuries and fatalities and can damage structures, infrastructure and machinery. It is extremely costly to manage and public authorities need reliable tools to study and design protection structures as the performance of the existing structures are variable. Many studies and experiments have been done, but one aspect would lead to a better comprehension of the subject: the fragmentation of blocks upon impact. Rocks commonly break up upon impact but rockfall prediction models currently available mostly ignore this phenomenon, even though fragmentation changes size, shape and energy of falling blocks and can drastically change the outcome of the design of protective structure. For example, if a large rock breaks upon impact and its mass and energy are divided among fragments, a high level of energy is dissipated and ignoring fragmentation would lead on an overdesign of the protection barrier. Moreover, very fast rock fragments may rupture a rockfall protection. The project aims to overcome this limit, studying and considering fragmentation in rockfall model, allowing assessment of the hazard rising from a shattered rock. The intention is to develop a database of experimental data about fragmentation of blocks upon impact by considering the initial conditions that cause fragmentation, the fragment size and mass distribution, the partition of velocity and energy at impact and what may lead to “bullet effect” or high flying fragment. This project aims to include fragmentation in rockfall prediction causes to facilitate a better and safer mitigation of rockfall hazard. Moreover, a better knowledge will directly translate into economical and societal benefits, such as more cost effective and better user experience.
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Lin, Ben-shang, and 林本上. "Using low-cost High-speed cameras of the Baseball Trajectory Reconstruction and Rotation Analysis System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/20027054854548446079.

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碩士
國立臺灣科技大學
電子工程系
100
Baseball is one of the most popular sports in Taiwan. In recent years, there are already many baseball players establish their position as major baseball league starters, such as Chien-Ming Wang, Wei-Yin Chen etc. They have been showing their talent on the U.S. Major League Baseball and helped bringing Taiwan to the international level. In order to promote the development of baseball, we hope to develop a system to help the pitcher improve playing skills. We build system to track the trajectory of the baseball with the sponsor of the National Science Council. In this paper, as well as the determination of baseball trajectory, we hope to further understand baseball’s rotation while flying through the air. It is a very important issue to discuss the rotation of the baseball during its flight, for the baseball will be affected by different rotational angle when the pitcher throws it out, such as fastball, slider ball, curveball etc. We hope our system can further improve the study of pitcher’s effectiveness. On the other hand, the most important decisive call for baseball game is its strike zone. The result will sometimes be affected by the umpire. We hope to increase the accuracy by studying such as baseball trajectory and rotation. In order to reduce the error caused by non-synchronous cameras, we use techniques synchronization source cameras, using wireless SD card to substitute a physical communication line, applying the image processing methods and using high-speed cameras to improve the accuracy of baseball tracking. To verify our method to automatic capture of static baseball sphere rotation, the coordinate points identified by measuring are compared with the points that are computer calculated, thus to check for any difference. This experiment error is approximately 10%. The main reason is because the camera has a certain elevation error and thereby affects its axis. We calculate the optimal solution (rotation matrix) by applying more than one point to further reduce actual error to about 5%.
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CHENG, CHIEH, and 鄭婕. "A Study on Cross-Strait Business Models and Future Opportunities of Scientific High-Speed Cameras." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/96zpt7.

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碩士
世新大學
傳播管理學研究所(含碩專班)
107
High-speed photography technology has been developed for many years. Countries all over the world have studied more profound technologies through scientific high-speed cameras. Due to the rapid economic development, the demand for scientific high-speed cameras is gradually emerging on both sides of the Taiwan Strait. The demand drives the market to change constantly. This study uses in-depth interviews to communicate with experts on the changes in the cross-strait market for scientific high-speed cameras. A case company (Shanghai Jinqiao Jingyi High-tech Co., Ltd.) is also used to understand the business model of this industry and look for future development opportunities. Shanghai Jinqiao has been cultivating in mainland China for 25 years. It is one of the representative enterprises in the industry, acting as an agent for multi-country scientific high-speed cameras and independently producing related accessories. Although the development of the enterprise is small to date, the development space of the agent is limited. This study explores the overall commercial situation of the scientific high-speed camera industry from the perspective of the agent, and comprehensively understands the development and difficulties. Among them, the competing relationship faced by the case companies is also the key point of this study. The competing relationship makes the enterprises in the industry present a state of cooperation and competition. How to survive in the competing relationship becomes an important topic. There are many brands of scientific high-speed cameras. This study takes IDT in the United States and Photron in Japan as examples to analyze their marketing strategies. STP and 4P strategies are used to explore the links between market positioning and marketing layer by layer, and the characteristic products of IDT and Photron are used to explore the management methods. Many researchers have completed scientific experiments with scientific high-speed cameras. Everyone knows the importance and application scope of scientific research high-speed cameras, but they have not thoroughly understood the market of scientific high-speed cameras. Therefore, this study explores the market changes, business models, marketing strategies and competing relationships, and explores the development of scientific research high-speed camera industry through multi-dimensional analysis, hoping to contribute to this industry.
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康秋郎. "An Action Research of Finding Affecting Factors to Improve the Performance of Fifth and Sixth Graders’Group Jump Rope—Applying High Speed Cameras and Motion Capture." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/2gnzuj.

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碩士
建國科技大學
數位媒體設計系暨媒體與遊戲設計研究所
105
After interviewing 19 teachers of 5th and 6th graders, the researcher knew that the biggest challenge for them is insufficiency of professionalism. That is, teachers did not know how to carry out the training. It was the researcher’s hope that through this research, factors that affected the performance of Group Jump Rope were to be found, which could be used as references for teachers who are interested in Group Jump Rope, and also help the promotion of Group Jump Rope in schools. The main purposes of this research were to find out the performance affecting factors that come from rope turners; to find out the performance affecting factors that come from rope jumpers; to find out other performance affecting factors; and to explore what students had gained and been inspired through the process of practicing Group Jump Rope. The Action Research was adopted. Eighteen students of 6th graders from a class of an elementary school in Changhua City, the home room teacher of the class, a PE teacher and a swimming coach of the class took part in this research for one semester. The researcher studied related papers, visited experts of Group Jump Rope, and applied Motion Capture and High Speed Cameras to aid the filming of training processes, and to proceed with analyzing comparison. By continuously teaching and collecting feedbacks to carry on relevant Action Researches, conclusions of this research were reached. Findings of this reseach are as follows: 1. Performance affecting factors that come from rope turners: rope turning frequency by rope turners, rope turning radius by rope turners, the ways how rope turners grip the rope, the ways how rope turners stand, the relation between the two rope turners, and the distance between the two rope turners. 2. Performance affecting factors that come from rope jumpers: the ways of jumping, and stability of rope jumpers. 3. Other factors that affect the performance of Group Jump Rope: texture of the rope, layout configuration of the group, outfits, appearance, and equipment, and mental preparation of the players. 4. The things which students had gained and been inspired through the process of practicing Group Jump Rope: understanding the importance of unity and cooperation, better concentration on doing things, better concentration on school learning, and good comprehension of the essence of being persistent and not giving up.
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Holloway, Jason. "Increasing temporal, structural, and spectral resolution in images using exemplar-based priors." Thesis, 2013. http://hdl.handle.net/1911/71966.

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In the past decade, camera manufacturers have offered smaller form factors, smaller pixel sizes (leading to higher resolution images), and faster processing chips to increase the performance of consumer cameras. However, these conventional approaches have failed to capitalize on the spatio-temporal redundancy inherent in images, nor have they adequately provided a solution for finding $3$D point correspondences for cameras sampling different bands of the visible spectrum. In this thesis, we pose the following question---given the repetitious nature of image patches, and appropriate camera architectures, can statistical models be used to increase temporal, structural, or spectral resolution? While many techniques have been suggested to tackle individual aspects of this question, the proposed solutions either require prohibitively expensive hardware modifications and/or require overly simplistic assumptions about the geometry of the scene. We propose a two-stage solution to facilitate image reconstruction; 1) design a linear camera system that optically encodes scene information and 2) recover full scene information using prior models learned from statistics of natural images. By leveraging the tendency of small regions to repeat throughout an image or video, we are able to learn prior models from patches pulled from exemplar images. The quality of this approach will be demonstrated for two application domains, using low-speed video cameras for high-speed video acquisition and multi-spectral fusion using an array of cameras. We also investigate a conventional approach for finding 3D correspondence that enables a generalized assorted array of cameras to operate in multiple modalities, including multi-spectral, high dynamic range, and polarization imaging of dynamic scenes.
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Books on the topic "High-speed-cameras"

1

Tsuji, Kinko, ed. The Micro-World Observed by Ultra High-Speed Cameras. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-61491-5.

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Rieckoff, T. J. High-speed observer: Automated streak detection in SSME plumes. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 2001.

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International Congress on High Speed Photography and Photonics (17th 1986 Pretoria, South Africa). Proceedings of the 17th International Congress on High Speed Photography and Photonics: 1-5 September 1986, CSIR Conference Centre, Pretoria, Republic of South Africa. Edited by McDowell M. W, Hollingworth D, South African Council for Scientific and Industrial Research., South African Optical Society, South African Institute of Physics., and Society of Photo-optical Instrumentation Engineers. [S.l.]: The Council, 1986.

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Hall, Donald N. B. "Wide field imaging of solar system objects with an 8192 x 8192 CCD mosaic": Final technical report, March 1, 1993 to February 28, 1995. [Washington, D.C: National Aeronautics and Space Administration, 1995.

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Rieckhoff, T. J. High-speed observer: Automated streak detection for the aerospike engine. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 2001.

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George C. Marshall Space Flight Center., ed. High-speed observer: Automated streak detection in SSME plumes. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 2001.

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High-speed observer: Automated streak detection in SSME plumes. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 2001.

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George C. Marshall Space Flight Center., ed. High-speed observer: Automated streak detection in SSME plumes. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 2001.

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9

Tsuji, Kinko. The Micro-World Observed by Ultra High-Speed Cameras: We See What You Don’t See. Springer, 2017.

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Tsuji, Kinko. The Micro-World Observed by Ultra High-Speed Cameras: We See What You Don’t See. Springer, 2018.

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Book chapters on the topic "High-speed-cameras"

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Roberts, J. W., S. D. Rose, S. G. Chamberlain, and G. Maroscher. "High Speed Web Inspection Using Intelligent TDI Cameras." In Applications of Photonic Technology, 275–80. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-9247-8_52.

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Langley, Kenneth R., Er Q. Li, and Sigurdur T. Thoroddsen. "High-Speed Interferometry Under Impacting Drops." In The Micro-World Observed by Ultra High-Speed Cameras, 321–41. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_15.

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Lajoinie, Guillaume, Nico de Jong, and Michel Versluis. "Brandaris Ultra High-Speed Imaging Facility." In The Micro-World Observed by Ultra High-Speed Cameras, 49–77. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_3.

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Etoh, Takeharu G., and Quang A. Nguyen. "Evolution of High-Speed Image Sensors." In The Micro-World Observed by Ultra High-Speed Cameras, 81–101. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_4.

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Lauterborn, Werner, and Thomas Kurz. "The Bubble Challenge for High-Speed Photography." In The Micro-World Observed by Ultra High-Speed Cameras, 19–47. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_2.

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Kuroda, Rihito, and Shigetoshi Sugawa. "Cameras with On-chip Memory CMOS Image Sensors." In The Micro-World Observed by Ultra High-Speed Cameras, 103–24. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_5.

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Kleine, Harald. "High-Speed Imaging of Shock Waves and Their Flow Fields." In The Micro-World Observed by Ultra High-Speed Cameras, 127–55. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_6.

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Tsuji, Kinko. "History of Curiosity." In The Micro-World Observed by Ultra High-Speed Cameras, 3–15. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_1.

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Rack, Alexander, Margie Olbinado, Mario Scheel, Benjamin Jodar, and John Morse. "Real-Time Hard X-ray Imaging." In The Micro-World Observed by Ultra High-Speed Cameras, 227–37. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_10.

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Aldén, Marcus, and Mattias Richter. "Development and Application of High-Speed Laser Visualization Techniques in Combustion Research." In The Micro-World Observed by Ultra High-Speed Cameras, 241–59. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61491-5_11.

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Conference papers on the topic "High-speed-cameras"

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Harvey, John, Christoph U. Keller, Lonnie Cole, Roy Tucker, and David Jaksha. "High-speed cameras and solar observing." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by Silvano Fineschi and Mark A. Gummin. SPIE, 2004. http://dx.doi.org/10.1117/12.506164.

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Belova, M. P., V. I. Vlasov, N. A. Dranovsky, S. V. Karasyov, I. V. Kozhukhov, L. L. Kripinevich, N. M. Model, et al. "New high-speed cameras from Russia." In 20th International Congress on High Speed Photography and Photonics, edited by John M. Dewey and Roberto G. Racca. SPIE, 1993. http://dx.doi.org/10.1117/12.145743.

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Trofimenko, Vladimir V., V. P. Klimashin, and Yu A. Drozhbin. "High-speed shutter for mirror cameras." In Twenty-Third International Congress on High-Speed Photography and Photonics, edited by Valentina P. Degtyareva, Mikhail A. Monastyrski, Mikhail Y. Schelev, and Alexander V. Smirnov. SPIE, 1999. http://dx.doi.org/10.1117/12.350468.

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Etoh, Takeharu G., Kohsei Takehara, Tomoo Okinaka, Yasuhide Takano, Arno Ruckelshausen, and Dirk Poggemann. "Development of high-speed video cameras." In 24th International Congress on High-Speed Photography and Photonics, edited by Kazuyoshi Takayama, Tsutomo Saito, Harald Kleine, and Eugene V. Timofeev. SPIE, 2001. http://dx.doi.org/10.1117/12.424295.

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Brixner, Berlyn. "High-speed cameras at Los Alamos." In 22nd Int'l Congress on High-Speed Photography and Photonics, edited by Dennis L. Paisley and ALan M. Frank. SPIE, 1997. http://dx.doi.org/10.1117/12.273429.

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Germer, R. "High Speed Video Techniques With Ccd-Cameras." In 17th Int'l Conference on High Speed Photography and Photonics, edited by Donald Hollingworth and Maurice W. McDowell. SPIE, 1987. http://dx.doi.org/10.1117/12.975587.

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Honour, J., and R. Had land. "Cinemax Image Intensifier For High Speed Cameras." In 31st Annual Technical Symposium, edited by Howard C. Johnson. SPIE, 1988. http://dx.doi.org/10.1117/12.942250.

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Doherty, Peter E., and Doug W. Donaghue. "High-speed precision slow-scan CCD cameras." In IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, edited by Helen Marz and Robert L. Nielsen. SPIE, 1993. http://dx.doi.org/10.1117/12.144797.

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Kim, Jongsung, and Myunggyu Kim. "Motion capture with high-speed RGB-D cameras." In 2014 International Conference on Information and Communication Technology Convergence (ICTC). IEEE, 2014. http://dx.doi.org/10.1109/ictc.2014.6983165.

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Noda, Akihito, Yuji Yamakawa, and Masatoshi Ishikawa. "High-speed object tracking across multiple networked cameras." In 2013 IEEE/SICE International Symposium on System Integration (SII). IEEE, 2013. http://dx.doi.org/10.1109/sii.2013.6776743.

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Reports on the topic "High-speed-cameras"

1

Manin, Julien. Performance testing of the iX Cameras iSpeed 727 high-speed camera. Office of Scientific and Technical Information (OSTI), April 2021. http://dx.doi.org/10.2172/1777099.

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Yu, Jian H., and Peter G. Dehmer. Dynamic Impact Deformation Analysis Using High-speed Cameras and ARAMIS Photogrammetry Software. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada537764.

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