Relevant bibliographies by topics / Image grabber

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Image grabber'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Image grabber"

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Brown, Richard S. "An Inexpensive Frame Grabber for the Microscopist." Microscopy Today 4, no. 5 (June 1996): 16–17. http://dx.doi.org/10.1017/s1551929500068954.

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Having shopped for an inexpensive but powerful digital imaging system for the last four years, I have finally found a device that will satisfy even the most frugal budget. The Snappy Video Snapshot by Play, Incl, is a 24-bit true color frame grabber that plugs into your PC printer port. After plugging the Snappy device into your printer port (Figure 1) and spending approximately six minutes loading the Snappy software provided, you can connect a color or black and white camera, VCR, or television set and capture your first digital image. Because the device plugs into a printer port, it is completely portable. A switch box is needed if you will be changing between digital image acquisition and printing tasks frequently.
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Bragantini, Jordão, Bruno Moura, Alexandre X. Falcão, and Fábio A. M. Cappabianco. "Grabber: A tool to improve convergence in interactive image segmentation." Pattern Recognition Letters 140 (December 2020): 267–73. http://dx.doi.org/10.1016/j.patrec.2020.10.012.

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Jiang, Wei. "The Application of Image Recognition Based on BP Neural Networks in Automatic Steel Rolling." Advanced Materials Research 764 (September 2013): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amr.764.161.

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A BP neural networks is presented for billet character recognition. Firstly, by a series of image processing techniques, the character’feature in the billet character region of the video image gathered by frame grabber is abstracted. Secondly, the BP neural networks algorithm is employed for character recognition. Application results show that the image recognition based BP neural networks can performs well in billet character recognition, and the method presented is speedy, efficient and of high value in practice.
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Purwanti, Indri, Gede Bayu Suparta, and Maesadji Tjokronagoro. "DIGITISASI DAN PRINT-OUT CITRA RADIOGRAFI KARSINOMA NASOFARING." JOURNAL ONLINE OF PHYSICS 2, no. 1 (December 28, 2016): 23–26. http://dx.doi.org/10.22437/jop.v2i1.3451.

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Telah dilakukan penelitian tentang proses digitisasi dan print-out citra radiografi karsinoma nasofaring luaran suatu perangkat simulator di RS. DR.Sardjito. Proses digitisasi dilakukan menggunakan sistem frame grabber yang dikembangkan oleh Laboratorium Fisika Citra FMIPA UGM yang terhubung dengan sistem radiografi fluoroskopi. Setelah diperoleh 20 citra untuk sekali proses paparan radiasi, dilakukan proses normalisasi dan proses kalkulasi citra. Proses analisis terhadap citra hasil meliputi analisis visual, histogram, dan profil garis yang dilakukan menggunakan software New Image Analyzer 2007. Untuk kepentingan dokumentasi permanen, citra di-print-out. Berdasarkan penelitian ini, operasi add dapat memberikan kualitas visual citra terbaik, sebagaimana tampak di layar monitor maupun setelah di-print-out. Kualitas citra hasil print-out relatif tetap sepanjang spesifikasi printer yang digunakan sesuai. Kata kunci: Digitisasi, Print-out, Frame Grabber, Radiografi Fluoroskopi, Karsinoma Nasofaring
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Magdaleno, Eduardo, Manuel Rodríguez Valido, David Hernández, María Balaguer, Basilio Ruiz Cobo, and David Díaz. "FPGA Implementation of Image Ordering and Packing Algorithm for TuMag Camera." Electronics 10, no. 14 (July 16, 2021): 1706. http://dx.doi.org/10.3390/electronics10141706.

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The TuMag instrument is a Tunable Magnetograph that has been designed to measure the magnetic field of the sun. This instrument and others will be connected to a telescope that will be sent into the stratosphere using a balloon for an uninterrupted observation of the sun for four days in the summer of 2022. The TuMag camera is a new development for implementing the image detector of the instrument. It is based on the GPIXEL GSENSE400-BSI scientific CMOS image sensor and an FPGA device in charge of controlling the image sensor, configuring it and grabbing images. FPGA device consists of an array of Configurable Logic Blocks. However, the sensor does not supply the image data in a row-by-column format. This task has to be done in the FPGA that controls the sensor because the frame grabber has a significant workload with the control of all the instruments, the telescope, the refrigeration, the navigation, and so on. This work describes the FPGA implementation of Image Ordering and Packing algorithm for TuMag Camera concerning the real-time ordering of the images before grabbing and sending to the Data Processing Unit.
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Pronin, S. V., V. B. Makulov, A. K. Harauzov, A. V. Chihman, V. N. Chihman, and Y. E. Shelepin. "Tools for Investigating the Perception of Natural Scenes." Perception 26, no. 1_suppl (August 1997): 316. http://dx.doi.org/10.1068/v970283.

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Research on the perception of complex half-tone images and images of natural scenes requires accurate quantitative control of the characteristics of the stimuli. The tools consist of the hardware and the software for stimulation and processing. Our hardware for stimulation includes a CCD, an IBM PC with implementing Frame Grabber, the display, and a device for photometric control. We present programs for image processing allowing control of the brightness scale, reformation, changing the number of discretisation levels, addition and subtraction, programs for convolution operations including frequency filtration approximations, the means of different methods, programs for generation of test images and for generation of noise added to these, and programs for measuring statistical and geometrical characteristics of images. We also present software for use in electrophysiological experiments.
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Clancy, John P. "Digital image analysis: the quantitative measurement of nanometer features." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 548–49. http://dx.doi.org/10.1017/s0424820100087057.

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An important goal of transmission electron microscopy (TEM) is the quantitative measurement of nanometer features. With digital analysis techniques, image features can be accurately measured in discrete pixels, but a scaling factor is needed to convert pixel units into real space units (e.g. angstroms in the case of an electron micrograph). For high-resolution TEM, fringe spacings are often used to obtain a scaling factor. In particular, the 111 cross-fringe pattern recorded at the 011 zone axis is the most common situation for electronic materials studies. However when variations in defocus and thickness are considered, the 011 high-resolution image (i.e. ∼ 2Å lattice) is quite complex. This complexity motivated a theoretical study which defines an optimum methodology for achieving scaling factors from digitized ultra-high resolution images (e.g. via a frame grabber). The results indicate that the preferred digital approach which has the least ambiguity and possibly the highest accuracy is achieved under 3-beam systematic imaging conditions.
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Dorset, Douglas L., Sophie Kopp, John R. Fryer, William F. Tivol, and James N. Turner. "Phase refinement of copper perchlorophthalocyanine from a 0.23 nm-resolution electron micrograph using the Sayre equation." Proceedings, annual meeting, Electron Microscopy Society of America 52 (1994): 100–101. http://dx.doi.org/10.1017/s0424820100168232.

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The use of direct methods of phasing for electron diffraction (ED) presents opportunities which cannot be matched with x-ray diffraction. High-resolution lattice images of thin crystals obtained on the electron microscope can provide crystallographic phases after image averaging and correction for the contrast transfer function--a procedure which has no analog for x-rays. This procedure has been used for protein crystallography, where such images are often the primary source for phase information.The method has also been used in the analysis of organic molecules.A high resolution (0.23 nm) electron microscope image of epitaxially oriented copper perchlorophthalocyanine obtained at 500 kV (Fig. 1) was used to provide a basis set of 39 phases for refinement in conjunction with a set of ED amplitudes obtained at 1200 kV (Fig 2). Portions of the image were digitized with a CCD camera and a frame-grabber and analyzed using the CRISP software package. The ED pattern was scanned using a Joyce-Loebl Mk. IIIC flatbed microdensitometer to produce integrated intensities, to which no Lorenz correction was applied.
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Doering, John C., and Michael P. Morris. "River Ice Engineering / Ingénierie des glaces fluvialesA digital image processing system to characterize frazil ice." Canadian Journal of Civil Engineering 30, no. 1 (February 1, 2003): 1–10. http://dx.doi.org/10.1139/l02-028.

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The detection, measurement, and characterization of frazil ice particles is a necessary first step in advancing our understanding of frazil ice processes as well as improving models. The detection of frazil ice has been accomplished in a number of ways. Herein, a digital image processing system to characterize frazil in a laboratory environment is described. The system is part of an ice research facility that uses a counter-rotating flume to generate frazil ice. Frazil ice is detected using a cross-polarized light technique. The system acquires digital gray-scale images of frazil ice that are analyzed and manipulated digitally to elucidate the temporal and spatial variation of frazil ice characteristics. For example, the system can be readily used to determine the size distribution of frazil ice particles, the vertical distribution of frazil, or the concentration of frazil ice.Key words: frazil ice characterization, progressive scan camera, frame grabber, digital image, gray scale, processing system, pixel, binary image.
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Wen, Chih Chin, and Shi Wei Lin. "2-Phase Precision Alignment Visual Feedback Control System." Applied Mechanics and Materials 764-765 (May 2015): 587–91. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.587.

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This paper introduces an alignment method using machine vision feedback control method. A panel is placed on a XXY table and its posture is inspected by image sensors with a frame grabber. The alignment of the panel is corrected by adjusting its positions until the amount of misalignment converges into a small tolerance error. Two-phase control process is also derived with this image acquisition design. Applying this proposed control method, long distance moving requirement and better alignment precision performance request can be also guaranteed. Experimental results are shown to demonstrate the feasibility of this alignment control system.
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Dissertations / Theses on the topic "Image grabber"

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Stodart, NP. "The development of a video frame grabber for a PC." Thesis, Cape Technikon, 1993. http://hdl.handle.net/20.500.11838/1159.

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Thesis (Masters Diploma (Electrical Engineering)--Cape Technikon, Cape Town, 1993
This thesis describes the design and development of a computer vision system. The system (Video Frame Grabber) will give PCUsers the potential to capture any visual image into the memory of a computer. This computer intelligible image opens the way for new development in computer photography, Image recognition and . Desktop Publishing.
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Honec, Peter. "Spolehlivé systémy zpracování obrazu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233467.

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The Doctoral thesis demonstrates the design of reliable industrial visual systems. The special emphasis is dedicated to the detection of defects on webs in industrial applications based on line-scan cameras. This system makes possible detection and classification of defects originating during the real production conditions. This work covers a theoretical study of a visual system for the defect detection on endless bands as well as of appropriate lighting and the scene arrangement. Further to that have been selected, adjusted and designed key components of hardware. Following the design and optimization of algorithms a system prototype had been installed on non-woven textiles production line. Eight visual systems implemented into real-life industrial conditions based on this prototype
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Rogers, Jedediah S. "Land Grabbers, Toadstool Worshippers, and the Sagebrush Rebellion in Utah, 1979-1981." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd954.pdf.

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South, John V. "Investigating the margins of Pleistocene lake deposits with high-resolution seismic reflection in Pilot Valley, Utah." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2648.pdf.

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Sharma, Harshita [Verfasser], Olaf [Akademischer Betreuer] Hellwich, Olaf [Gutachter] Hellwich, Niels [Gutachter] Grabe, and Peter [Gutachter] Hufnagl. "Medical image analysis of gastric cancer in digital histopathology: methods, applications and challenges / Harshita Sharma ; Gutachter: Olaf Hellwich, Niels Grabe, Peter Hufnagl ; Betreuer: Olaf Hellwich." Berlin : Technische Universität Berlin, 2017. http://d-nb.info/1156180163/34.

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BINELLI, CHAHINE MARIANNE. "Etude de la fracturation a differentes echelles par images spatiales et photographies aeriennes : exemples du graben de la wei he (chine du nord) et du causse du larzac (france)." Paris 11, 1993. http://www.theses.fr/1993PA112495.

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Les images spatiales et photographies aeriennes permettent une excellente observation de la fracturation. L'analyse structurale de deux regions a ete realisee par teledetection pour etudier le reseau de failles et les deformations recentes du graben de la wei he en chine du nord, ainsi que les reseaux de fractures du causse du larzac (france) a differentes echelles. Le fosse cenozoique de la wei he est limite au sud par les failles bordieres de la chaine des qin ling, sur lesquelles se produit un mouvement d'effondrement ainsi qu'un deplacement horizontal senestre. L'analyse et le traitement d'images landsat et spot ont permis de cartographier precisement le reseau de failles. L'analyse morphostucturale detaillee de ces failles a partir des images spot a permis de mettre en evidence la predominance des mouvements verticaux en bordure du graben et l'existence de decrochements senestres dans la chaine des qin ling, recoupant des reseaux hydrographiques et les courbant systematiquement sur 900 metres environ. Le causse du larzac, situe en bordure du faisceau de failles des cevennes est affecte par quelques unes de ces grandes failles et surtout par un intense reseau de diaclases. Ces differents reseaux ont ete etudies et compares a des echelles variables (de l'image landsat au terrain, en passant par les photographies aeriennes). La complexite de ces reseaux a ete quantifiee par analyse fractale. Ces deux exemples, dont les objectifs differaient, ainsi que les modes d'analyse, soulignent l'influence de l'echelle d'observation sur l'analyse des reseaux.
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Vidal, Jeanne. "Altérations hydrothermales associées aux zones de fractures à l'interface de la couverture sédimentaire et du socle cristallin dans le Fossé rhénan supérieur : application aux forages géothermiques de Rittershoffen (Alsace, France)." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAH008/document.

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La connaissance des réseaux de fractures est essentielle pour comprendre la circulation des fluides dans un réservoir. Cette thèse s’appuie sur la reconnaissance du réseau de fractures naturelles qui chenalisent les circulations à l’échelle des deux forages profonds GRT-1 et GRT-2 de Rittershoffen (Alsace, France) qui ont recoupé les sédiments gréseux triasiques et le socle granitique altéré dans le cadre d’un projet industriel de géothermie. L’étude structurale de ce réseau de fractures a été réalisée à partir d’imageries de paroi acoustiques corrélées à des diagraphies géophysiques standard tandis que l’étude pétro-minéralogique se base sur les échantillons de cuttings. Les zones de fractures perméables des puits de Rittershoffen montrent une organisation asymétrique de la perméabilité. Des fractures ouvertes à l’échelle du puits semblent agir comme des drains perméables entourés de halos d’altération hydrothermale. Ces zones de fractures sont associées à des perturbations locales du profil de température dans le puits. La présence de minéraux illitiques hétérogènes pourrait être un indicateur pour prospecter les zones de circulations actuelles et passées à l’échelle des puits. Cette étude géologique permet d’évoluer vers un modèle de forage hydrothermal possédant des connexions favorables avec le réservoir sans avoir recours à des opérations de stimulation
The knowledge of the fracture network is a key challenge to understand the fluid circulation through a reservoir. The aim of this PhD project is to investigate the natural fracture network that channelized the hydrothermal circulations into two deep wells GRT-1 and GRT-2 at Rittershoffen (Alsace, France) that intersect Triassic sandstones and altered granitic basement in the framework of an industrial geothermal project. The structural study of the fracture network was based on acoustic image logs correlated with standard geophysical logs, whereas the mineralogical study was based on cutting samples. Permeable fracture zones of wells at Rittershoffen present an asymmetrical organization of permeability. Open fractures at the borehole scale act as fluid pathways surrounded by halos of hydrothermal alteration. These fracture zones are associated with local thermal anomalies in the temperature profiles at the borehole scale. Occurrences of heterogeneous illitic minerals could be a good indicator to prospect zones of actual and past circulations at the borehole scale
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鍾雲輝. "Design and implementation of an image grabber." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/05471045872760588960.

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Huang, Chih-Feng, and 黃志峰. "A simplified image grabber with real-time image processing functions." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/19778938798889896916.

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碩士
國立成功大學
電機工程研究所
83
The real-time image processing systems have been used in industrial application for a long time. Most of these systems can process the pictures of low resolution and fewer gray levels and lack general purpose operation interface. So our lab is developing a low cost real-tome image processing system with 512*512 resolution and 256 gray levels. This system will include three parts : (1)Image monitor(2)DSP module(3)IBM PC. In this paper, we describe the design and testing of the image monitor which process the following special purpose functions : (1) The image signal is mixed with the VGA signals to let the user see the image at the real-time mode. (2)We use the memory for grabbing the frame as the work space to process image signal, and adopt SRAM to program the areas to save image and let the user see several images in the work space of the window. (3)The several programmable output LUT (look up tables) can process several images in the window simultaneously. It makes the user possible to select some LUT to process the image at the real time mode. (4)We design some dialogs and menus in the window for the users to use this system more easily.
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Tzuo, How-Jeng, and 左浩仁. "An Improved 4 Channel Real-Time Digital Video Recorder for Surveillance Applications: Automobile Plate Recognition & Video Multiplexer/De-multiplexer/Image Grabber Design and Simulation." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/76649625279406123326.

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碩士
國立清華大學
電機工程學系
93
Digital Video Recorder (DVR) system has found many applications nowadays. Besides traditional long hour and high resolution recordings, some special functions such as fast and intelligent retrieving, pattern recognition, etc., are expected of modern DVR. In this study, our goal is to design a multi-channel DVR system with automatic automobile plate recognition capability for use in a parking station surveillance and management environment. We focus our research on two main parts: hardware design of video Mux (multiplexer)/DeMux (demultiplexer) and image capture circuits used in the multi-channel DVR system, and software design of automobile plate recognition. The Mux and DeMux circuits can merge multi-channel digital video signal into one channel and split one channel into multi-channel digital video signals, respectively. The image capture hardware can capture image data of one frame and send it to DSP for further processing. All these three functions are designed and implemented in an FPGA chip. For the automobile plate recognition, we develop a simple software program that contains an image enhancement, an automobile plate ROI grab, and a characters recognition module to extract and identify the plate number in captured auto image. These functions can be easily augmented with other control functions to tailor the DVR system for various application purposes.
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Book chapters on the topic "Image grabber"

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Moon, Cheol-Hong, and Sung-Oh Kim. "An SoC System for the Image Grabber Capable of 2D Scanning." In Lecture Notes in Computer Science, 894–903. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11881223_114.

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Lu, Lu, Jiong Yang, Jie Liang, and Aimei Zhang. "3D Reconstruction of Grabbed Objects Using a Single Image Based on Palletizing Task." In Advances in Intelligent Systems and Computing, 518–29. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63403-2_46.

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Place, Joachim, M. Diraison, Y. Géraud, and Hemin A. Koyi. "Horst Inversion Within a Décollement Zone During Extension Upper Rhine Graben, France." In Atlas of Structural Geological Interpretation from Seismic Images, 47–49. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119158332.ch7.

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Place, Joachim, and Charles Naville. "Interpretation of a Vertical Seismic Profile Diffraction Occurring at a Basement-Sedimentary Cover Interface in the Rhine Graben, France." In Atlas of Structural Geological Interpretation from Seismic Images, 51–53. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119158332.ch8.

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Jago, Robert. "The gypsy’s lot: myth and reality." In Law in Popular Belief. Manchester University Press, 2017. http://dx.doi.org/10.7228/manchester/9780719097836.003.0011.

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This chapter focuses on the lived experiences of gypsies (collectively referred to as gypsies rather than Roma or travellers). The author argues that the relationship between the legal system and the specific lifestyle of this group is itself causing many tensions which cannot be separated from the long-held myths about gypsies. Jago shows how the standing of gypsies in the UK legal system has, in turn, become the object of various myths. He demonstrates how judgements by the European Court of Human Rights in favour of gypsy claims created in many an image of the law being always on the side of the gypsy. A perception which Jago demonstrates is far from true. After addressing the nature and role of myths in general the author illustrates the tension between positive, romanticised myths about the freedom of gypsy lifestyle and three derogatory myths, namely gypsies as "child-snatchers", as thieves and as "land grabbers". Jago illustrates that these myths are linked to deep-rooted beliefs around property and its ownership.
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Colopy, Cheryl. "The Shrinking Third Pole." In Dirty, Sacred Rivers. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199845019.003.0012.

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Dig Tsho is another glacial lake high in the Himalaya of Nepal. On a summer afternoon in 1985, the lake’s waters burst from their bowl of ice and rock. An inland tsunami flooded the valleys below, sweeping away potato fields, yaks, and a hydropower plant. It was a Buddhist festival day in the Sherpa village of Thamo. Thamo’s residents are descendants of families that five hundred years ago came over the mountains from nearby Tibet to settle the region known as the Khumbu, below what Westerners call Mt. Everest. People were drinking chang, laughing and having fun. At four o’clock in the afternoon one woman, standing on a ridge above the Bhote Koshi, heard a sound like the roar of an airplane, then felt the ground begin to shake. The woman yelled to the other villagers, who came down to see a wall of water approaching from upriver. Those who lived on the slope closest to the river ran into their houses, grabbed religious items—portraits of monks, statues from family chapels, and Buddhist texts—along with leather trunks holding money and family jewelry. Some ran uphill to neighbors’ houses and waited, while others carried images of Buddhist deities down to the riverbank and pointed them at the advancing flood, pleading for the river to change its course. Elderly men and women in Thamo and nearby villages believe they know what caused the flood. They say a Sherpa man was tending his yaks in the high, sparse pastures near Dig Tsho that August. The morning of the flood, a stray dog ate his bowl of curd. The herder was so angry he grabbed the dog, tied its legs so it couldn’t swim, and threw it into the lake. The act of cruelty angered a local deity, who caused a big chunk of the glacier to break off and fall into the lake. The water surged out. There were no human casualties in the Sherpa villages high in the Khumbu, but lower down the channel, along the Dudh Koshi, people drowned in the churning river.
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Conference papers on the topic "Image grabber"

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Liu, Yu-Wei, Hsiang-Yu Hsieh, and Nanming Chen. "High-Speed Frame Grabber for Track Monitoring Systems." In 2011 Joint Rail Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/jrc2011-56116.

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In recent years, image recognition, along with improvements in image processing technology, has become a mainstream method of object inspection. The quality of images directly affects the image-recognition rate. Track monitoring systems play an important role in ensuring safety and preventing derailments of trains, on the basis of the prevailing track conditions. Therefore, the conditions of track systems are very important. In this research, a high-speed frame grabber system is designed. The triggering rate of its line scan camera can be adjusted to match the vehicle speed of the train, so that the pixels per inch of images captured by this camera are fixed. The hardware equipment of the designed system includes a line scan camera, an image acquisition card, artificial lightings, a contrast sensor, and a system on a programmable chip (SOPC) development board. An exposure time control system is designed on the basis of a field-programmable gate array (FPGA) core. The designed system can acquire clear high-speed images while the vehicle speed changes dramatically. The experimental results confirm the feasibility of using line scan cameras for railway vehicles.
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Dae Ro Lee, Sang-Won Lee, and Jae Wook Jeon. "Frame grabber circuit for IEEE1394 image transfer." In 2007 International Conference on Control, Automation and Systems. IEEE, 2007. http://dx.doi.org/10.1109/iccas.2007.4406747.

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Michalak, Mateusz, Przemyslaw Sekalski, Kamil Grabowski, and Sebastian Izydorczyk. "Fast FPGA-based frame grabber for digital progressive scan image sensors." In 2014 21st International Conference "Mixed Design of Integrated Circuits & Systems" (MIXDES). IEEE, 2014. http://dx.doi.org/10.1109/mixdes.2014.6872258.

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Labastida, Ignasi Juan I., Arturo Carnicer, Estela Martin-Badosa, Santiago Vallmitjana, and Ignacio P. Juvells. "Multiple-image control with an 8-bit frame grabber: use in a Vander Lugt correlator." In Optics in Computing '98, edited by Pierre H. Chavel, David A. B. Miller, and Hugo Thienpont. SPIE, 1998. http://dx.doi.org/10.1117/12.308918.

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Weng, Shiuh-Ku, and Yen-Ju Lin. "Achieving Fast Boot Time and Efficient I/O Multiplexing for Image Grabber in Embedded Linux System." In 2018 International Symposium on Computer, Consumer and Control (IS3C). IEEE, 2018. http://dx.doi.org/10.1109/is3c.2018.00047.

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Solberg, Ole Vegard, Geir-Arne Tangen, Frank Lindseth, Torleif Sandnes, Andinet A. Enquobahrie, Luis Ibáñez, Patrick Cheng, David Gobbi, and Kevin Cleary. "Integration of a real-time video grabber component with the open source image-guided surgery toolkit IGSTK." In Medical Imaging, edited by Katherine P. Andriole and Khan M. Siddiqui. SPIE, 2008. http://dx.doi.org/10.1117/12.772491.

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7

De Vita, A., L. Di Angelo, and L. Allocca. "Early-Injection and Time-Resolved Evolution of a Spray for GDI Engines." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31165.

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An extensive experimental study on sprays from an injector for gasoline direct injection (GDI) engines has been performed. Spatial and temporal evolution measurements of a large cone-angle jet, emerging from a high pressure swirled injector, have been carried out in an optically accessible vessel. The spray has been lightened, both along the spray axis and in cross sections perpendicular to it, by a 532 nm Nd-YAG pulsed laser sheet, 80 mm thickness and 12 ns duration. The scattered light has been collected at 90° with respect to the sheet direction by a digital CCD camera with a frame grabber synchronized with the injection command and the laser pulse. A digital delay system has provided a fine temporal shift (up to microseconds range) of the images acquisition with respect to the start of the injection (SOI). Finally, a digital image processing system has provided analysing the images collected by the CCD camera. The emerging spray has been acquired with three spatial scales, providing both the global and local spray behaviour, and with a detailed temporal resolution to characterize the early stage of the jet formation. The initial phase of the spray is characterized by a strong axial component of the velocity with respect to the radial one, resulting in a pre-spray or slug phase. It produces a cylindrical shape of the jet with the characteristic mushroom shape. Large droplets with high momentum are produced, travelling downstream in advance to the main spray. At later time the radial velocity component controls the process and it gives up to the classical hollow-cone shape with a strong interaction with the gas in the vessel. The images give evidence in time of the collapse of the hollow-cone structure hence resulting in a full cone spray. This behaviour is confirmed by the cross section measurements through the spray, carried out in the range 10–40 mm from the nozzle tip. These measurements make evidence of the refilling of the cone with the presence of strong vortexes on the boundary of the jet. The effects of the fuel injection pressure, injection duration and air-flow field interaction on the structure and evolution of the spray have been studied in details. The digital image processing system also has allowed to reconstruct the spray profile and to determine a refilling index.
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Ainsworth, Roger W., and Steven J. Thorpe. "The Development of a Doppler Global Velocimeter for Transonic Turbine Applications." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-146.

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The development of a Doppler Global Velocimeter (DGV) for the measurement of transonic turbo-machinery flows in the Oxford Isentropic Light Piston Tunnel rotor facility is described. A novel optical arrangement for capturing both reference and iodine cell discriminated images with a single CCD camera and frame grabber is presented. Practical arrangements for determination of the iodine cell transmission properties as a function of temperature and light frequency are discussed in the context of using an argon ion continuous wave laser for illumination. Flow seeding aspects of the experiment are described with particular emphasis on particle dynamics and light scattering. Error bounds for the DGV measurements are assessed and quantified in respect to the frame grabber resolution and Gaussian beam profile. Results of measurements of the velocity of a rotating disc with tip speed of nominally 90 m/s, obtained with 0.5 W single mode argon ion laser illumination are presented. Practical aspects for employing the DGV on the established Oxford rotor facility, such as seeding of the flow, optical access and synchronisation of data acquisition are addressed.
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Hann, Christopher E., J. Geoffrey Chase, Crispen Berg, Richard G. Brown, Rodney B. Elliott, and XiaoQi Chen. "Specialised Image Capture Systems for a DIET Breast Cancer Screening System." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34261.

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Digital Image-based Elasto-Tomography (DIET) is an emerging technology for non-invasive breast cancer screening. This technology actuates breast tissue and measures the surface motion using digital imaging technology. The internal distribution of stiffness is then reconstructed using Boundary Element or Finite Element Methods (FEM or BEM). However, obtaining accurate imaging at high frequency and high resolution in terms of numbers of pixels is challenging if enough accuracy is to be obtained in the motion sensing to deliver a useful result. The overall focus of such mechatronic and digitally centred systems is on providing a low-cost, radiation dose-free and portable screening system capable of screening numerous patients per day — in direct contrast to current low throughput, non-portable and high cost x-ray and MRI based approaches. Thus, DIET technology relies on obtaining high resolution images of a breasts surface under high frequency actuation, typically in the range of 50–100Hz. Off-the-shelf digital cameras and imaging elements are unable to capture images directly at these speeds. A method is presented for obtaining the required high speed image capture at a resolution of 1280×1024 pixels and actuation frequency of 100Hz. The prototype apparatus presented uses two imaging sensors in combination with frame grabbers and a dSpace™ control system, to produce an automated image capture system. The system integrates a precision controlled strobe lighting system to selectively capture sinusoids at different points in the sinusoidal cycle of response. The final working system produced images that enabled effective 3D motion tracking of the surface of a silicon phantom actuated at 100Hz. The surface of the phantom was strobed at pre-selected phases from 0 to 360 degrees, and an image was captured for each phase. The times at which image capture occurred were calculated for a phase lag increment of 10 degrees resulting in an image effectively every 0.00028s for the actuator cycle of 0.01s. The comparison of the actual trigger times and pre-selected ideal trigger times gave a mean absolute error of 1.4%, thus demonstrating the accuracy of the final system. Final validation is performed using this system to track motion in a silicon gel phantom. The motion is tracked accurately using a novel Euclidean Invariant signature method. Both cameras delivered similar results with over 90% of points tracked to within 1–2%. This level of accuracy confirms the ability to effectively accurately reconstruct the stiffness as validated in other related studies.
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Mori, Giulio, Sandro Razore, Marina Ubaldi, and Pietro Zunino. "Integrated Experimental and Numerical Approach for Fuel-Air Mixing Prediction in a Heavy-Duty Gas Turbine LP Burner." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0122.

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An integrated experimental-numerical procedure has been developed for fuel-air mixing prediction in a heavy-duty gas turbine burner. Optical measurements of the degree of mixing have been performed in a full-scale test rig operating with cold flow. Experimental data have been utilized to validate a CFD RANS numerical model. In fact, it is recognized that the turbulence behavior of jets in swirling air-flow stream is not accurately described by standard k-ε turbulence models; therefore advanced turbulence models have been assessed by means of experimental data. The degree of mixing between simulated fuel and air streams has been evaluated at the burner exit section by means of a planar Mie scattering technique. The experimental apparatus consists of a pulsed Nd:YAG laser and a high resolution CCD video camera connected to a frame grabber. The acquired instantaneous images have been processed through specific procedures that also take into account the laser beam spatial non-uniformity. A second order discretization scheme with a RSM turbulence model gives the best accordance with the experimental data. Such CFD model will be part of a more general method addressed to numerical prediction of turbulent combustion flames in LP technology.
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