Relevant bibliographies by topics / Image quality improvement / Dissertations / Theses
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Dissertations / Theses on the topic 'Image quality improvement'

Author: Grafiati
Published: 3 June 2025
Last updated: 1 August 2025

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1

Saroso, Dana Santoso. "Product quality improvement : a system approach /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17433.pdf.

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Strong, Andrew J. "Development of a Quality Improvement Method for International Manufacturing." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2337.pdf.

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3

Darmadi, Steve. "Strobed IR Illumination for Image Quality Improvement in Surveillance Cameras." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235632.

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Infrared (IR) illumination is commonly found in a surveillance camera to improve night-time recording quality. However, the limited available power from Power over Ethernet (PoE) connection in networkenabled cameras restricts the possibilities of increasing image quality by allocating more power to the illumination system.The thesis explored an alternative way to improve the image quality by using strobed IR illumination. Different strobing methods will be discussed in relation to the rolling shutter timing commonly used in CMOS sensors. The method that benefits the evaluation scenario the mos
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Rajbhandari, Beryl. "The role of riparian buffer in water quality improvement : an economic perspective /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17730.pdf.

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Razifar, Pasha. "Novel Approaches for Application of Principal Component Analysis on Dynamic PET Images for Improvement of Image Quality and Clinical Diagnosis." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6053.

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6

Park, Seonyeong. "Respiratory Prediction and Image Quality Improvement of 4D Cone Beam CT and MRI for Lung Tumor Treatments." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/5046.

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Identification of accurate tumor location and shape is highly important in lung cancer radiotherapy, to improve the treatment quality by reducing dose delivery errors. Because a lung tumor moves with the patient's respiration, breathing motion should be correctly analyzed and predicted during the treatment for prevention of tumor miss or undesirable treatment toxicity. Besides, in Image-Guided Radiation Therapy (IGRT), the tumor motion causes difficulties not only in delivering accurate dose, but also in assuring superior quality of imaging techniques such as four-dimensional (4D) Cone Beam Co
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Rius-Vilarrasa, Elisenda. "Evaluation of a Video Image Analysis system for the prediction of carcass and meat quality in genetic improvement programmes." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4394.

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Video Image Analysis (VIA) is a digital camera based technology that extracts relevant information from images using purpose tailored image processing software. In the present work, the VSS2000 image analysis system from E+V Technology GmbH has been used in a large lamb abattoir to determine the value of carcasses in an objective, consistent and automated way. In this thesis results are reported of several experiments conducted within the framework of two UK-funded projects. The aims of the research were (i) the calibration and validation of the VIAtechnique for the evaluation of lamb carcasse
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A-iyeh, Enoch. "Voronoi tessellation quality: applications in digital image analysis." A-iyeh E., Peters, J.F, Proximal Groupoid Patterns in Digital Images, Computing Research Repository: Computer Vision and Pattern Recognition, 2016, 2017. http://hdl.handle.net/1993/32055.

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A measure of the quality of Voronoi tessellations resulting from various mesh generators founded on feature-driven models is introduced in this work. A planar tessellation covers an image with polygons of various shapes and sizes. Tessellations have potential utility due to their geometry and the opportunity to derive useful information from them for object recognition, image processing and classification. Problem domains including images are generally feature-endowed, non-random domains. Generators modeled otherwise may easily guarantee quality of meshes but certainly bear no referen
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Howlett, John David. "Size Function Based Mesh Relaxation." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd761.pdf.

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Martincová, Marie. "Hodnocení výkonnosti podniku podle modelu Start Plus a návrhy na zlepšení." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2020. http://www.nusl.cz/ntk/nusl-416857.

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The diploma thesis deals with the evaluation of the performance of a selected company using one of the evaluation models, namely the Start Plus model. Based on this model, an analysis of the company was performed, the output of which was the identification of the company's strengths and areas for improvement. In selected areas changes have been propesed aiming to reduce costs and streamline processes of the company.
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Бойко, Дмитрий Александрович. "Декомпозиционный метод и подсистема повышения качества визуализации анатомических и патологических структур на цифровых маммограммах". Thesis, НТУ "ХПИ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/28544.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.11.17 – биологические и медицинские приборы и системы – Национальный технический университет "Харьковский политехнический институт", Харьков, 2017. Работа посвящена решению актуальной научно-технической задачи – повышению качества визуализации анатомических и патологических структур на слабоконтрастных полутоновых изображениях молочной железы за счет разработки новых методов и подсистемы визуализации маммографических снимков, что позволит обеспечить поддержку врача-рентгенолога при принятии решений в медици
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Бойко, Дмитро Олександрович. "Декомпозиційний метод та підсистема підвищення якості візуалізації анатомічних і патологічних структур на цифрових мамограмах". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/28541.

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Дисертація на здобуття наукового ступеня кандидат технічних наук за спеціальністю 05.11.17 – біологічні та медичні прилади i системи – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017. Робота присвячена вирішенню актуальної науково-практичної задачі – підвищенню якості візуалізації анатомічних і патологічних структур на слабоконтрастних напівтонових зображеннях МЗ за рахунок розробки нових цифрових методів обробки та підсистеми візуалізації мамографічних знімків. Розроблені математична модель зображення АПС молочної залози на цифровій мамограмі, яка заснов
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Kauniskangas, H. (Hannu). "Document image retrieval with improvements in database quality." Doctoral thesis, University of Oulu, 1999. http://urn.fi/urn:isbn:9514253132.

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Abstract Modern technology has made it possible to produce, process, transmit and store digital images efficiently. Consequently, the amount of visual information is increasing at an accelerating rate in many diverse application areas. To fully exploit this new content-based image retrieval techniques are required. Document image retrieval systems can be utilized in many organizations which are using document image databases extensively. This thesis presents document image retrieval techniques and new approaches to improve database content. The goal of the thesis is to develop a functional re
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Proença, José de Aguiar. "A contribuição da implementação do controlo da qualidade da imagem radiológica digital para a melhoria contínua da qualidade num serviço de imagiologia: o estudo de caso no serviço de imagiologia do HFF." Master's thesis, [s.n.], 2008. http://hdl.handle.net/10284/1086.

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Dissertação de Mestrado apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Qualidade.<br>O presente trabalho de investigação aborda a importância da implementação do controlo da qualidade da imagem radiológica digital no processo da melhoria contínua da qualidade do Serviço de Imagiologia do Hospital Fernando Fonseca. O objectivo geral deste estudo consistiu em implementar um referencial de controlo da qualidade da imagem radiológica digital no Serviço de Imagiologia do Hospital Fernando da Fonseca. Formulou-se a seguinte questão de in
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Ben, Younes Ridha. "Contribution à l'amélioration qualitative et quantitative des images de médecine nucléaire en tomographie d'émission à simple photon." Besançon, 1989. http://www.theses.fr/1989BESA2008.

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Reconstruction tomographique de la distribution radioactive d'un traceur placé dans le milieu non atténuant puis atténuant. Différentes méthodes de reconstruction, performances et contrôle de la qualité du détecteur, dégradation des images. Méthode de détection automatique des contours
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Hamilton, Lei Hou. "Reduced-data magnetic resonance imaging reconstruction methods: constraints and solutions." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42707.

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Imaging speed is very important in magnetic resonance imaging (MRI), especially in dynamic cardiac applications, which involve respiratory motion and heart motion. With the introduction of reduced-data MR imaging methods, increasing acquisition speed has become possible without requiring a higher gradient system. But these reduced-data imaging methods carry a price for higher imaging speed. This may be a signal-to-noise ratio (SNR) penalty, reduced resolution, or a combination of both. Many methods sacrifice edge information in favor of SNR gain, which is not preferable for applications which
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RAPISARDA, EUGENIO. "Improvements in quality and quantification of 3D PET images." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/28157.

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The spatial resolution of Positron Emission Tomography is conditioned by several physical factors, which can be taken into account by using a global Point Spread Function (PSF). In this thesis a spatially variant (radially asymmetric) PSF implementation in the image space of a 3D Ordered Subsets Expectation Maximization (OSEM) algorithm is proposed. Two different scanners were considered, without and with Time Of Flight (TOF) capability. The PSF was derived by fitting some experimentally acquired images of a Na22 cylindrical source reconstructed with an OSEM algorithm. The fitting function
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Nguyen, Tien Nam. "Segmentation, Recognition and Indexing of Cham characters in Cham documents." Electronic Thesis or Diss., La Rochelle, 2023. http://www.theses.fr/2023LAROS016.

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Depuis la disparition des royaumes Champa au cours du 19e siècle, la langue Cham qui est née et s'est développée à partir de 2e siècle, n'est plus vraiment utilisée chez les descendants des Champa. Le manque de transmission des connaissances et des documents de la culture Cham rend, l'étude de cette langue difficile pour les épigraphistes et les historiens. Par conséquent, le projet ANR CHAMDOC vise à préserver et proposer des outils pour étudier la langue Cham. Dans cette thèse, nous nous sommes concentrés sur l'analyse de deux types de documents Cham à savoir : des inscriptions, qui ont été
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Tsai, Chi-Shien, and 蔡繼賢. "Image Quality Improvement for JPEG Images." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/07438556114344329220.

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碩士<br>淡江大學<br>資訊工程學系資訊網路與通訊碩士班<br>101<br>In this paper we proposed a method to enhance the quality of the decompressed JPEG images, which is an improved version of the method proposed by Chang et.al.. A so-called Modified Coefficient Adjustment Block is used to record the round off situation while DCT coefficients in a block are quantized according to a given quantization block. In the decompression stage, the information recorded in the Modified Coefficient Adjustment Block is then referred to adjust the de-quantized DCT coefficients before the Inverse DCT transformation. We provide two choic
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Chu, Jia-Hui, and 朱家慧. "Improvement of Low Quality Image." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/77738125267770762316.

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碩士<br>國立臺灣海洋大學<br>資訊工程學系<br>100<br>Currently, many devices are available to capture images. The image color is usually distorted if a low cost device is adapted. This thesis explores an approach of improving the low-quality digital images such as cell phone cameras through correction of distorted color images. This thesis proposes a color correction algorithm for the low-quality digital images. The proposed method uses the expectation maximization algorithm (EM algorithm) to obtain the parameters, which assign input images into many defects classes. There are three processing steps for the pro
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Vigneron, Catherine M. "Radiometric image quality improvement of scansar data." Thesis, 1996. http://hdl.handle.net/2429/4660.

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Remotely-sensed synthetic aperture radar (SAR) image data are of fundamental importance for the detection and monitoring of characteristics of the Earth's surface such as geophysical parameters, ocean current patterns, and agricultural crop features. In 1998, the European Space Agency will launch the ENVISAT-1 satellite which will carry an Advanced Synthetic Aperture Radar (ASAR) system capable of imaging large portions of the Earth's surface using a Scanning Synthetic Aperture Radar (ScanSAR) mode of operation. However, these images will be of little value to the Earth observation commu
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Lu, Yi-I., and 呂意宜. "Research on Image Quality Improvement for Plasma Display." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/40374498067278413545.

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碩士<br>國立雲林科技大學<br>電機工程系碩士班<br>92<br>Because of the coming of digitization times, accompanying HDTV (High-Definition TV) shows, the quality and resolution of the images are promoted in addition to more channels we can chose and extra multimedia service. The effects using traditional CRT is very poor and using HDTV becomes most beautifully described. Due to the uncommon price of LCD and PDP panels attached to HDTV, it is too expensive to attract consumers. This thesis proposes the novel driving method to reduce the frequency of the Data IC’s switching, in order to decrease the power consumptions
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Yeh, Ching-Ju, and 葉靜如. "On the Quality Improvement of Digital Image Processing." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/34737257308259097896.

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碩士<br>元智大學<br>資訊管理學系<br>95<br>Upgrading speed of hardware devices makes life more convenient and brings more digital multimedia applications. As a result, digital image processing techniques are gaining their importance. It is also a key factor on making the quality of Digital Image satisfactory to users. When users are unable to acquire detail image information, it is common to enlarge the image to get the information which users want to. Many Scale Algorithms of digital image have been brought by researchers. However, not all digital image applications and images in different environments ar
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CHEN, SHU-HUAN, and 陳書桓. "Visual Quality Improvement on Lossy Image Compression Technique." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/37667676270820944664.

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碩士<br>亞洲大學<br>資訊工程學系<br>104<br>Abstract Data compression is an important issue of mobile computing environment. Storage utilization and data transmission condition are two most important issues of mobile computing environment. Data compression can significantly reduce the size of data file that will be helpful for saving the cost of storage and transmission data. According to advanced information technique development, digital image creation is easier than before. Also, the size of digital image file is larger than before because of the high resolution camera device. Thus, many data compressi
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Wei, Min-hong, and 魏銘宏. "Noise Removement and Quality Improvement for Document Image." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/19785682646816408162.

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碩士<br>義守大學<br>資訊工程學系碩士班<br>96<br>This thesis aims on the improvement for the degraded documents due to non-uniform illumination, shadows, low contrast, noise, smear and pollution. Traditional methods use different way to determine a proper threshold, and then binarize a gray level image. However, these methods need to tune parameters to deal with different types of degraded documents. Moreover, the removement of noise appears a challenging problem. In this thesis several thresholding methods are applied and examined for image binarization. Then we propose a character segmentation method for ex
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Liaw, Yi-Ching, and 廖怡欽. "Quality Improvement of Digital Color Image Using Vector Quantization." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/29391367473495533483.

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博士<br>逢甲大學<br>資訊工程所<br>92<br>As a result of the popularity of computer, Internet, and digital camera, the application of digital color images is more and more popular. Compared to the traditional photography, digital color images always requires high cost in capturing and storing images. To reduce the acquisition cost of digital color images, a single-chip image sensor instead of a high cost three-chip image sensor is usually used and CFA interpolation techniques are commonly applied to generate missing colors. To reduce the cost of storing digital color images, image compression is frequently
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Peng, Pin-Chau, and 彭品超. "A Methodology for Color Quality Improvement Using Image Segmentation." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/83355415856275826122.

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碩士<br>世新大學<br>圖文傳播暨數位出版學研究所(含碩專班)<br>93<br>Color Management System (CMS) adjusts colors between different devices to achieve what you see is what you get. Color Management Modules (CMMs), components of CMS, are participated to contribute the better color quality. Not only the capability of CMM itself, but also the collaboration among CMMs, affects the quality of color reproduction. However, the imperfection of CMM, such as the roughness of colorimetric characterization algorithms, may limit the capability of CMM. Moreover, the lack of framework for collaborating different CMMs developed by di
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Simões, Beatriz Rodrigues Branco de Almeida. "Image Quality Improvement of Medical Images using Deep Learning for Computer-aided Diagnosis." Master's thesis, 2020. http://hdl.handle.net/10362/115387.

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Retina image analysis is an important screening tool for early detection of multiple dis eases such as diabetic retinopathy which greatly impairs visual function. Image analy sis and pathology detection can be accomplished both by ophthalmologists and by the use of computer-aided diagnosis systems. Advancements in hardware technology led to more portable and less expensive imaging devices for medical image acquisition. This promotes large scale remote diagnosis by clinicians as well as the implementation of computer-aided diagnosis systems for local routine disease screening. However, lowe
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Lin, Chun-Cheng, and 林駿丞. "Image quality improvement of microPET images by an accelerated reconstruction algorithm and filters." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/36340911317664951757.

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碩士<br>國立陽明大學<br>放射醫學科學研究所<br>95<br>Abstract Introduction: PET can provide in vivo, quantitative and such as maximum likelihood expectation maximization (MLEM) algorithm are rapidly becoming the standard for image reconstruction in emission computed tomography. Because a large number of iterations may be required, MLEM algorithm has very slow convergent speed. The objective of our study was to develop a fast and better reconstruction algorithm and improve the image quality of the reconstruction algorithm by implementing filter. Methods and Materials: We developed a new algorithm called modifi
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Peng, Bing-Chia, and 彭昺嘉. "The Improvement of TFT-LCD Timing Control and Image Quality." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/63339034395152602394.

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碩士<br>國立交通大學<br>資訊學院碩士在職專班資訊組<br>94<br>ABSTRACT TFT-LCD is a lighter weight, lower power, no radiation and thinner display than bulky display. In virtue of these characteristics, it is convenient to deploy TFT-LCD in car, PDA, notebook, monitor and TV etc. In this thesis, we describe TFT-LCD panel operation, driving methods from system view, and use Verilog HDL to implementation flexible TFT-LCD timing controller. Due to that different panel module implementations have different characteristics, panel module will affect designs on timing control signals. In early timing controllers the consta
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Yan, Shuo. "Adaptive Image Quality Improvement with Bayesian Classification for In-line Monitoring." Thesis, 2008. http://hdl.handle.net/1807/11279.

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Development of an automated method for classifying digital images using a combination of image quality modification and Bayesian classification is the subject of this thesis. The specific example is classification of images obtained by monitoring molten plastic in an extruder. These images were to be classified into two groups: the “with particle” (WP) group which showed contaminant particles and the “without particle” (WO) group which did not. Previous work effected the classification using only an adaptive Bayesian model. This work combines adaptive image quality modification with the a
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Yang, Tung-Chich, and 楊東杰. "The deformation of PV modules and image quality improvement to improve." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/69822220885847038277.

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碩士<br>崑山科技大學<br>機械工程研究所<br>100<br>The purpose of this study ,the lamination of the solar cells to prior, all cells in the basement at the top of (hereinafter referred to as PV modules) do scintigraphy. But it’s base is made of glass, into the region to take like glass deformation taken image is also deformed. Caused by staff to determine the hard problems. Caused by staff to determine the hard problems.So that the module is not deformed image area, and desirable to clear the image. Using ANSYS analysis, find the index of the glass deformation and image contrast to enhance the quality of the t
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CHUNG, HSIN-YI, and 鍾幸宜. "Improvement of Denoised Image Quality Using Global Similarity Post-Processing Approach." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/5wdh26.

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碩士<br>亞洲大學<br>資訊傳播學系<br>104<br>The quality of digital image would be deteriorated by the corruption of impulse noise in the record or transmission. How to efficiently remove this impulse noise for a corrupted image is an important research task. This thesis proposes a post-processing method for the improvement of a denoised image in the corruption of salt-and-pepper noise. In the first stage, a variable-size local window incorporated with pixel probability adaptation method is employed to remove impulse noise for a noisy image. In the second stage, a codebook which is constituted of a clean pi
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Hsu, Ching-Fu, and 許景富. "Improvement on Image Quality, Sharpness and Power Saving for Mobile Displays." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5441035%22.&searchmode=basic.

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博士<br>國立中興大學<br>電機工程學系所<br>107<br>This dissertation presents methodologies and techniques to improve image quality, text sharpness and power saving of mobile display devices. The presented contents of the dissertation are written in four principal contributions. First, a new four-colors filter structure with Red, Green, Blue, and Yellow colors (RGBY) is proposed to expand and increase 13% color gamut and slight brightness improvement of four-color displays using TFT arrays with stripe arrangement. Moreover, this new four-color filter structure without additional fabrication cost is accompanied
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Chin, Chih-ming, and 金志明. "Study of Improvement of the Image Sticking Quality by Using Taguchi Method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/39311666648580594716.

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碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>100<br>This thesis proposes the experimental design to improve the image sticking quality. The traditional methods used a factor at a time or manner of trial and error process. Although these methods can accurately identify the quality conditions, time-consuming and the relative cost of production were increased. Therefore, in this thesis, the Tauchi L18 orthogonal array was used to conduct a systematic generalization and data analysis. This method uses a less experimental frequency to obtain the best combination of conditions. It also can improve the disadvantage
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Yeh, Yu-Hsiu, and 葉砡秀. "The Improvement of Image Quality for Patient with Small Breast Size in Mammography." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/04629811010045246958.

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碩士<br>中原大學<br>醫學工程研究所<br>95<br>The image quality which usually could optimize with automatic exposure control (AEC) system is very important issue in mammography. However, imaging patients with small breast size may cause system underexposure and induce image quality problem. The purpose of this study is to develop an imaging technique to solve the problem for patients with small breast size during mammography. In this study, several phantoms (such as BR12, PMMA and CDMAM) are employed to investigate the imaging performances for both film-screen mammography (FSM) and computed radiography mammo
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Wu, Chen-Mao, and 吳振茂. "Image Processing Using the Least-Squares Approximation for Quality Improvement of Underwater Laser Ranging." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/74858553440456669703.

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碩士<br>國立中山大學<br>海下技術研究所<br>91<br>This paper attempts to use image processing methods to reduce the influences of ambient light and scattering effect on the performance of an underwater range finder. The Taguchi method, as well, is employed to increase the repeatability of underwater range finding. In this study, the image processing methods of the least-squares approximation, brightness and contrast adjustment, and primary color processing are presented. The illumination center is also used to estimate the position of the laser spot in the image. In addition, a bandpass optical filter at the
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Chiu, Yung-Liang, and 邱永樑. "An Empirical Study on the Process Quality Improvement of Image Maps Using Six Sigma." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/37906926006205470575.

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碩士<br>國立勤益科技大學<br>研發科技與資訊管理研究所<br>98<br>DigitalGlobe launched their QuickBird satellite in 2001 to collect high-resolution images and gather environmental data. These pictures taken from space have numerous applications, including archeology, mapping, environmental protection, planning and development, etc. Image map production processes are very complicated. Due to frequent natural disasters in recent years, the ability to quickly produce an accurate map has become an important issue. Because Six Sigma emphasizes flow improvement and integrated performance, it is a highly respected strategy i
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Huang, Cheng-ching, and 黃正慶. "Improvement and Analysis of Image Quality in High-Resolution Camera/Cell Phone Using Taguchi Method." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/4sqmdw.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>98<br>The optical factory in Taiwan are having make cell phone lens problems that the very large gap between design and manufacture of high-resolution cell phone lens, and have the development of high failure rate. Although the optical designer has the best of optical systems and optical sensitivity analysis in the design phase. But the optical system design almost is not absolutely perfect. Our main discussion will focus on how to understand the basic optical theory and make optical lens of process ,and use of Taguchi Method ,then we can find strengths and wea
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Shih, Jyun-Min, and 施駿民. "Image Quality Improvement Using Genetic Algorithm and Liquid Lens in 9X Zoom Lens Intermediate Optics." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/v8kfud.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>102<br>Optical design technology has been developed for a long time. It is applicated in everyday life such as smartphone. In recent year, smartphone combined optical machine system to develop mini-projector system. Mini-projector system is projected light souce onto the screen. Compare with other optical capture system, porjector need large image that it focus on effect of Petzval surface curvature. At present, academic research propose 9x Zoom lens intermediate optics. The intermediate image technology using optical zoom system can reduce diameter of first lens.
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Wang, Hwai-Yu, and 汪懷虞. "The analysis of image quality and the improvement of attenuated video signals in the cableTV system." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/95004462412956460559.

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碩士<br>國立政治大學<br>教育學類<br>85<br>ABSTRACT It is desired by the subscribers to receive high quality images from the cable TV company. However, subscribers at the transmission line terminals generally spread out. Due to the company's consideration of investment and income rate, they often have inferior qualities on the received images. The researchers in this area have endeavored to improve the TV picture quality, as well as to reduce its extra cost without
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Yeh, Yen-Wei, and 葉彥緯. "Improvement of ambient contrast ratio and see-through image quality for organic light-emitting diodes display by using micro-optics components and diffraction analysis." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/42260485195174245920.

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碩士<br>國立交通大學<br>顯示科技研究所<br>104<br>Compared to the current mainstream liquid crystal display, organic light-emitting diodes (OLED) display has wide viewing angle, high contrast, low power consumption and it can apply for flexible and transparent display. However, the metal cathode with high reflectance in an OLED pixel not only recycles display’s effective light, but also reflects ambient light strongly, which makes OLED display to have poor ambient contrast ratio. To solve this problem, circular polarizer is widely used in current products to eliminate ambient light reflection, but it also red
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Liu, Shin-Tso, and 劉時佐. "Applying Healthcare Failure Mode and Effects Analysis in the Improvement of Image and Report Quality of Computed Tomography Scan and Magnetic Resonance Imaging for Cancer Patients." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/70428658984925454605.

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碩士<br>靜宜大學<br>管理碩士在職專班<br>99<br>The correct imaging diagnosis is the first step to cancer patient treatment. Due to the increasing complexity of contemporary medical workflow, it is important to conduct systematic analysis in order to improve the quality of imaging reports. Healthcare Failure Mode and Effects Analysis (HFMEA) is a prospective and structural risk analysis tool in medical practice, which allows further comprehensive investigation and discussion of current medial operating system. Furthermore, it can also assist medical institute managers to make prioritized decisions on medical
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Chiang, Cheng-Yen, and 蔣正彥. "Quality Improvement and Application of 3D Medical Images." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/68328046217456779975.

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碩士<br>國立成功大學<br>電腦與通信工程研究所<br>96<br>The generation of the surface of 3D medical images indicates that a series of 2D medical images produces 3D objects presented on the screen of a computer and users can manipulate the 3D objects through the computer as well. The quality of rebuilt 3D medical objects will be affected by the 2D image segmentation and 3D reconstruction methods. In order to produce better quality of the 3D medical images under the premise of accuracy and efficiency, this paper analyses the defects on the surface of 3D medical objects and presents a series of algorithms which is t
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Chuang, Chi-Hsin, and 莊啟新. "Quality Improvement of Color Filter Array Interpolated Images Using Vector Quantization." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/18853033550977887006.

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碩士<br>逢甲大學<br>資訊工程所<br>93<br>Nowadays, digital acquisition devices, such as digital still cameras (DSCs), have been used widely for capturing digital images. To reduce the cost of digital acquisition devices, the color filter array (CFA) is generally coated upon a single-chip image sensor. Each perceptual unit of the single-chip image sensor senses only one of the R, G, and B colors under CFA. To construct an image of full color from a CFA image, the two missing colors of a pixel should be estimated. The process of generating missing components is called CFA interpolation. However, the artifac
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趙岷江. "Formation and quality improvement of underwater acoustical images in short range." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/54802664680161129958.

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Phothong, Watchama, and 張清. "Generation and Quality Improvement for 3D Triangular Model Constructed by 2D Multiple Images." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/v634a6.

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博士<br>國立中央大學<br>機械工程學系<br>106<br>The shape-from-silhouette (SFS) method has been widely used in three-dimensional (3D) shape reconstruction. It uses silhouettes of a series of two-dimensional (2D) images of an object captured from multiple viewpoints to generate a 3D model that describes the visual hull of the object. The inherent problem with this method is the virtual features that appear all over the model because of being formed by the intersection of multiple polyhedra from different views. In addition, concavities on the object may wrongly be modeled as convex shape because they are invi
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Robalo, Bruno Miguel de Brito. "Design of a diffusion phantom for quality control of spinal cord DTI and EPI distortion improvement." Master's thesis, 2016. http://hdl.handle.net/10451/26354.

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Tese de mestrado integrado em Engenharia Biomédica e Biofísica, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2016<br>A imagem ponderada em difusão (DWI) é uma técnica de ressonância magnética (MR) capaz de medir a magnitude da difusão de moléculas de água nos tecidos. A extensão desta técnica, a imagem por tensor de difusão (DTI) utiliza gradientes aplicados ao longo de pelo menos seis direções diferentes no espaço e deste modo é capaz de estimar também a principal direção de difusão das moléculas de água nos tecidos. Consequentemente é possível obter informações sob
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