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Dissertations / Theses on the topic 'GRAY SCALE IMAGE'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

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1

Fetter, Paul. "Heuristics for selecting gray scale morphological structuring elements /." Online version of thesis, 1994. http://hdl.handle.net/1850/11728.

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2

Ström, Bartunek Josef. "FINGERPRINT IMAGE ENHANCEMENT, SEGMENTATION AND MINUTIAE DETECTION." Doctoral thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-11149.

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Prior to 1960's, the fingerprint analysis was carried out manually by human experts and for forensic purposes only. Automated fingerprint identification systems (AFIS) have been developed during the last 50 years. The success of AFIS resulted in that its use expanded beyond forensic applications and became common also in civilian applications. Mobile phones and computers equipped with fingerprint sensing devices for fingerprint-based user identification are common today. Despite the intense development efforts, a major problem in automatic fingerprint identification is to acquire reliable matc

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3

Becer, Huseyin Caner. "A Robust Traffic Sign Recognition System." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612912/index.pdf.

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The traffic sign detection and recognition system is an essential part of the driver warning and assistance systems. In this thesis, traffic sign recognition system is studied. We considered circular, triangular and square Turkish traffic signs. For detection stage, we have two different approaches. In first approach, we assume that the detected signs are available. In the second approach, the region of interest of the traffic sign image is given. Traffic sign is extracted from ROI by using a detection algorithm. In recognition stage, the ring-partitioned method is implemented. In this metho

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4

Muhammad, Imran. "Colorizing Grey Scale Images." Thesis, Högskolan Dalarna, Datateknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:du-6181.

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The purpose of this thesis is to develop a working methodology to color a grey scale image. This thesis is based on approach of using a colored reference image. Coloring grey scale images has no exact solution till date and all available methods are based on approximation. This technique of using a color reference image for approximating color information in grey scale image is among most modern techniques.Method developed here in this paper is better than existing methods of approximation of color information addition in grey scale images in brightness, sharpness, color shade gradients and di

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5

Kowalewski, Damian. "Edge-based encoding of gray-scale images." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80305.

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This thesis explores image compression based on visual information contained within the edges. This work is based on an observation that not all the information contained within an image is used by the human brain. Previous works demonstrate methods for reconstructing images adequately using edge information. We exploit the fact that some components of the image can be removed while having little effect on human perception: this is the key basis for the compression developed in this thesis. We first construct compression preserving all the edge information extracted from the image. We t

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6

Dokladal, Petr. "Grey-scale image segmentation : a topological approach." Marne-la-Vallée, 2000. http://www.theses.fr/2000MARN0065.

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Le domaine aborde par cette these concerne la segmentation des images en niveaux de gris. Deux approches principales et independantes ont ete exploitees : l'application des graphes a l'operateur h-minima pour une segmentation des images multi-classes et la segmentation basee sur la topologie appliquee a l'angiographie du foie par tomographie. Une presentation des modeles mathematiques existants, utilises pour modeliser la topologie est faite dans un premier temps. Les modeles presentes sont discutes du point de vue de leurs applications a la segmentation d'images. La methode des h-minima est u

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7

Dale-Jones, Ralph. "Contrast enhancement using grey scale transformation techniques." Thesis, University of Warwick, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387342.

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8

Ganapathiraman, Subburengan. "QUANTIFICATION OF SURFACE DEFECTS USING PRIMARY HIGHLIGHT IN DIFFUSE ANGLE GRAY SCALE IMAGES." UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/348.

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The thesis presented is an effort to gather all possible information of one particular type of common paint defect the seed defect, from gray scale images of highly specular painted surface. The proposed approach in the thesis utilizes a white light source to illuminate the surface and utilizes a camera to capture its gray scale image at different diffused angles. While attempting to explain the physics of highlight formation in terms of location on the surface of a seed defect, the thesis also extends to utilize this information from gray scale images to accurately predict the parameters of

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9

Al-Gindy, Ahmed M. N. "Design and analysis of Discrete Cosine Transform-based watermarking algorithms for digital images. Development and evaluation of blind Discrete Cosine Transform-based watermarking algorithms for copyright protection of digital images using handwritten signatures and mobile phone numbers." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5450.

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This thesis deals with the development and evaluation of blind discrete cosine transform-based watermarking algorithms for copyright protection of digital still images using handwritten signatures and mobile phone numbers. The new algorithms take into account the perceptual capacity of each low frequency coefficients inside the Discrete Cosine Transform (DCT) blocks before embedding the watermark information. They are suitable for grey-scale and colour images. Handwritten signatures are used instead of pseudo random numbers. The watermark is inserted in the green channel of the RGB colour imag

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10

Ravikumar, Rahul. "Multi-scale texture analysis of remote sensing images using gabor filter banks and wavelet transforms." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3175.

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11

Önügören, Onur [Verfasser]. "Assessment of long axis ventricular function in the fetal heart based on 2D grey scale image processing with a tissue tracking algorithm / Onur Önügören." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2011. http://d-nb.info/1025353986/34.

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12

Prados, Gutiérrez Ricard. "Image blending techniques and their application in underwater mosaicing." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/111333.

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The fusion of several images of the same scene into a single and larger composite is known as photo-mosaic. Unfortunately, the seams along image boundaries are often noticeable, due to photometrical and geometrical registration inaccuracies. Image blending is the merging step in which those artefacts are minimized. Processing bottlenecks and the lack of medium-specific processing tools have restricted underwater photo-mosaics to small areas despite the hundreds of thousands of square meters that modern surveys can cover. Producing these mosaics is difficult due to the challenging nature of the

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13

Albà, Xènia. "Automated cardiac MR image analysis for population imaging." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/403063.

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La pràctica clínica i la investigació generen grans quantitats de registres mèdics, incloent-hi imatges. No obstant això, molta informació que podria millorar l'assistència sanitària continua sent inaccessible. Es necessiten noves eines per processar dades a gran escala que tinguin en compte la variabilitat en l'anatomia i la fisiopatologia. En aquesta tesi, es presenten nous procediments per al tractament automàtic i eficient de dades mèdiques a gran escala, concretament en la segmentació d'imatges cardíaques de ressonància magnètica (RM). Les principals aportacions d'aquesta tesi permeten la

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14

Pen, Chih-Hsiu, and 賁致修. "The Study of Color to Gray-Scale Image Transform." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/3wpgw5.

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碩士<br>國立中興大學<br>電機工程學系所<br>101<br>Most methods that convert color images to grayscale images use the intensity value directly for the converted grayscale value. When two pixels have different colors but the same intensity values, the conversion causes the original contrast to disappear. In addition, human visual system has a tendency of regarding regions with similar colors or structures as a whole. To solve the aforementioned problem and incorporating the characteristics of the human visual system into the color conversion, this thesis proposes a color-to-grayscale conversion method that

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Chan, Cheng Che, and 詹政哲. "Feature Extraction Strategy for Face Detection in Gray Scale Image." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/67649605385861151342.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>91<br>In recent years, the computer technology is fast developing and advancing. The speed of the computer enables the machine vision can be applied in many areas such as face detection and object tracing. There have been many researches in these fields, but most of them are based on color information. In this study, the technology of image processing aims to detect and trace human face with a web cam in grey scale images. Most of the previous face detection researches proposed detection methods using skin-color information to find out possible face-like

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黃智任. "On the study of gray-scale image segmentation via fuzzy disks." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/78919317925877406755.

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17

吳育奇. "Gray-scale and color morphological image processing via binary decision diagrams." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/58067306959480891974.

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18

Jiang, Yao Min, and 江耀民. "A study of face detection in color and gray scale image." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/75944699952213921230.

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碩士<br>清雲科技大學<br>電機工程系所<br>96<br>The problem of human face detection has been studied for many years. Although considerable successes have been achieved, much work remains to be done to devise improved algorithms. The objectives of this research are proposing a novel scheme for quasi-skin region face detection in color image and exploring the face detection reliability of neural network in gray scale image. In color image, a robust algorithm for face detection based on skin color segmentation is proposed. A quasi-skin region that connects the human face, neck, and body is formed while wearing s

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19

Liu, Che-Wei, and 劉哲瑋. "Automatic Fingerprint Identification System Based on Direct Gray-Scale Image Processing." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/71788007314982342476.

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博士<br>淡江大學<br>電機工程學系博士班<br>98<br>Abstract: Fingerprint is the most popular biometric feature that is widely accepted by the public. Fingerprint is also adopted by the court to be the forensic evidence. Even now, a lot of family and company use a fingerprint recognition system as the access control system. Fingerprints possess two characteristics: Uniqueness and Invariance. The age and the damage on the finger didn’t change the pattern of fingerprint. Therefore, fingerprint can be the identity of individual. Fingerprint had been researched for several hundred years. The first systematic

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20

Liou, Guan-Yu, and 柳冠宇. "A Study of Color Image Protection Using Reversible Data Hiding Schemes for Gray-Scale Images." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/53145956113001450105.

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碩士<br>國立高雄第一科技大學<br>資訊管理所<br>97<br>Digital data have been widely transmitted and used on the practical lives as the great progress of computer and network technology in recent years. The problem of digital data protection becomes very important and is concerned. Many relevant studies to achieve the solution of this problem have been proposed. In this work, we propose a protection mechanism for color images using reversible data hiding schemes. Two kinds of images are generated for a test color image, one is a high quality color image and the other is a grayscale image. The grayscale image is f

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21

Kuo, Chun-Hsiang, and 郭俊祥. "Cellular Neural Networks Application to Gray-Scale Image Noise Cancellation Based on Particle Swarm Optimization." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/13401418881628776559.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>96<br>Cellular Neural Networks (CNN) are characterized by the parallel computing of simple processing cells locally interconnected. Due to their local connectivity, CNN can be viewed as image processing and can allow operating at a very high speed in real time. Therefore, CNN can be applied to other areas, including signal processing, solving optimization problem, image compression, and VLSI implementation, etc. In this thesis, the technique of image noise cancellation is presented by employing the hybrid CNN and Particle Swarm Optimization (PSO). The main

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22

GOEL, YUVRAJ. "3D VIDEO CODING." Thesis, 2011. http://dspace.dtu.ac.in:8080/jspui/handle/repository/13874.

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M.TECH<br>Interest in 3DTV has increased recently with more and more products and services becoming available for the consumer market. 3D video is an emerging trend in developing digital video system. Three-dimensional multi-view video is typically obtained from a set of synchronized cameras, which are capturing the same scene from different viewpoints. The video (texture) plus depth (V+D) representation is an interesting method to realize 3D video. A depth map is simply a grayscale image which represents the distance between a pixel and camera in black and white. However, a major problem whe

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23

HUANG, HONG-BEN, and 黃宏本. "A study on representations of gray scale images." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/11441015822184322194.

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24

Hui, Yu Rong, and 于榮輝. "Adaptive Discrete Cosine Transform Coding of Gray-Scale Images." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/15830412519295635772.

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碩士<br>國立中央大學<br>資訊及電子工程研究所<br>82<br>An adaptive cosine transform coding scheme for gray-scale images based on HVS is proposed in this thesis. Ngan, Leong, and Singh's approach is adopted in this paper. In our block adaptive scheme, a new range scale factor function is proposed to improve the subjective quality of those blocks which contain edges. Besides, we will propose a new adaptive block-effect redunction method to reduce the block effect resulting from block transform coding schemes. T

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25

ZHAO, WEI-GANG, and 趙維岡. "Mesh Editing Via Vertex Insertion and Displacement Based on Gray Scale Images." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/crgtju.

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碩士<br>大同大學<br>資訊工程學系(所)<br>107<br>There are many ways to change the appearance of a model in many modeling software. Each method requires different conditions or difficulty. In the case of making a triangular mesh into a desired pattern on the surface of the model, it is usually only in a slow way. In this paper, the triangular mesh of the model surface is changed to form a graph, and the process is simple and rapid. The paper discusses the establishment of material coordinates, the search for graphic regions, and the reconstruction of triangular meshes.

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26

陳欣蓮. "Recognition Techniques for 3D Objects of Specific Geometric Shapes from Gray Scale Images." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/22237368179187930468.

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27

Wei, Yi-Sin, and 魏逸昕. "Use Nakagami m value to caompare Fundamental Gray-Scale and Second Harmonic Ultrasound Liver Images." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/84505997962045874919.

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28

Yu, Rui-Wen, and 游瑞文. "A Study of Share Size Invariant Secret Sharing Techniques for Gray-scale and Color Images." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/3g7jnp.

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碩士<br>臺中技術學院<br>資訊科技與應用研究所<br>97<br>Visual secret sharing (VSS) is an efficient way to share a secret image among many participants. In this scheme, the secret image is encrypted into many images which are also called shares. The secret image is revealed by overlapping share images without any complex computation. In recent years, this scheme has been employed to deal with gray-scale and color images for enhancing applications of the sharing way. However, most schemes result in the generated shares with large size expansion to cause the burden of bandwidth and storage space. In order to improv

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"Investigations on encryption techniques for colored and gray scale images in fourier- and fractional fourier domains." Thesis, 2009. http://localhost:8080/xmlui/handle/12345678/4551.

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