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Dissertations / Theses on the topic 'Canny edge detection algorithm'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Zavistanavičiūtė, Rasa. "Object detection algorithms analysis and implementation for augmented reality system." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2012~D_20131105_093556-36296.

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Object detection is the initial step in any image analysis procedure and is essential for the performance of object recognition and augmented reality systems. Research concerning the detection of edges and blobs is particularly rich and many algorithms or methods have been proposed in the literature. This master‟s thesis presents 4 most common blob and edge detectors, proposes method for detected numbers separation and describes the experimental setup and results of object detection and detected numbers separation performance. Finally, we determine which detector demonstrates the best results

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2

Yusro, Muhammad. "Development of new algorithm for improving accuracy of pole detection to the supporting system of mobility aid for visually impaired person." Thesis, Université Clermont Auvergne‎ (2017-2020), 2017. http://www.theses.fr/2017CLFAC107/document.

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Ces travaux de recherche visaient à développer un système d'aide à la mobilité pour les personnes ayant une déficience visuelle (VIP ‘Visually Impaired Person’) appelé ‘Smart Environment Explorer Stick (SEES)’. Le but particulier de cette recherche était de développer de nouveaux algorithmes pour améliorer la précision de la détection de la présence de poteaux de la canne SEE-stick en utilisant la méthode de calcul de distance et la recherche de paires de lignes verticales basées sur l'optimisation de la technique de détection de contour de Canny. Désormais, l'algorithme de détection des potea

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Vannucci, Maria Chiara. "Algoritmi di segmentazione di immagini mediche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10878/.

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Nell'ambito dell'elaborazione delle immagini, si definisce segmentazione il processo atto a scomporre un'immagine nelle sue regioni costituenti o negli oggetti che la compongono. Ciò avviene sulla base di determinati criteri di appartenenza dei pixel ad una regione. Si tratta di uno degli obiettivi più difficili da perseguire, anche perché l'accuratezza del risultato dipende dal tipo di informazione che si vuole ricavare dall'immagine. Questa tesi analizza, sperimenta e raffronta alcune tecniche di elaborazione e segmentazione applicate ad immagini digitali di tipo medico. In particolare l'

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Vápeník, Radovan. "Automatická optická inspekce." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217913.

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This work deals with the technical possibilities for automated optical inspection and the arrangements for monitoring the implementation of established elements. There are used methods of detection elements, including advanced algorithm processing. With the described methods was created program and each method was tested. The aim was on the clear description of the problem, the optimal design and processing program with objective results with the lowest number of false detection.

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Nalavolu, Praveen Reddy. "PERFORMANCE ANALYSIS OF SRCP IMAGE BASED SOUND SOURCE DETECTION ALGORITHMS." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/50.

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Steered Response Power based algorithms are widely used for finding sound source location using microphone array systems. SRCP-PHAT is one such algorithm that has a robust performance under noisy and reverberant conditions. The algorithm creates a likelihood function over the field of view. This thesis employs image processing methods on SRCP-PHAT images, to exploit the difference in power levels and pixel patterns to discriminate between sound source and background pixels. Hough Transform based ellipse detection is used to identify the sound source locations by finding the centers of elliptic

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Larsson, Mathias. "Machine vision for finding a joint to guide a welding robot." Thesis, University West, Department of Engineering Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-1783.

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<p>This report contains a description on how it is possible to guide a robot along an edge, by using a camera mounted on the robot. If stereo matching is used to calculate 3Dcoordinates of an object or an edge, it requires two images from different known positions and orientations to calculate where it is. In the image analysis in this project, the Canny edge filter has been used. The result from the filter is not useful directly, because it finds too many edges and it misses some pixels. The Canny edge result must be sorted and finally filled up before the final calculations can be started. T

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Guler, Muhammet Ali. "Detection Of Earthquake Damaged Buildings From Post-event Photographs Using Perceptual Grouping." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12604982/index.pdf.

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Two approaches were developed for detecting earthquake damaged buildings from post-event aerial photographs using shadow analysis and perceptual grouping. In the first approach, it is assumed that the vector boundaries of the buildings are not known a priori. Therefore, only the post-event aerial photographs were used to detect the collapsed buildings. The approach relies on an idea that if a building is fully damaged then, it will not generate a closed contour. First, a median filter is applied to remove the noise. Then, the edge pixels are detected through a Canny edge detector and the line

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Bilen, Burak. "Model Based Building Extraction From High Resolution Aerial Images." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12604984/index.pdf.

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A method for detecting the buildings from high resolution aerial images is proposed. The aim is to extract the buildings from high resolution aerial images using the Hough transform and the model based perceptual grouping techniques.The edges detected from the image are the basic structures used in the building detection procedure. The method proposed in this thesis makes use of the basic image processing techniques. Noise removal and image sharpening techniques are used to enhance the input image. Then, the edges are extracted from the image using the Canny edge detection algorithm. The edges

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Guducu, Hasan Volkan. "Building Detection From Satellite Images Using Shadow And Color Information." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609920/index.pdf.

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A method for detecting buildings from satellite/aerial images is proposed in this study. The aim is to extract rectilinear buildings by using hypothesize first verify next manner. Hypothesis generation is accomplished by using edge detection and line generation stages. Hypothesis verification is carried out by using information obtained both from the color segmentation of HSV representation of the image and the shadow detection stages&rsquo<br>output. Satellite/aerial image is firstly filtered to sharpen the edges. Then, edges are extracted using Canny edge detection algorithm. These edges are

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Němec, Zbyšek. "Derichův detektor hran." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-235475.

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This thesis presents the Deriche edge detector as an interesting alternative to the commonly used edge detectors. The Deriche edge detector's design is presented to the reader as well as its strengths and weaknesses. Performance issues of the Deriche edge detector are described in comparison with the Canny edge detector together with recommendations for using the Deriche detector. Finally, edge detection quality of the Deriche edge detector is compared to the Canny edge detector using robust subjective evaluation method.

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Labaj, Tomáš. "Detekce křivek v obraze." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236653.

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This thesis deals with curve detection in images. First, current methods used in this area of image processing are summarized and described. Main topic of this thesis is a comparison of methods of parametric curve detection, such as Hough transformation and RANSAC-based methods. These methods are compared according to several criteria which are the most important for precise edge detection.

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Fendrich, Vítězslav. "Zařízení varovného systému pro udržení vozidla v jízdním pruhu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400535.

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This thesis adresses designing a device that detects lane departure of a vehicle via a video feed from a camera module. This device is intended to be attached onto the windshield of the vehicle. The initial part of the thesis will cover the current methods of lane departure detection through a video feed. In the following part the selection of suitable hardware, specifically the latest model of a Raspberry Pi, has been made. Afterwards a suitable container for the aforementioned hardware has been designed and created using a 3D printer. Subsequently an appropriate LDWS algorithm is chosen and

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Samini, Ali. "Large scale audience interaction with a Kinect sensor." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-75520.

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We present investigation and designing of a system that interacts with big audience, sitting in a dimmed theater environment. The goal is to automatically detect audiences and some of their actions. Test results indicate that because of low light condition we can’t rely on RGB camera footage in a dimmed environment. We use Microsoft Kinect Sensor to collect data from environment. Kinect is designed to be used with Microsoft Xbox 360 for gaming purposes. It has both RGB and Infrared depth camera. Change in amount of visible light doesn’t affect data from depth camera. Kinect is not a strong cam

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Torres, Guilherme Vaz. "Nova abordagem para o processamento e análise de imagens topográficas da córnea humana." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-03032008-090325/.

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O presente trabalho trata-se do desenvolvimento de um programa para de análise de imagens de topografia corneana de sistemas comerciais, para ser implementado no topógrafo corneano para Lâmpada de Fenda, em desenvolvimento no Laboratório de Instrumentação Oftálmica - EESC/USP e no Laboratório de Física Oftálmica - FMRP/USP. O programa foi desenvolvido em C++, utilizando a plataforma Windows, e fornece mapas axiais de topografia corneana. O programa foi testado em esferas de calibração e em olhos humanos, apresentando um fator de correlação de 0,9998 para as medidas em esferas e um erro inerent

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Gustafsson, Simon, and Andreas Persson. "Detecting small and fast objects using image processing techniques : A project study within sport analysis." Thesis, Jönköping University, JTH, Avdelningen för datateknik och informatik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54343.

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This study has put three different object detecting techniques to the test. The goal was to investigate small and fast-moving objects to see which technique’s performance is most suitable within the sports of Padel. The study aims to cover and explain different affecting conditions that could cause better but also worse performance for small and fast object detection. The three techniques use different approaches for detecting one or multiple objects and could be a guideline for future object detection development. The proposed techniques utilize background histogram calculation, HSV masking w

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Modahl, Ylva, and Caroline Skoglund. "Lokalisering av brunnar i ELISpot." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254257.

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Health is a fundamental human right. To increase global health, research in the medical sector is of great importance. Decreasing time consumption of biomedical testing could accelerate the research and development of new drugs and vaccines. This could be achieved by automation of biomedical analysis, using computerized methods. In order to perform analysis on pictures of biomedical tests, it is important to identify the area of interest (AOI) of the test. For example, cells and bacteria are commonly grown in petri dishes, in this case the AOI is the bottom area of the dish, since this is wher

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Singh, Vineeta. "Segmentation of Regions with Complex Boundaries." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1479821009146599.

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Slobodník, Michal. "Využití genetického algoritmu pro detekci hran v lékařských obrazech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217736.

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This work deals with the possibilities of employing a genetic algorithm to edge detection. There is introduced a project which uses enhanced image divided into sub-regions, on which detection by genetic algorithm is applied. To achieving our goals are used individuals in two-dimensional bit arrays, for which are specially adjusted mutation and crossover operators. Cost minimization approach is used as fitness function. The project was created and tested in Matlab environment.

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Homola, Antonín. "Detekce šířky papilární linie u otisku prstu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-236952.

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This work outlines a method of detection of the papillary line width in fingerprints. This method is one of the possible methods of liveness detection. The first part of the work with deals defining of the fingerprint, attacks on today's systems and possibilities to improve security. The next section detection describes of the papillary line width. During the process of resolving, the first thing to do was to start operation of the scanning device and to read the database for tests and experiments. An independent application was created on this purpose. Further, there were projected methods fo

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Mattsson, Per, and Andreas Eriksson. "Segmentation of Carotid Arteries from 3D and 4D Ultrasound Images." Thesis, Linköping University, Department of Electrical Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1141.

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<p>This thesis presents a 3D semi-automatic segmentation technique for extracting the lumen surface of the Carotid arteries including the bifurcation from 3D and 4D ultrasound examinations. </p><p>Ultrasound images are inherently noisy. Therefore, to aid the inspection of the acquired data an adaptive edge preserving filtering technique is used to reduce the general high noise level. The segmentation process starts with edge detection with a recursive and separable 3D Monga-Deriche-Canny operator. To reduce the computation time needed for the segmentation process, a seeded region growing techn

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Janda, Miloš. "Detekce hran pomocí neuronové sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237175.

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Aim of this thesis is description of neural network based edge detection methods that are substitute for classic methods of detection using edge operators. First chapters generally discussed the issues of image processing, edge detection and neural networks. The objective of the main part is to show process of generating synthetic images, extracting training datasets and discussing variants of suitable topologies of neural networks for purpose of edge detection. The last part of the thesis is dedicated to evaluating and measuring accuracy values of neural network.

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CHEN, DUNG-AN, and 陳東安. "Line Restoring Algorithm for PCB Detection Based on Canny Edge Detection." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/87459399152958914920.

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碩士<br>靜宜大學<br>資訊傳播工程學系<br>104<br>the PCB business still relies on a human when it comes to countingPCBs, and it’s a waste of human resources, therefore this research provided a PCB counting system that’s base on computer vision, in order to save time and improve efficiency. This research used a camera to take a picture of a pile of PCBs, then sent it to a computer for image analysis, by counting the straight lines in the image, the system can tell how many PCBs are in the picture, and return the result to the user. This research provided two algorithms for the PCB counting system; the first on

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Wang, Chun-Chieh, and 王軍傑. "Feature-Based Disconnected Object Contour Linker Based on Canny Edge detector and Genetic Algorithm." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/24147281435499260108.

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碩士<br>國立中興大學<br>資訊管理學系所<br>100<br>Object contour detection is very important in image processing. There are many edge and object contour detectors that have been proposed, such as, Canny edge detector, ACM, and level set methods. However, those detection methods have some drawbacks which lead to the incomplete edge and object contours. More precisely, in the ACM and level set methods, the initial contour of object has to be specified by a user in advance, and the segmentation results highly depend on the given initial contour. Besides, the ACM and level set methods are significantly sensitive

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Wan-TingWeng and 翁琬婷. "High Efficient VLSI Implementation of Canny Edge Detection." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6898t2.

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王以碩. "Improved Canny Edge Detection Method for Depth Image." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/98871763194003679210.

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碩士<br>逢甲大學<br>資訊工程學系<br>103<br>Edge detection in 3D depth images is more vital and useful than that in 2D images for the following intermediate-level and high-level vision, such as segmentation and shape reconstruction. Kinect, a lower-cost depth camera, it has been concern for many scholars. But depth image is often not very accurate and stable due to depth holes and inconsistent depth values. This paper in order to improve the effectiveness of Kinect image processing, will study the edge detection for depth image. Now, the technology of edge detection has been very ripe, and Canny edge dete

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Hsieh, Ming-Han, and 謝明翰. "A modified Canny Edge Detection Based on the Significance of Multiresolution." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93994301371360452389.

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Hung, Jing-Yao, and 洪竟堯. "Design of Edge Defect Detection Algorithm." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/58219765364218632469.

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碩士<br>國立交通大學<br>工業工程與管理學系<br>98<br>There are plenty of consumers using contact lenses to correct vision in recent years. Due to the contact lens will contact with users eyeball directly, the quality of contact lens has to be assured not to influence users eye health. Contact lens was generally inspected by quality inspectors in the past. However, owing to the diversity of individual subjective judgment and fatigue situation, there is no consistent inspection standard. The lens quality cannot always be guaranteed. Recently, with the development of auto-optical inspection (AOI) technology, s

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Liu, Hsu-Huan, and 劉旭桓. "DESIGN OF A SCAN CONVERTER USING THE CUBIC CONVOLUTION INTERPOLATION WITH CANNY EDGE DETECTION." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/22259197825452981698.

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碩士<br>大同大學<br>通訊工程研究所<br>98<br>With the increasing use of digital monitor technique, requirements for image interpolation have become more critical. Especially, the development of LCD screen sizes has grown up. Conventional interpolation methods have several drawbacks, such as blurring or blocky effects. Many edge detect methods have been widely used to avoid these problems but are notorious for high complexity and cost. Therefore, in order to enhance quality of image. In the thesis, we used Canny edge detection to fined image edge, the part detected transforming by nearest neighbor interpolat

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Yu, Yong-jian, and 余勇健. "Combination of a novel occlusion filling with Canny edge detection segmentation for stereo depth recovery." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/18841363624453208736.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>105<br>Stereo vision is an important part of computer vision and has been research hotspot for decades. Binocular stereo vision is actually the process of mimicking human vision to obtain depth information and reconstruct 3D scenes, its application ranges from robot navigation, industrial measurement to medical treatment and military affairs, acquiring dense accurate depth maps is the main concern in our paper. So far, the technical problems of occlusion regions, depth inconsistent and weak texture are the main obstacles in gaining accurate depth maps. Our paper pr

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Thies, Paul R. "Development of a direction oriented edge detection algorithm." 1987. http://catalog.hathitrust.org/api/volumes/oclc/17252398.html.

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KAUR, GURPREET. "EDGE DETECTION IN DIGITAL IMAGES USING EVOLUTIONARY ALGORITHM." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14893.

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An edge is an abrupt change in intensity that indicates the boundary between two adjacent regions. Its detection is the fundamental operation in image processing. Evolutionary algorithms can be used for efficient results. Evolutionary algorithms are a set of algorithms that are inspired from nature. Various algorithms have been developed in the past few years. Artificial Bee Colony algorithm is one such algorithm that copies the behavior of bees in the nature. It is used for detection of edges in the gray scale digital images. It uses the concept of 3 types of bees in the bee colony – Employee

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Chia-Hsiung, Chen. "Edge Detection Algorithm and its Gaussian Smoothing Filter Design." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2001200618482500.

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Chen, Chia-Hsiung, and 陳嘉雄. "Edge Detection Algorithm and its Gaussian Smoothing Filter Design." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/65312551668687735767.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>94<br>A new edge detection algorithm is proposed in this Thesis. Inspired by the Color Filter Array (CFA) interpolation kernels, we design two other kernels for the algorithm to perform Gaussian-like smoothing and Laplacian-like edge detection directly on a Bayer-patterned image. Also, the proposed algorithm can be easily extended to existing color and grayscale images. That is, it is capable of detecting edges in a Bayer-patterned, a color, or a grayscale image. Benefits of performing edge detection on a Bayer-patterned image include the computation saving of the i

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Chu, Lu Wen, and 呂文助. "The study of Canny edge detection method and morphological segmentation method to make the curves of glottal area." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/94561825139261301807.

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碩士<br>國立臺灣師範大學<br>機電科技研究所<br>99<br>Glottis servers a very major function in animals and its dynamic change is also a critical subject in physiological research. This research aims to analyze the image processing methods for glottis by using Matlab computer programming tools to estimate the glottal area and to plot the correspondent charts. We hope to simplify the manual processing of targeting glottal area in digital image and the calculation of area. The study employs Canny edge detection method and morphological segmentation method to make the curves of glottal area. The results show that th

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Ciou, Sin-Jhe, and 邱信哲. "Out-of-focus Image Restore Algorithm Based on Edge Detection." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/70782221572863021919.

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碩士<br>國立東華大學<br>電子工程研究所<br>98<br>In order to restore the blind image to the sharp image, the first step is to identify the unknown point spread function (PSF). The algorithm for searching the PSF model of out-of-focus image is very important. In this thesis, an algorithm based on the edge detection method is proposed to identify the PSF of the out-of-focus image for solving the problems described above. The thesis uses the particle swarm optimization (PSO) to search the parameter of the PSF, and then the Wiener filter with the identified PSF is utilized to restore the out-of-focus image to

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李芝儀. "Research on Algorithm of 3D Medical Imaging Surface Edge Detection." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ynp9gh.

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"A novel sub-pixel edge detection algorithm: with applications to super-resolution and edge sharpening." 2013. http://library.cuhk.edu.hk/record=b5884269.

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Lee, Hiu Fung.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2013.<br>Includes bibliographical references (leaves 80-82).<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Abstracts also in Chinese.

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Lai, Yang-Chih, and 賴垟志. "Blind Image Deconvolution Algorithm Based on Edge Detection and its Variation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/31122322334721034663.

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碩士<br>國立東華大學<br>電機工程學系<br>99<br>To identify unknown point spread function (PSF) parameter and restore blurred image are two important issues of blind image deconvolution. To restore a good image, the first step is to identify the unknown PSF. Based on edge detection and variation, this thesis propses an intelligent search algorithm to identify the PSF of the blurred image. The thesis choose Gaussian blur image and out-of-focus blur image for further research, which utilized the particle swarm optimization algorithm to search for the unknown PSF, and then the Wiener filter with the identifi

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Ipson, Stanley S., Ali K. Benkhalil, Sergei I. Zharkov, Valentina V. Zharkova, J. Aboudarham, and R. D. Bentley. "A full disk image standardisation of the synoptic solar observations at the Meudon observatory." 2003. http://hdl.handle.net/10454/3053.

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No<br>Robust techniques are developed to put the H and Ca K line full-disk images taken at the Meudon Observatory into a standardised form of a `virtual solar image'. The techniques include limb fitting, removal of geometrical distortion, centre position and size standardisation and intensity normalisation. The limb fitting starts with an initial estimate of the solar centre using raw 12-bit image data and then applies a Canny edge-detection routine. Candidate edge points for the limb are selected using a histogram based method and the chosen points fitted to a quadratic function by minimising

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Leng, Jia-Wei, and 冷家偉. "An Edge Detection Algorithm for the Fast Decision of H.264 Intra Mode." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/4wx4n7.

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碩士<br>國立臺北科技大學<br>電腦與通訊研究所<br>100<br>H.264 is the newest video coding standard. In order to achieve much higher coding efficiency than that of previously published standards, such as MPEG-1/2/4, H.261 and H.263, H.264 codec applies more complicated approaches in the coding procedure, such as integer Discrete Cosine Transformation, intra prediction, quarter-sample-accurate motion estimation, multiple reference frame and variable block-size, in inter prediction mode. Whiling having a better performance, the H.264 comes with the cost of highly increased complexity. Among all the processes, the in

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Jia, W. "Number Plate Detection (NPD) algorithm." Thesis, 2006. http://hdl.handle.net/10453/37716.

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University of Technology, Sydney. Faculty of Information Technology.<br>Automatic Number Plate Recognition (ANPR) is an important Intelligent Transportation System (ITS) technology, which distinguishes each vehicle as unique by recognising the characters in their number plates via image analysis and pattern recognition techniques. In an ANPR system, the most crucial part is number plate detection. The research presented in this thesis focuses on the detection mechanism and will rely on a third-party Optical Character Recognition (OCR) software for character recognition. Number Plate Detection

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Hsiao-WeiHo and 何孝威. "A Fast Local Stereo Matching Algorithm with Simple Edge Detection and Its VLSI Implementation." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/z5d2em.

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碩士<br>國立成功大學<br>電機工程學系<br>102<br>In this thesis, a fast local stereo matching algorithm and its VLSI implementation are proposed. Unlike the traditional stereo matching methods which process all pixels in the image, the proposed algorithm only processed a part of the image to reduce the computation complexity. The proposed algorithm generates a sparse depth map by a skip technology. For each image, this method estimates the skip region in two directions and generates two rough depth maps. We compare these two rough depth maps to find the edge of depth map. Then, re-compute the depth informatio

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Shun-bin, Jhuang, and 莊順斌. "A Product Appearance Inspection System Based On Modified Sobel Edge Detection And Density-Based Clustering Algorithm Taking Car-License Recognition As Example." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/21312940352322646640.

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碩士<br>國立屏東科技大學<br>資訊管理系<br>93<br>License Plate Recognition（LPR）is a complex and important research issue. In this issue, there are many techniques and theories applied for solving this problem. For an image recognition system , edge detection is an extremely significant pre-processing step and thus we design a novel edge detection approach from modifying traditional Sobel edge detection method. The modified Sobel edge detection is suitable for processing images with colorful objects and backgrounds. Therefore, we develop a product appearance inspection system based on it. Moreover, we adopt de

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