Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"Hough Transform"”.
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Form processing with the Hough transform
A form document processing system based on the Hough transform (HT) is developed. It performs form identification and form registration. For form identification, HT is applied off-line to master forms to calculate form features and build-up the feature database, and it is performed on-line for the …
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Automatic Car Registration Plate Recognition Using the Hough Transform
… on identifying the plate characters by using the Hough transform. However, the proposed recognition system can be used in conjunction with a tag system for higher security access control. The automatic registration plate recognition could also have considerable potential in a wide range of …
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Using the Hough transform for analysis of images containing straight lines
The Hough transform is a means for finding straight lines in an image. Since it is robust and efficient it is widely used in machine vision systems. The Hough transform has been shown to be a special case of the Radon transform. As a result, the Hough transform can be inverted using the inverse …
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Target Tracking in Multi-Static Active Sonar Systems Using Dynamic Programming and Hough Transform
… Organizing Maps, Dynamic Programming and the Hough transform are combined to produce tracks of possible targets’ paths and estimate of targets’ locations. Evaluation of the performance of the tracking algorithm is performed using three types of simulations and a set of real data obtained from …
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Investigation into the use of the Microsoft Kinect and the Hough transform for mobile robotics
… every Kinect should be fully calibrated. The transformation from the raw data to a point cloud is also investigated. Then, the Hough transform is presented in its 2-dimensional form. The Hough transform is a line extraction algorithm which uses a voting system. It is then compared to the …
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Vision systems for a mobile robot based on line detection using the Hough Transform and artificial neural networks.
… lines in images captured by a robot using the Hough transform and artificial neural networks as core algorithms. The Hough transform is a robust method for detection of basic features (Boyce et al 1987). However, it is so computationally demanding that it is not commonly used in real time …
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3D Hallway Modeling Using a Single Image
… camera information. Second, a perspective based Hough transform algorithm is proposed to detect vertical lines in order to determine the edges of the corridor. Finally, issues in real-time implementation on a smartphone are discussed. Experimental results are provided to validate the proposed …
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Template reduction of feature point models for rigid objects and application to tracking in microscope images.
… state space. An algorithm, based on the Hough transform, has been developed to achieve this for discrete shapes, i.e. sets of points, projected in an image when the state space is bounded. An extended discussion on particle filters, that serves as an introduction to the topic, is …
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Testing general relativity using millimeter wavelength radio interferometry of Sgr A*
General relativity, though widely accepted in the weak-field limit, is difficult to test in the strong-field regime. Millimeter wavelength VLBI offers a unique opportunity to resolve the black hole structure on event-horizon scales. The ability of millimeter wavelength VLBI observations of Sgr A* …
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Detection of Tubes in Radiographs Using Canny Edge Detection and Progressive Hough Transforms
… of edges, followed by a windowed variant of the Hough transform, a common line detection algorithm, which is used to identify potential tube pixels. Our method employs repeated applications of a parallel-line-specific Hough transform to the same image with progressively lower thresholds for …
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Mathematical Imaging Tools in Cancer Research - From Mitosis Analysis to Sparse Regularisation
… both automated mitotic cell detection with the Hough transform and subsequent cell tracking by a tailor-made level-set method in order to obtain statistics on length of mitosis and cell fates. The proposed image analysis pipeline is deployed in a MATLAB software package called MitosisAnalyser. …
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Novel data-processing techniques for signal extraction in Project 8
… experiments. This thesis explores the use of the Hough Transform as a tool in data processing in Project 8 and discusses its utility and function generally.
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Characterization of hydrides and delayed hydride cracking in zirconium alloys
… proposed. It is a modification of the standard Hough transform, which is an extension of the Hough transform widely used in the line detection of EBSD patterns Finally, a basic model of hydrogen migration is built using ABAQUS, which is a mature finite element package with tested modeling …
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Recognition and identification of form document layouts
… structures from form documents. Compared with Hough transform, the pixel tracing algorithm requires less computation. This algorithm has been tested on 50 different table forms. It effectively extracts all the line information required for the hierarchical tree representation, represents the …
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An algorithm for a dollar bill recognition system
… for a dollar bill recognition system. Although this thesis describes it in detail for the specific application of designing a dollar bill recognition system, the algorithm is quite general and can be applied to a variety of pattern recognition problems. The scheme operates on the image of …
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Uso da transformada de Hough na vetorização de moldes e outras aplicações
… In this work a methodology that applies the Hough Transform for equations of first and second degrees is proposed, implemented and tested. This system can be used in several other applications to identify forms. In some uses as in the hardness measure and the quality control it presents an …
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Analysis of grey level weighted Hough transforms
The Hough transform is a well known method for detecting lines in digital imagery. The results of the transform may be termed accurate if the lines detected correspond to lines occurring in the digital image. The accuracy of the transform is affected by the manner in which the transform is …
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