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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Pattern recognition for automated die bonding

曾昭明, Tsang, Chiu-ming. January 1982 (has links)
published_or_final_version / Electrical Engineering / Master / Master of Philosophy
162

Matching patterns of line segments by affine-invariant area features

陳浩邦, Chan, Hau-bang, Bernard. January 2002 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
163

Dimensionality reduction in the recognition of patterns for electric power systems

Fok, Danny Sik-Kwan. January 1981 (has links)
No description available.
164

A method for human identification using static, activity-specific parameters

Johnson, Amos Y., Jr. 05 1900 (has links)
No description available.
165

Surface extraction from coordinate measurement data to facilitate dimensional inspection

Lloyd, Timothy Brian 05 1900 (has links)
No description available.
166

Vision-based recognition of actions using context

Moore, Darnell Janssen 05 1900 (has links)
No description available.
167

High speed target tracking using Kalman filter and partial window imaging

Hawkins, Mikhel E. 05 1900 (has links)
No description available.
168

An experimental investigation on dynamic vision guided pick-up of moving objects

Downs, James Douglas 08 1900 (has links)
No description available.
169

Selection and extraction of local geometric features for two dimensional model-based object recognition

Ditzenberger, David A. January 1992 (has links)
A topic of computer vision that has been recently studied by a substantial number of scientists is the recognition of objects in digitized gray scale images. The primary goal of model-based object recognition research is the efficient and precise matching of features extracted from sensory data with the corresponding features in an object model database. A source of difficulty during the feature extraction is the determination and representation of pertinent attributes from the sensory data of the objects in the image. In addition, features which are visible from a single vantage point are not usually adequate for the unique identification of an object and its orientation. This paper will describe a regimen that can be used to address these problems. Image preprocessing such as edge detection, image thinning, thresholding, etc., will first be addressed. This will be followed by an in depth discussion that will center upon the extraction of local geometric feature vectors and the hypothesis-verification model used for two dimensional object recognition. / Department of Computer Science
170

Digital imaging of the retina

Spencer, Timothy January 1992 (has links)
In this study, fluorescein angiograms of the ocular fundus have been digitised to enable them to be processed and analysed by computer. A fully automated technique for counting microaneurysms (MA) in these images was developed with a view to producing an objective, accurate and highly repeatable way of quantifying these lesions. Prior to any other image processing, a number of pre-processing stages were applied in order to compensate for non-uniformaties and to remove the background fluorescence component present in all the images. Matched filters modelled on two-dimensional Gaussian distributions were employed to detect MA in the 'shade-corrected' images. A binary image representation of the vascular network was constructed. This 'vessel mask', used in conjunction with the original match-filtered images, enabled MA to be detected by grey-level thresholding the filtered images. The resulting binary objects could then be counted by the computer as MA. The automated technique was assessed by comparing the computer's results for six fluorescein angiograms with MA counts obtained by ophthalmologists analysing both analogue and digital images. The performance of both man and machine were judged with respect to 'gold standards' compiled from prints of the original negatives. The best results were obtained by the clinicians analysing the analogue prints, although they differed greatly in their ability to detect microaneurysms. The computer performed better than the clinicians when they were counting MA in the digital images and produced highly repeatable results. To improve the performance of the automated technique, images were captured at approximately four times the previous spatial resolution and a smaller area of each image was analysed. Additionally, more complex image-processing techniques were employed to increase the accuracy of the computer analysis. Although the performance of the automated technique was improved, the computer results only matched those of the clinicians' analogue analyses for two of the images.

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