ÐIn this paper, an Inverse Hough Transform algorithm is proposed. This algorithm reconstructs correctly the original image, using only the data of the Hough Transform space and it is applicable to any binary image. As a first application, the Inverse Hough Transform algorithm is used for straight-line detection and filtering. The lines are detected not just as continuous straight lines, which i...

Clear eye lens is responsible for correct vision. Ageing effect acquires opacity at structure causing foggy or blurred It termed as cataract. This may become cause of permanent blindness if remain unidentified and untreated. Due to hazards change in environment adoption sluggish lifestyle many diseases like cataract are becoming universal challenge health organization over the world. Lack medic...

v LIST OF TABLES vi LIST OF FIGURES viii CHAPTER 1. nslTRODUCTION 1 1.1 Motivation and Problem Statement 1 1.2 Previous Research 4 1.3 Thesis Organization 5 2. MATHEMATICAL METHODS FOR PREPROCESSING AND IMPLEMENTATION WITH THE CUSTOMIZED HOUGH TRANSFORM 7 2.

A new branch of Hough Transform algorithms, called probabilistic Hough Transforms, has been actively developed in recent years. One of the rst was a new and eecient probabilistic version of the Hough Transform for curve detection, the Randomized Hough Transform (RHT). The RHT picks n pixels from an edge image by random sampling to solve n parameters of a curve and then accumulates only one cell...

Replacing the Hough calculation of the trigonomeric functions, sine and cos0,by the piece-wise linear Hough function(PLH), the basic cost for the sine , cose and the multiplications is removed. The PLH function is directly introduced from the usual Hough function. The PLH function inherits the basic properties of the usual Hough function from the view point to extract the line patterns from the...

The Discriminative Generalized Hough Transform (DGHT) is a method for object localization, which combines the standard Generalized Hough Transform (GHT) with a discriminative training technique. In this setup the aim of the discriminative training is to equip the models used in the GHT with individual model point weights such that the localization error in the GHT becomes minimal. In this paper...

This paper studies the use of the generalised Hough transform to locate objects possessing concavities. Hhen locating objects with internal symmetries, ambiguities can arise which nay not be resolvable in the presence of occlusions. On the other hand concavities can help to lake object location more accurate. The boundary orientation distribution can be used to analyse the situation: it shows t...