Developments in multimedia technology, increasing number of image retrieval functions and capabilities has led to the rapid growth of CBIR techniques. Colour histogram could be compared in terms of speed and efficiency. We have presented a modified approach based on a composite colour image histogram. A major research perspective in CBIR emphasize on matching similar objects based on shape, col...

In this paper, we present a method to represent achromatic and chromatic image signals independently for content-based image indexing and retrieval for image database applications. Starting from an opponent colour representation, human colour vision theories and modern digital signal processing technologies are applied to develop a compact and computationally e-cient visual appearance model for...

Based on a model of transverse chromatic aberration (TCA) of the eye and perceptual effects previously discussed by the same author, it was predicted that colour induced binocular depth perception (chromostereopsis) is possible from images containing red or blue along with achromatic information (grey and black); that the direction of the perceived depth from certain colours should differ for t...

The purpose of this work is to analyse what happens to the surface information when the image resolution is modified. We deduce how the same surface appears if seen from different distances. Using 4-source Colour Photometric Stereo, which provides the surface shape and colour information, a method for predicting how surface texture looks like when changing the distance of the camera is presente...

The study investigates consumers’ preference for cowpea reflected in the Nigerian markets through price discounts and premiums that consumers pay for different cowpea characteristics. The price data used for this study were obtained through a market survey. A common data collection protocol was employed. Every month, between October 2009 to December 2010, five cowpea samples per seller were bou...

Object tracking in video sequences is a challenging task and has various applications. We review particle filtering techniques for tracking single and multiple moving objects in video sequences, by using different features such as colour, shape, motion, edge and sound. Pros and cons of these algorithms are discussed along with difficulties that have to be overcome. Results of a particular parti...

Genetic programming is used to automatically synthesize procedural textures for 3D surfaces. The GP system evolves textures with similar colour and surface characteristics as training textures sampled on 3D models. The texture language includes mathematical operators, colour and noise functions, as well as surface information for the point being rendered, such as coordinates, normal, and gradie...

Face Detection for Skintone Images Using Wavelet and Texture Features Written by Administrator Wednesday, 16 March 2011 09:26 Last Updated Monday, 21 March 2011 06:50 Images with Skin-tone regions pose new challenges in face detection problem. Paper presents a novel detection algorithm that uses a combination of colour spaces and edgedetection for segmentation followed by texture feature analy...

Face Detection for Skintone Images Using Wavelet and Texture Features Written by Administrator Wednesday, 16 March 2011 09:26 Last Updated Monday, 21 March 2011 06:50 Images with Skin-tone regions pose new challenges in face detection problem. Paper presents a novel detection algorithm that uses a combination of colour spaces and edgedetection for segmentation followed by texture feature analy...

This paper deals with some techniques used to recognise bovine products by use of image processing, and in particular the location of a liver within a pile of eyiscera by use of a combination of colour and texture analysis.