carotenoids are the main pigments of tomato, of which 93% is lycopene. lycopene has desirable physiological effects in human sush as cancer prevention. recent years, because of harmful side effects of synthetic colouring agents used in food products, employing of natural food colouring agents has become very important. in this research firstly, solvent extraction method was used for tomato caro...

Noise in environmental variables is often described as 'coloured', where colour describes the exponent beta of the scaling relationship between the amplitude of variability and its frequency of occurrence (1/f(beta)). Different environments are known to have different colours and models have shown that colour can have important impacts upon population persistence and dynamics. This study advanc...

This paper describes the application of human visual models in (i) defining a visually uniform colour representation space and (ii) the formulation of visually weighted Kalman filtering for image restoration. The former being useful in colour image quantisation and compression. For (i), the uniformity of chromaticity differences at the ouptut of Frei ’s colour vision model [3] is tested and com...

Although colour vision has common characteristics across humans, there is no universal agreement on how the colour space should be segmented to represent the names assigned by observers from different cultural backgrounds. To this respect, anthropologists and linguists have identified a limited set of eleven universal colour categories (names), that are present in most evolved languages, which ...

The Horridge template model1 is an empirical motion detection model inspired by insect vision. This model has been successfully implemented on several micro-sensor VLSI chips26 using greyscale pixels. The template model is based on movement of detected edges rather than whole objects, which facilitates simple tracking techniques. Simple tracking algorithms developed by Nguyen7 have been success...

This thesis proposes a novel method to combine the colour and the texture for colour texture segmentation. The objective of this research work is to derive a framework for colour texture segmentation and to determine the contribution of colour in colour texture analysis. The colour texture processing is based on the feature extraction from colour-textured images. The texture features were obtai...

This study provides a replication of Boynton and Olson's (1990) work (Vision Research, 30, pp. 1311-1317), but using a more extensive model of colour space--Munsell as distinct from OSA-UCS. It involved 20 subjects in a total of 17,840 observations of 446 colours, in which monolexemic naming and response times were recorded. The results clearly differentiate between basic and non,basic colour c...

      Background: Computed tomography scans (CT scan) and X-rays are used to diagnose paediatric maxillary sinusitis. This study aimed at exploring the diagnostic value of the conventional and colour Doppler ultrasounds and their specific findings in cases of paediatric sinusitis.    Methods: A total of 60 children diagnosed with sinusitis were included in this s...

Computer vision based face and gesture recognition will allow future human computer interfaces to be more intuitive and user-friendly than traditional interfaces. A crucial processing step for the success of such systems is robust detection and tracking of faces and hands, which is frequently done by combining complementary cues, e.g., motion, shape, and colour. Skin colour is often used becaus...

Recently, the field of predicting phenotypes of externally visible characteristics (EVCs) from DNA genotypes with the final aim of concentrating police investigations to find persons completely unknown to investigating authorities, also referred to as Forensic DNA Phenotyping (FDP), has started to become established in forensic biology. We previously developed and forensically validated the Iri...