Printing colour pictures in a TEX document needs a driver program that is able to exploit the capabilities of a colour device. The driver must separate the colours of the picture into the basic colours used by the colour model supported by the output device. This was the purpose to develop the dvi djc-drivers for the Hewlett Packard inkjet printers and to upgrade BMZFONT to version 3.0. The sol...

Inclusive bottomonium hadroproduction at the Tevatron is firstly examined in a Monte Carlo framework with the colour-octet mechanism implemented in the event generation. We extract some NRQCD colour-octet matrix elements relevant for Υ(1S) hadroproduction. Remarkably we find a quite small contribution (compatible with zero) from feeddown of χ bJ states produced through the colour-octet mechanis...

Segmentation of a region of interest is an important pre-processing step for many colour image analysis techniques. Similarly segmentation of plant in digital images is an important preprocessing step in phenotying plants by image analysis. In this paper we present an analytical study to statistically determine the suitability of colour space representation of an image to best detect plant pixe...

There are two broad classes of colour constancy algorithms: statistical and physics-based. The former attempt to correlate the statistics of the colours in an image with statistical knowledge about light and surfaces. If there is good colour diversity in a scene then the statistical approach often works well. The latter, physics-based algorithms are founded on an understanding of how physical p...

Colour vision and colour signals are important to aquatic animals, but light scattering and absorption by water distorts spectral stimuli. To investigate the performance of colour vision in water, and to suggest how photoreceptor spectral sensitivities and body colours might evolve for visual communication, we model the effects of changes in viewing distance and depth on the appearance of fish ...

Colour is an important and useful feature for object tracking and recognition in computer vision. However, it has the difficulty that the colour of the object changes if the illuminant colour changes. But under known illuminant colour it becomes a robust feature. There are more and more computer vision applications tracking humans, for example in interfaces for human computer interaction or aut...

It is shown that colour can only be defined on gauge invariant states. Since the ability to associate colour with constituent quarks is an integral part of the constituent quark model, this means that, if we want to extract constituent quarks from QCD, we need to dress Lagrangian quarks with gluons so that the result is gauge invariant. We further prove that gauge fixings can be used to constru...

The improvement of the accuracy of image query retrieval used image classification technique. Image classification is well known technique of supervised learning. The improved method of image classification increases the working efficiency of image query retrieval. For the improvements of classification technique we used RBF neural network function for better prediction of feature used in image...

REFERENCES [1] D.L. MacAdam, “The theory of the maximum visual efficiency of colour materials”, J. Opt. Soc. Am, 25, 249 (1935). [2] D.L. MacAdam, “Maximum visual efficiency of coloured materials”, J. Opt. Soc. Am., 25, 316 (1935). [3] F. Martínez-Verdú, E. Perales, E. Chorro, D. de Fez, V. Viqueira, and E. Gilabert, “Computation and visualization of the MacAdam limits for any lightness, hue an...