INTRODUCTION .......................................... 403 COLOR VISION .......................................... 405 RED AND GREEN PIGMENTS ................................. 406 Psychophysics of Red~Green Color Blindness ....................... 406 Molecular Genetics of RedIGreen Color Blindness .................... 407 Variation in Normal Color Vision .............................. 409 Blue...

Color vision deficiency, most of the time remains an unnoticed problem; even many doctors/health professionals do not know the severity of their color vision deficiency and their disability. Some common difficulties reported by medical practitioners and students of health sciences were in recognizing- widespread body color changes (pallor, cyanosis, icterus, rashes, erythema of skin), colorful ...

Color vision deficiency, most of the time remains an unnoticed problem; although it is not very rare. The faculty of appreciation of color is essential for our smooth daily activities. Unfortunately, even many doctors do not know the severity of their color vision deficiency and tend to assume it as slight, and a few, as in the general population, do not know about their disability. Some common...

Most of the color image processing algorithms do not consider the non-linearity of human vision, and the limitations of the human vision likecapability to discriminate between two similar colors and maximum number of colors human vision can respond to. In this paper, the nonlinearity and physiological limitations of human vision have been used for sampling the RGB color space. The large redunda...

We propose a color vision model that can be used to predict color appearance in mesopic vision as well as photopic and scotopic vision. It is based on a two-stage model which consists of the cone and opponent stages and it assumes rod intrusion at the opponent stage. The model has the following features to describe the color appearance in mesopic vision. First, it includes a gradual and nonline...

The objective of this project is to establish a practical application of the concept of Color Universal Design (CUD), the design that is recognizable to all color vision types. In our research, we looked for a clearly distinguishable combination of hues of four colors – black, red, green, and blue – which are frequently used in these circumstances. Red-green confusion people do not confuse all ...

This paper presents a surveillance system that detects and recognizes people in indoor scenes. To distinguish between different people, color histograms on a perceptually uniform color space are used. The goal here is to associate a sequence showing a person leaving a room with the previously recorded sequence showing that same person entering.

Thirty years ago virtually everything known about primate color vision derived from psychophysical studies of normal and color-defective humans and from physiological investigations of the visual system of the macaque monkey, the most popular of human surrogates for this purpose. The years since have witnessed much progress toward the goal of understanding this remarkable feature of primate vis...

I account for a large fraction of the data transmitted on the Internet (1). The sizes of these images, when compressed for storage and transmission, depend on their spatial resolution (number of pixels) and color resolution (number of color quantization levels). Existing image compression methods such as JPEG take into account human visual perception but assume an individual with normal color v...

tion of these two colors to the reproduction process allows Hexachrome to exceed the RGB spectrum in all but the green area of the spectrum (see Figure 1.1). Through this system, offset printers can now reproduce colors beyond the gamut of the monitor and even into the fluorescent and pastel range ( Jeffrey, 1995 p. 46). In addition to this, Hexachrome can accurately reproduce 90% of all PANTON...