'Color from motion' describes the perception of a spread of subjective color over achromatic regions seen as moving. The effect can be produced in a display of multiple frames shown in quick succession, each frame consisting of a fixed, random placement of colored dots on a high-luminance white background with color assignments of some dots, but not dot locations, changing from frame to frame. ...

Numerical information can be perceived at multiple levels of abstraction (e.g., one bird, or a flock of birds). The unit of input for numerosity perception can therefore involve a discrete object, or a set of objects grouped by shared features (e.g., color). Here we examine how the mere co-occurrence of objects shapes numerosity perception. Across three between-subjects experiments, observers v...

The Beltrami geometrical framework for scale-space flows is generalized to nontrivial color space geometries and implemented in analysis and processing of color images. We demonstrate how various models of color perception, interpreted as geometries of the color space, result in different enhanced processing schemes.

Starting with the experiments of Ramachandran and Gregory (Nature, 275, 55-56, 1978), several psychophysical studies in apparent motion (AM) have established that the perception of motion is significantly impaired at equiluminance. Still debated, however, is whether color alone can resolve ambiguities in AM. We report here on several psychophysical experiments, the quantitative results of which...

Through laboratory experiments the variation of noise annoyance caused by road traffic noise with LAeq.20sec of 35, 45, 55 and 65dB under different visual conditions in study and living rooms was explored. The experimental result shows that in the indoor environment the influence of brightness perception on noise annoyance caused by road traffic noise was more obvious, and the effect of color p...

Webster’s asserts that color is “a phenomenon of light or visual perception that enables one to differentiate otherwise identical objects,” and then goes on to say that the Latin root is celare, “to conceal.” It’s a fine definition, because human perception of color is seamless to the extent that it conceals from us almost every causal detail. This talk will discuss common sources of light, the...

This paper confer the reasons for color vision defects in human eye. This paper also discuss the design and development system for the people who are having problem in their visual system, such as color blindness, low vision, or visual field defects. A new model has been proposed that examine the color vision, vision field defects and visual acuity. Model has proposed that is working on the per...

The Whorf hypothesis holds that we view the world filtered through the semantic categories of our native language. Over the years, consensus has oscillated between embrace and dismissal of this hypothesis. Here, we review recent findings on the naming and perception of color, and argue that in this semantic domain the Whorf hypothesis is half right, in two different ways: (1) language influence...

CIELAB is commonly used in design as it provides a simple method for approximating color difference. However, these approximations model color perception under laboratory conditions, with correctly calibrated displays and carefully constrained viewing environments that are not reflective of complexity of viewing conditions encountered in the real world. In this paper, we present a data-driven e...

among the different classes of physical properties of foods, color is considered the most important visual attribute in quality perception. consumers tend to associate color with quality due to its good correlation with physical, chemical and sensorial evaluations of food quality. this study used an inexpensive method to predict sweet cherries color parameters by combining image processing and ...