Vision and art the biology of seeing pdf download

So, for example, a very low-contrast or equiluminant moving object in any of these media will seem to move more slowly or less clearly than it actually does, and it will seem less three-dimensional than a comparable object that has luminance contrast. These technologies are all flat, like painting, so they use the same kinds of cues perspective, shading, and occlusion to give an illusory sense of depth. They also have the same problem as paintings in that stereopsis tells the viewer that the image is flat. This image is a magnification of the pixels making up the picture on a color television. Under normal viewing conditions the eye cannot resolve the individual pixels, so the colors blend.

Visual perception is the ability to interpret the surrounding environment using light in the visible spectrum reflected by the objects in the environment. The resulting perception is also known as visual perception, eyesight , sight , or vision adjectival form : visual , optical , or ocular. The various physiological components involved in vision are referred to collectively as the visual system , and are the focus of much research in linguistics , psychology , cognitive science , neuroscience , and molecular biology , collectively referred to as vision science. In humans, and a number of other mammals light enters the eye through the cornea which then the lens focuses light onto the light-sensitive membrane in the back of the eye, called the retina. The retina serves as a transducer for the conversion of light into neuronal signals.