Fundamentals of Spatial Vision Free Essay Example, 2500 words

The images may be simple as well as the complex ones. The visual system deals differently with these two different types of images. Different visual information is being passed on forward at different spatial scales. When we see a cat, for example, our visual system functions in such a manner that a coarse spatial scale is conveyed to perceive the general shape of the cat but a fine scale for the hair of the cat. Different scales have different sized spatial fields. These visual fields contain superimposed receptive fields. The receptive fields are different in sizes but they are tuned to the different spatial frequency. That is how they collect even the discrete information of the image and convey them at different spatial scales. If the stimulation from the excitatory region of the retinal ganglion cell matches to that from its inhibitory surround, the effects are canceled out. During the synthesis of the square wave, the sine waves combine in many different patterns, the result i s the production of different types of images. The square waves have sharp edges and flat plateaus, while the sine waves don t have sharp edges and they have ripples. We will write a custom essay sample on Fundamentals of Spatial Vision or any topic specifically for you Only $17.96 $11.86/page