Visual Perception
In the study of visual perception, sinusoidal gratings are frequently used to probe the capabilities of the visual system. In these stimuli, spatial frequency is expressed as the number of cycles per degree of visual angle. Sine-wave gratings also differ from one another in amplitude (the magnitude of difference in intensity between light and dark stripes), and angle.
Read more about this topic: Spatial Frequency
Famous quotes containing the words visual and/or perception:
“Nowadays people’s visual imagination is so much more sophisticated, so much more developed, particularly in young people, that now you can make an image which just slightly suggests something, they can make of it what they will.”
—Robert Doisneau (b. 1912)
“The essence of greatness is the perception that virtue is enough.”
—Ralph Waldo Emerson (1803–1882)