IMPROVEMENTS TO SPATIAL FREQUENCY AND CONTRAST SENSITIVITY TEST CHART AND PROTOCOL

摘要

process and apparatus for measuring and quantifying generalized visual sensitivity in terms of contrast sensitivity and spatial frequency response and recognition of the eye and the brain of forms or alignment of images. several areas of information are significantly different (a, b, c,...1, 2, 3), each of these information areas are delimited by a marker in order to avoid the patient or system to search for an image and to identify the range of information to the query image. information areas (a, b, c,...1, 2, 3) can contain a grid with parallel light and dark zones, which are essentially linear in the contrast levels and / or spatial frequency or size of occurrence, which is different for different areas of information n.each of the successive information areas which present a background luminance average is equal to the average of the average luminance of the area information.