Contrast ratios are an important concept in graphic composition and human perception. They refer to the variation in luminance between the lightest and darkest parts of a graphical interface. A higher contrast level means that there is a larger disparity between bright and dim areas, which can substantially affect https://maria929a6p.wikitelevisions.com/8001507/grasping_the_influence_of_brightness_contrast_metrics_on_optical_resolution_and_viewer_cognition