P-48: A New Approach Toward Visual Clarity Assessment Using Perceptual Contrast Length

Contrast ratio is one of the most important performance parameters used to evaluate visual clarity of displays. However, conventionally-used absolute contrast ratio value has imperfect correlation to human perception of image quality. A new measurement method, called perceptual contrast length (PCL), is proposed as an improved standard for measuring contrast. Based on human perception tests under various conditions, PCL is shown to have higher correlation to human perception of image quality.