SID Symposium Digest of Technical Papers · 2001 · 27 citations · 1 references
MedicineVision ScienceComputer GraphicsDigital ImagingVisual PsychophysicsContrast Enhancement StrategiesDisplay TechnologiesImage QualityScreen PerformanceVisual EffectsContrast RatioMotion ArtifactsMultimedia DisplaysResponse Time
Abstract The switching speed has become critical once again for LCDs to enter the TV market. In this report, three motion artifacts resulting from the slow response are identified: decrease of dynamic contrast ratio, stroboscopic motion, and blurred edge. It is shown that the first two artifacts disappear completely when the response time is less than 1 frame. However, moving edges cannot maintain the sharpness even if the switching speed is infinite, due to the nature of the hold‐type displays. We show that when LCDs response within half a frame, the quality of moving images is almost as good as that of zero‐response time LCDs. Employing response‐overshoot can enhance the image quality even further.
1