Visual image quality assessment with sensor motion : Effect of recording and presentation velocity
作者： Piet Bijl
DOI: 10.1364/AO.49.000343
关键词: Cardinal point 、 Angular velocity 、 Observer (special relativity) 、 Physics 、 Optics 、 Image quality 、 Slow motion 、 Pixel 、 Visual acuity 、 Ranging
摘要: To assess the effect of motion on observer performance with an undersampled uncooled thermal imager, moving imagery from a static scene was recorded at nine different angular velocities ranging 0 (static) to 1 pixel/frame by use tilted rotating mirror. The contained acuity test chart triangular patterns based triangle orientation discrimination method. Visual sensor determined in two playback modes: normal speed and slow motion. In both conditions, velocity pattern over focal plane (up 0.25 pixel/frame) results large increase (+50%) comparison condition because is able utilize more phases same pattern. At higher benefit rapidly decreases due smear, above 0.50 difference marginal. Up 0.75 pixel/frame, for conditions are similar, indicating that temporal display characteristics human dynamic not responsible reduction. obtained this laboratory method correspond well earlier perception studies real targets low medium camera
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