P‐30: Temporal Sampling Parameters and Motion Portrayal of Television

Abstract

The relationship between the temporal sampling parameters and motion portrayal of television images was studied. Subjective evaluation tests revealed the parameter values for perceptible and acceptable limits of motion blur. The stroboscopic effect was also evaluated for various sampling frequency and aperture by using the test materials similar to those used in broadcast programs.

A study of subjective video quality at various frame rates

“…The reason for this content dependence can depend on many factors such as: speed and size of stimuli in the scene, viewing pattern, viewing conditions, and the amount of blurring in the scene. Camera motion also appears to contribute to the content dependence, as all the sequences with camera motion (2,5,6,11,14) show a significant difference between 60Hz and 120Hz.…”

“…Notable research into the relationship between frame rate and perceived quality include the work by Ou et al [10], Sugawara et al [11] and Emoto et al [12], but these have all been conducted based on different methodologies. Ou et al consider frame rates only up to 30Hz, and while Emoto et al consider frame rates up to 240Hz, they do not provide their source sequences.…”

Improvement of 3D visual image quality by using high frame rate

“…Research on the relationship between image quality and high frame rate, further experiments, and analysis using the spatial frequency response is ongoing, giving important guidance to the specification and development goals of the next generation of video systems.…”

The visibility of motion artifacts and their effect on motion quality

“…2. According to common practice [4,10], we interpret a MIS of 4.5 as the critical frame rate, corresponding to an imperceptible difference compared with the reference, and a MIS of 3.5 as an acceptable frame rate. Both the critical and acceptable frame rates increase as the speed of the stimulus increases, as predicted by Watson [8].…”

“…The visibility of motion blur has already been studied in some detail [4,10,11]. However it can be difficult to separate the effects of temporal filtering by the human visual system [12], and the blurring imposed by the display and camera.…”