31:3 Judder-Induced Edge Flicker at Zero Spatial Contrast

Autor:	Victor Cheung, Jennifer Gille, Christine Feng, James Larimer
Rok vydání:	2003
Předmět:	Physics Brightness Artifact (error) business.industry media_common.quotation_subject Flicker Flicker fusion threshold Edge (geometry) Signal Optics Contrast (vision) Trailing edge business media_common
Zdroj:	SID Symposium Digest of Technical Papers. 34:1042
ISSN:	0097-966X
DOI:	10.1889/1.1832466
Popis:	Judder is a motion artifact that degrades the quality of video imagery. Smooth motion appears jerky and can appear to flicker along the leading and trailing edge of the moving object. In a previous paper (1) we demonstrated that the strength of the edge flicker signal depended upon the brightness of the scene and the contrast of the moving object relative to the background. Reducing the contrast between foreground and background reduced the flicker signal. In this report, we show that the contrast signal required for judder-induced edge flicker is due to temporal contrast and not simply to spatial contrast. Bars made of random dots of the same dot density as the background exhibit edge flicker when moved at sufficient rate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c67a7afa077a9a627704843066775ed4 https://doi.org/10.1889/1.1832466 Zobrazit plný text záznamu Plný text