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31:3 Judder‐Induced Edge Flicker at Zero Spatial Contrast
Author(s) -
Larimer James,
Feng Christine,
Gille Jennifer,
Cheung Victor
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832466
Subject(s) - flicker , contrast (vision) , brightness , artifact (error) , enhanced data rates for gsm evolution , signal (programming language) , computer vision , artificial intelligence , physics , computer science , optics , computer graphics (images) , programming language
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.