Method and system for luminance adjustment of images in an image sequence

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United States of America Patent

PATENT NO 9609233
APP PUB NO 20140301604A1
SERIAL NO

14355193

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Abstract

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Disclosed are a method and apparatus for adjusting a set of luminance values associated with a set of visual elements in a current frame (310) of a video sequence for object detection (370). The method determines (410,430,450), for each of a plurality of scenarios (SO, SI, S2), a set of adjusted luminance values based on a corresponding luminance compensation value, and accumulates (460), for each scenario, a set of brightness counts and darkness counts of the current frame based on the set of adjusted luminance values. A metric (470) is calculated for each scenario based on the set of brightness counts and darkness counts and one of scenarios is selected based on the calculated metric. The method then selects (350) the adjusted luminance value associated with the selected scenario as an adjusted set of luminance values associated with the current frame of the video sequence.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gupta, Amit Kumar Liberty Grove, AU 90 736
Pakulski, Peter Jan Marsfield, AU 9 125
Partis, Ashley John Camperdown, AU 5 141
See, David Kenji Artarmon, AU 7 67
Tojo, Hiroshi Fuchu, JP 69 755

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