Backlit scene and people scene detecting method and apparatus and a gradation correction apparatus
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United States of America Patent
Stats
-
Aug 17, 1999
Issued Date -
N/A
app pub date -
Mar 27, 1997
filing date -
Jul 21, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for printing video images is disclosed. First the percentage of backlighting or people in the image is detected. That is, the probability of the presence of backlighting or people is detected. Then, the density gradation table is modified based on the detection result, and the presence of backlighting or the presence of people in the image is evaluated based on optical information, to select the best density gradation table from among plural density gradation tables, or to synthesize the best density gradation table. A luminance table is generated using the optimized density gradation table, and gradation correction of the image is then accomplished using that luminance table.
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Family
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Cited Art Landscape
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