Backlit scene and people scene detecting method and apparatus an

Details Backlit scene and people scene detecting method and apparatus an Backlit scene and people scene detecting method and apparatus an

1997-03-27

1999-08-17

Vu, Kim Yen

Image analysis

Color image processing

Image segmentation using color

382284, 358520, 358540, H04N 160

Patent

active

059405309

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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