Method and apparatus for determining ambient conditions from an

Details Method and apparatus for determining ambient conditions from an Method and apparatus for determining ambient conditions from an

1996-10-30

2000-03-14

Garber, Wendy

Television

Special applications

Simulator

348143, H04N 718, G09B 900

Patent

active

060379766

ABSTRACT:
A method and apparatus for determining certain ambient conditions in a scene by analyzing a sequence of images that represent the scene. The apparatus uses only image information to determine scene illumination, or the presence of shadows, fog, smoke, or haze by comparing properties of detected objects, averaged over a finite video sequence, against properties of the reference image of the scene as that scene would appear without any objects present. Such a reference image is constructed in a manner similar to time-averaging successive camera images.

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