Method for automatic exposure control within a video capture device
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United States of America Patent
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May 7, 2013
Grant Date -
May 13, 2010
app pub date -
Nov 7, 2008
filing date -
Nov 7, 2008
priority date (Note) -
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Abstract
On embodiment of the present invention sets forth a technique for automatically computing exposure parameters for a digital video camera (DVC) system. The exposure parameters include exposure gain, analog gain, and digital gain. Each frame is analyzed with respect to an image luma value. Exposure gain and analog gain are adjusted to reduce differences between a target image luma value and measured image luma values over sequential frames. Digital gain is adjusted with respect to each frame to reduce visually abrupt changes in sequentially captured video frames.
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