Dynamic range compression method
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United States of America Patent
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Feb 26, 2008
Grant Date -
Feb 26, 2004
app pub date -
Jul 3, 2001
filing date -
Jul 5, 2000
priority date (Note) -
Expired
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Abstract
A method for compressing the dynamic range of an image sensor (202) including a multiplicity of pixels. The method includes the steps of exposing each of the pixels to light and producing an associated photocurrent per pixel, representative of the light exposure. Then, on a per-pixel basis, controlling exposure time of each of the pixels on the basis of a monotonically rising convex function of the associated photocurrent of each of the pixel.
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