Low pass blurring image filter for filtering only green
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United States of America Patent
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Oct 9, 2001
Grant Date -
N/A
app pub date -
Aug 25, 1999
filing date -
Aug 25, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for efficiently filtering or otherwise processing digital color image data. The invention may be implemented in hardware, firmware or software. In one embodiment, the green color signal is filtered while the blue and red color signal are not filtered. This results in less filtering circuitry and processing time, while retaining the sharpness of the unfiltered signals. Since the human eye is more sensitive to the color green, filtering this color produces the greatest amount of noise reduction per color. Alternative color and filtering arrangements are also disclosed as is file conversion logic.
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