AUTOMATIC BACKGROUND REMOVAL OF IMAGES
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Mar 6, 2025
app pub date -
Aug 31, 2023
filing date -
Aug 31, 2023
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Abstract
A computationally efficient way is provided to enable background adjustment based on real time, automatic background detection. In one form, the real time detected paper white is used to dynamically adjust 1D LUTs that map the input pixel values before accessing a 3D LUT that stores the weights between the original input pixel value and white (e.g., 255, 128, 128 in L*a*b*). The more complex calculation of generating coefficients in the 3D LUT is made independent of the paper white point. In one form, the white point is calculated based on the histogram of the image collected from the lead edge or the full page.
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