Image processing system of background removal and white/black point compensation

An image processing device for removing a background in a scanned image, comprising:

• a memory for storing instructions;
• and
• a processor that executes the instructions to enable actions, including:
• determining a histogram of each color channel for at least an initially scanned portion of the scanned image, wherein the histogram represents a frequency distribution of pixels in the initially scanned portion across each color value for each color channel;
• determining a white point tracking profile based on the histogram, wherein the while point tracking profile identifies a range of color values for each color channel, wherein the range for each color channel is statistically related to a mode color value of a corresponding color channel;
• determining that a pixel of the pixels in the scanned image has a color profile within the white point tracking profile based on all color values of the color profile being within corresponding ranges of color values of the white point tracking profile, wherein the range of color values for each color channel that is statistically related to the mode color value of the corresponding color channel is determined based on a standard deviation of color values according to the mode color value;
• modifying the pixel to a predetermined color profile in response to determining that the pixel has the color profile within the white point tracking profile;
• and
• removing the modified pixel from the scanned image.

A non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause a processor of a computing device to perform operations for removing a background in a scanned image, the operations comprising:

• scanning an image;
• determining a histogram of each color channel for at least an initially scanned portion of the scanned image, wherein the histogram represents a frequency distribution of pixels in the initially scanned portion across each color value for each color channel;
• determining a white point tracking profile based on the histogram, wherein the white point tracking profile identifies a range of color values for each color channel, wherein the range for each color channel is statistically related to a mode color value of a corresponding color channel;
• determining that a pixel of the pixels in the scanned image has a color profile within the white point tracking profile based on all color values of the color profile being within corresponding ranges of color values of the white point tracking profile, wherein the range of color values for each color channel that is statistically related to the mode color value of the corresponding color channel is determined based on a standard deviation of color values according to the mode color value;
• modifying the pixel to a predetermined color profile in response to determining that the pixel has the color profile within the white point tracking profile;
• and
• removing the modified pixel from the scanned image.