Title of the Invention: Color Printing Quality Inspection Method Patent Application Number
Abstract: A color print quality inspection method is characterized in that color printed images are sampled after being partitioned by color, and the chroma errors of the sampled images are directly checked, and the sampling density is 1% to 10% of the original image. The invention directly inspects the chromaticity error of the color image after sampling, instead of converting the color image into a "black and white model" and then performing the chromaticity error check, avoiding the existence of the "black and white model" indirectly inspecting various kinds of color printing. Chromatic aberrations are serious defects that are very sensitive to the environment. The invention also provides an inspection method for checking the quality of banknotes, which can check all the errors of the banknote quality, and the inspection data is greatly reduced. The inspection equipment is simple, the inspection speed is fast, and there is no need to perform white balance correction three times a day. .
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