Patent ID: 8917419

Claim:
An image processing apparatus that converts input image data into printable image data, comprising: a screen processing unit configured to perform screen processing on the input image data; a determination unit configured to determine whether moiré occurs in screen image data generated by the screen processing unit for a target pixel in the input image data; an output unit configured to output, depending on the determination result made by the determination unit, one of a screen pixel value in the screen image data for the target pixel and a value obtained by converting an input pixel value into a printable pixel value based on intermediate data, as a value of the target pixel in the printable image data, the intermediate data being generated by replacing a screen pixel in the screen image data that is determined to have moiré by the determination unit with the input pixel value in the input image data; a selection unit configured to select the input pixel value from a pixel that is determined to have moiré by the determination unit, in the screen image data; and a conversion unit configured to convert intermediate data obtained from the selection unit into the printable pixel value.