Image processing apparatus, image processing method and image reading apparatus

摘要

An image processing apparatus includes a first log conversion unit configured to execute gradation conversion processing for copying on an image signal generated by reading an original, an output-signal converting unit configured to generate an output signal from the image signal subjected to the gradation conversion processing for copying and output the output signal to an output apparatus, a second log conversion unit configured to be provided independently from the first log conversion unit and execute gradation conversion processing for specific original detection on the image signal generated by reading the original, and a specific-original detecting unit configured to detect whether the original is a specific original from the image signal subjected to the gradation conversion processing for specific original detection.