Image processing apparatus, method thereof, and storage medium

摘要

An image processing apparatus that outputs, in the recording of a fine line image, an image having high fine line reproducibility by performing image processing according to a paper frequency characteristic. This image processing apparatus includes an input unit configured to input image data representing an image to be formed on a recording medium, an acquisition unit configured to acquire a frequency characteristic of surface unevenness of the recording medium, and a correction unit configured to correct the image data based on the frequency characteristic acquired by the acquisition unit.

主权项

1. An image processing apparatus comprising:
an input unit configured to input image data representing an image to be formed on a recording medium; an acquisition unit configured to acquire information related to a degree of surface unevenness of the recording medium caused by fibers of the recording medium; and a correction unit configured to correct the image data based on the information related to the degree of surface unevenness acquired by the acquisition unit, wherein the acquisition unit is configured to acquire, as the information related to the degree of surface unevenness of the recording medium, a frequency characteristic of surface unevenness to be obtained by performing frequency analysis on a change in an intensity when light emitted to and reflected from the recording medium is received while the recording medium is conveyed, and wherein the correction unit is configured to thicken a fine line in the image data if an amplitude component in a frequency band whose frequency characteristic of the surface unevenness is lower than a predetermined frequency is higher than a predetermined value, and increase a density of a fine line in the image data if an amplitude component in a frequency band whose frequency characteristic of the surface unevenness is higher than a predetermined frequency is higher than a predetermined value.