Image evaluation apparatus and method, image forming system, and non-transitory computer readable medium

摘要

An image evaluation apparatus includes a reading unit that includes a monochrome detection unit reading, in a focused state, an image formed on a recording material by an image forming apparatus that represents grayscale of the image by forming dots on the recording material, and a color detection unit reading the image in a defocused state; an image information obtaining unit that obtains image information for the image forming apparatus to form the image; a computing unit that computes a luminance and a chroma of an image supposed to be formed on the recording material by the image forming apparatus from the obtained image information; a comparing unit that compares a derived luminance with the computed luminance, and compares a derived chroma with the computed chroma; and an image evaluation unit that evaluates the image formed by the image forming apparatus, on the basis of results of comparison.

主权项

1. An image evaluation apparatus comprising:
a reading unit that includes a monochrome detection unit and a color detection unit,
wherein the monochrome detection unit is arranged at a focused state and reads an image formed on a recording material by an image forming apparatus that performs grayscale representation of the image by forming dots on the recording material, andwherein the color detection unit is arranged at a defocused state which is out of the focused state and reads the image; an image information obtaining unit that obtains image information that is information for the image forming apparatus to form the image on the recording material; a computing unit that computes a luminance and a chroma of an image supposed to be formed on the recording material by the image forming apparatus from the image information obtained by the image information obtaining unit; a comparing unit that compares a luminance derived from the image read by the monochrome detection unit included in the reading unit with the luminance computed by the computing unit, and compares a chroma derived from the image read by the color detection unit with the chroma computed by the computing unit; and an image evaluation unit that evaluates the image formed by the image forming apparatus, on the basis of results of comparison performed by the comparing unit, wherein the image evaluation unit evaluates the image by weighting the result of comparison between the luminance derived from the image read by the monochrome detection unit and the luminance computed by the computing unit and the result of comparison between the chroma derived from the image read by the color detection unit and the chroma computed by the computing unit, in accordance with a use of the recording material.