US 11,727,599 B2
Color correspondence information generating system, program, and method of generating color correspondence information
Takaya Tanaka, Taito-ku (JP); Takashi Inamura, Taito-ku (JP); and Kazuhiro Sano, Taito-ku (JP)
Assigned to TOPPAN PRINTING CO., LTD., Tokyo (JP)
Filed by TOPPAN PRINTING CO., LTD., Tokyo (JP)
Filed on Sep. 22, 2020, as Appl. No. 17/28,105.
Application 17/028,105 is a continuation of application No. PCT/JP2019/012075, filed on Mar. 22, 2019.
Claims priority of application No. 2018-055205 (JP), filed on Mar. 22, 2018.
Prior Publication US 2021/0004989 A1, Jan. 7, 2021
Int. Cl. G06K 9/00 (2022.01); G06T 7/90 (2017.01); G06T 5/00 (2006.01); G06T 7/00 (2017.01)
CPC G06T 7/90 (2017.01) [G06T 5/001 (2013.01); G06T 7/0002 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/30168 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A color correspondence information generating system which generates color correspondence information indicating a correspondence relation between color information and color characteristic information using a first image obtained by capturing first objects under an environment of a light source, the color characteristic information indicating a characteristic of color represented by an image, the system comprising:
processing circuitry configured to:
store, in an object database, correspondences between recognition information for recognizing the respective first objects and the color characteristic information about the first objects recognized by the recognition information,
recognize the first objects in the first image from the first image and the recognition information,
output image regions of the first objects in the first image and first color characteristic information, the first color characteristic information being the color characteristic information corresponding to the first objects,
generate the color correspondence information, which is a correspondence relation between the color information and the color characteristic information, using the color information and the first color characteristic information of pixels in the image regions,
determine a measure of color gamut reproduction, the measure of color gamut reproduction being based on a color space corresponding to the first color characteristic information, and
evaluate the first image based on the measure of color gamut reproduction,
wherein the color characteristic information and the recognition information have a one-to-one correspondence relation with each other or the color characteristic information is the recognition information itself.