Change degree deriving device, change degree deriving system, and non-transitory computer readable medium
AssigneeFuji Xerox Co., Ltd.
InventorsShinji Sasahara, Hitoshi Ogatsu, Junichi Matsunoshita, Ken Ogino
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Abstract
Provided is a change degree deriving device including a receiving unit that receives an image obtained by capturing a known color body and an object while focusing on the object, the known color body including plural of color samples, each of which has a known color numerical value, and a detection image, and a detecting unit that detects a focus deviation of the color samples in the image, based on the detection image.
Claims7
A change degree deriving device comprising:
- a receiving unit that receives an image obtained by capturing a known color body together with an object while focusing on the object and not on the known color body,
- the known color body including (i) a plurality of color samples, each of which has a known color numerical value, and (ii) a detection image;
- and
- a processor programmed to detect a focus deviation of the known color body in the image, based on a difference between (i) a current contrast level in the detection image while focusing on the object and (ii) a contrast level in the detection image while focusing on the known color body.
A change degree deriving system comprising:
- a known color body that includes (i) a plurality of color samples, each of which has a known color numerical value, and (ii) a detection image;
- an image capturing device that captures the known color body together with an object while focusing on the object and not on the known color body;
- and
- a processor programmed to detect a focus deviation of the known color body in data obtained by the image capturing device, based on a difference between (i) a current contrast level in the detection image while focusing on the object and (ii) a contrast level in the detection image while focusing on the known color body.
A non-transitory computer readable medium storing a program causing a computer to execute a process for deriving change degree, the process comprising:
- receiving an image obtained by capturing a known color body together with an object while focusing on the object and not on the known color body,
- the known color body including (i) a plurality of color samples, each of which has a known color numerical value, and (ii) a detection image;
- and
- detecting a focus deviation of the known color body in the image, based on a difference between (i) a current contrast level in the detection image while focusing on the object and (ii) a contrast level in the detection image while focusing on the known color body.
Dependencies are inferred from the claim text.