Image processing method, image processing device, and recording medium

An image processing device, comprising:

• an obtainer that obtains an image;
• an extractor that extracts, based on a pixel value of each of a plurality of pixels of the image, a plurality of first current pixels each having a pixel value included in a first color range including a specific color range that defines a specific color;
• an excluder that excludes, in a second region different from a first region including a center region of the image, (i) a low saturation pixel from the plurality of first current pixels when a total number of low saturation pixels is greater than or equal to a first threshold value, and (ii) a high saturation pixel from the plurality of first current pixels when a total number of high saturation pixels is greater than or equal to a second threshold value, the low saturation pixel having a pixel value included in a low saturation range which is a range of saturation lower than first saturation, the high saturation pixel having a pixel value included in a high saturation range which is a range of saturation higher than second saturation higher than the first saturation;
• and
• an outputter that outputs a plurality of second current pixels obtained as a result of the exclusion by the excluder.

A non-transitory computer-readable recording medium having stored thereon a program for causing a computer to perform an image processing method including:

• obtaining an image;
• extracting, based on a pixel value of each of a plurality of pixels of the image, a plurality of first current pixels each having a pixel value included in a first color range including a specific color range that defines a specific color;
• excluding, in a second region different from a first region including a center region of the image, (i) a low saturation pixel from the plurality of first current pixels when a total number of low saturation pixels is greater than or equal to a first threshold value, and (ii) a high saturation pixel from the plurality of first current pixels when a total number of high saturation pixels is greater than or equal to a second threshold value, the low saturation pixel having a pixel value included in a low saturation range which is a range of saturation lower than first saturation, the high saturation pixel having a pixel value included in a high saturation range which is a range of saturation higher than second saturation higher than the first saturation;
• and
• outputting a plurality of second current pixels obtained as a result of the excluding.