Endoscope system and evaluation value calculation device

An evaluation value calculation device, comprising:

• an allocator configured to allocate, to each of a plurality of pixels constituting a color image including at least three color components, based on color components of the pixel, a corresponding point in a plane that includes a first axis, a second axis, and a third axis;
• a distance data calculator configured to calculate, for each of the plurality of pixels, distance data representing a distance between the third axis and the point corresponding to the pixel along a line that is perpendicular to the third axis;
• and
• an evaluation value calculator configured to calculate an evaluation value for the color image based on the calculated distance data for each of the plurality of pixels,
• wherein the first axis is an axis of a first component of the at least three color components, the second axis is an axis of a second component of the at least three color components that intersects with the first axis, and the third axis passes through the intersection of the first axis and the second axis and is nonparallel with each of the first axis and the second axis, and
• wherein the third axis extends in a direction of maximum sensitivity to brightness of the color image in the plane, and an axis orthogonal to the third axis extends in a direction of minimum sensitivity to brightness of the color image in the plane, and
• wherein, for each of the plurality of pixels, the distance data indicates a degree of inflammation.

An evaluation value calculation device, comprising:

• an allocator configured to allocate, to each of a plurality of pixels constituting a color image having red, green, and blue components, based on red, green, and blue components of the pixel, a corresponding point in a plane that includes a first axis, a second axis, and a third axis;
• a distance data calculator configured to calculate, for each of the plurality of pixels, distance data representing a distance between the third axis and the point corresponding to the pixel along a line that is perpendicular to the third axis;
• and
• an evaluation value calculator configured to calculate an evaluation value for the color image based on the calculated distance data for each of the plurality of pixels,
• wherein the first axis is an axis of the red component, the second axis is an axis of the green component or of the blue component and is perpendicular to the first axis, and the third axis passes through the intersection of the first axis and the second axis and is nonparallel with each of the first axis and the second axis, and
• wherein the third axis extends in a direction of maximum sensitivity to brightness of the color image in the plane, and an axis orthogonal to the third axis extends in a direction of minimum sensitivity to brightness of the color image in the plane, and
• wherein, for each of the plurality of pixels, the distance data indicates a degree of inflammation.