Electronic endoscope processor and electronic endoscopic system

An electronic endoscope system comprising:

• an electronic endoscope processor comprising:
• a converting means for converting each piece of pixel data that is made up of n types of color components and constitutes a color image of a biological tissue in a body cavity into a piece of pixel data that is made up of m types of color components out of the n types of color components, n being a natural number greater than or equal to 3, m being a natural number greater than or equal to 2, and m being smaller than n;
• an evaluation value calculating means for calculating, in units of pixels of the color image, a degree of inflammation as that indicates an extent of inflammation of an abnormal site inside the body cavity that is inflamed as an evaluation value related to a target illness based on the converted pieces of pixel data that are made up of m types of color components;
• and
• a lesion index calculating means for calculating a lesion index for each of a plurality of types of lesions related to the target illness based on evaluation values calculated for the pixels of the color image;
• an electronic endoscope configured to generate data expressing the color image and output the data to the electronic endoscope processor;
• and
• a display apparatus configured to display the lesion index obtained by the electronic endoscope processor.

An electronic endoscope processor comprising:

• a first image processing circuit configured to:
• convert each piece of pixel data that is made up of n types of color components and constitutes a color image of a biological tissue in a body cavity into a piece of pixel data that is made up of m types of color components out of the n types of color components, n being a natural number greater than or equal to 3, m being a natural number greater than or equal to 2, and m being smaller than n, and
• calculate, in units of pixels of the color image, a degree of inflammation that indicates an extent of inflammation of an abnormal site inside the body cavity that is inflamed as an evaluation value related to a target illness based on the converted pieces of pixel data that are made up of m types of color components;
• and
• a second image processing circuit configured to calculate a lesion index for each of a plurality of types of lesions related to the target illness based on evaluation values calculated for the pixels of the color image.