Medical image processing system and endoscope system

A medical image processing system comprising:

• a processor configured to function as:
• an image acquiring unit that acquires an observation image obtained by imaging an observation target;
• a biological information calculating unit that calculates, based on the observation image, biological information included in the observation target;
• a reference value processing unit that sets, for a measurement value indicative of the biological information of a measurement target in the observation target, a reference value serving as a reference for the biological information;
• a difference image generating unit that calculates a difference value between the measurement value and the reference value and generates, based on the difference value, a difference image;
• and
• a biological information frequency distribution calculating unit that calculates a frequency distribution of the biological information,
• wherein the reference value processing unit functions as a third reference value calculating unit that calculates, based on a first region excluding distribution, the reference value, the first region excluding distribution excluding a first distribution region where reliability of the biological information is low in the frequency distribution of the biological information.

A medical image processing system comprising:

• a processor configured to function as:
• an image acquiring unit that acquires observation images in a plurality of frames obtained by imaging an observation target in different frames;
• a biological information calculating unit that calculates an arithmetic value through arithmetic processing based on the observation images in the plurality of frames and calculates, from the calculated arithmetic value, biological information included in the observation target;
• a reference value processing unit that sets, for a measurement value indicative of the biological information of a measurement target in the observation target, a reference value serving as a reference for the biological information by using reliability of the biological information;
• a difference image generating unit that calculates a difference value between the measurement value and the reference value and generates, based on the difference value, a difference image;
• and
• an arithmetic value frequency distribution calculating unit that calculates a frequency distribution of the arithmetic value,
• wherein the reference value processing unit functions as a fourth reference value calculating unit that uses the arithmetic value as the reliability, and calculates, based on a second region excluding distribution, the reference value, the second region excluding distribution excluding a second distribution region having a specific arithmetic value in the frequency distribution of the arithmetic value.

An endoscope system comprising:

• a processor configured to function as:
• an endoscope that obtains an observation image by imaging an observation target;
• an image acquiring unit that acquires the observation image obtained by imaging the observation target;
• a biological information calculating unit that calculates, based on the observation image, biological information included in the observation target;
• a reliability calculating unit that calculates, based on the observation image, reliability regarding the biological information;
• a reference value processing unit that sets, for a measurement value indicative of the biological information of a measurement target in the observation target, a reference value serving as a reference for the biological information by using the reliability;
• and
• a difference image generating unit that calculates a difference value between the measurement value and the reference value and generates, based on the difference value, a difference image.