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US 11,386,558 B2Granted
Medical image processing system and endoscope system
AssigneeFUJIFILM Corporation
InventorsNorimasa Shigeta, Takaaki Saito
Life of this patent
Estimating the term…
Abstract
An oxygen saturation calculating unit calculates, based on an observation image, an oxygen saturation included in the observation target. A reliability calculating unit calculates, based on the observation image, reliability regarding the biological information. A reference value processing unit 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. A difference image generating unit calculates a difference value between the measurement value and the reference value and generates, based on the difference value, a difference image.
Claims19
A medical image processing system comprising:
- a processor configured to:
- acquire an observation image obtained by imaging an observation target;
- calculate, based on the observation image, biological information included in the observation target;
- calculate, based on the observation image, reliability regarding the biological information;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- generate, based on the biological information, a biological information image that is an image indicative of the biological information;
- set a reference value calculation region that is a target for calculating the reference value in the observation image or the biological information image;
- calculate, based on the biological information included in the reference value calculation region, the reference value;
- determine that the reference value is appropriately set in the reference value calculation region if a representative value of the reliability included in the reference value calculation region is greater than or equal to a region determination threshold and determine that the reference value is not appropriately set in the reference value calculation region if the representative value of the reliability included in the reference value calculation region is less than the region determination threshold;
- and
- generate, if it is determined that the reference value is not accurately set in the reference value calculation region, an error for reporting that the reference value is not accurately calculated.
9 more elements
A medical image processing system comprising:
- a processor configured to:
- acquire an observation image obtained by imaging an observation target;
- calculate, based on the observation image, biological information included in the observation target;
- calculate, based on the observation image, reliability regarding the biological information;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- generate, based on the biological information, a biological information image that is an image indicative of the biological information;
- set a reference value calculation region that is a target for calculating the reference value in the observation image or the biological information image;
- calculate, based on the biological information included in the reference value calculation region, the reference value;
- and
- multiply the biological information included in the reference value calculation region by a weighting factor based on the reliability and perform addition to calculate the reference value.
8 more elements
A medical image processing system comprising:
- a processor configured to:
- acquire an observation image obtained by imaging an observation target;
- calculate, based on the observation image, biological information included in the observation target;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- and
- calculate a frequency distribution of the biological information,
- wherein the processor is further configured to calculate, 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.
5 more elements
A medical image processing system comprising:
- a processor configured to:
- acquire observation images in a plurality of frames obtained by imaging an observation target in different frames;
- calculate an arithmetic value through arithmetic processing based on the observation images in the plurality of frames and calculate, from the calculated arithmetic value, biological information included in the observation target;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- and
- calculate a frequency distribution of the arithmetic value,
- wherein the processor is further configured to use the arithmetic value as the reliability, and calculate, 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.
5 more elements
An endoscope system comprising:
- a processor configured to:
- obtain an observation image by imaging an observation target;
- acquire the observation image obtained by imaging the observation target;
- calculate, based on the observation image, biological information included in the observation target;
- calculate, based on the observation image, reliability regarding the biological information;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- generate, based on the biological information, a biological information image that is an image indicative of the biological information;
- set a reference value calculation region that is a target for calculating the reference value in the observation image or the biological information image;
- calculate, based on the biological information included in the reference value calculation region, the reference value;
- determine that the reference value is appropriately set in the reference value calculation region if a representative value of the reliability included in the reference value calculation region is greater than or equal to a region determination threshold and determine that the reference value is not appropriately set in the reference value calculation region if the representative value of the reliability included in the reference value calculation region is less than the region determination threshold;
- and
- generate, if it is determined that the reference value is not accurately set in the reference value calculation region, an error for reporting that the reference value is not accurately calculated.
10 more elements
An endoscope system comprising:
- a processor configured to:
- acquire an observation image obtained by imaging an observation target;
- calculate, based on the observation image, biological information included in the observation target;
- calculate, based on the observation image, reliability regarding the biological information;
- set, 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;
- calculate a difference value between the measurement value and the reference value and generate, based on the difference value, a difference image;
- generate, based on the biological information, a biological information image that is an image indicative of the biological information;
- set a reference value calculation region that is a target for calculating the reference value in the observation image or the biological information image;
- calculate, based on the biological information included in the reference value calculation region, the reference value;
- and
- multiply the biological information included in the reference value calculation region by a weighting factor based on the reliability and perform addition to calculate the reference value.
8 more elements
Dependencies are inferred from the claim text.