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US 11,388,372 B2Granted
Biological state detecting apparatus and biological state detection method
AssigneeNuvoton Technology Corporation Japan
InventorsMakoto Atoji, Tomohito Nagata, Noritaka Shimizu, Kazuaki Matsuda
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Abstract
A biological state detecting apparatus which generates biological information of a person, light sources which emit light having a first wavelength and light having a second wavelength, respectively, an imaging device which receives reflected light of the emitted light, a controller which controls the light sources, an arithmetic operator which reads out a first image and a second image from the imaging device and performs an arithmetic operation thereon, and a state estimator which generates the biological information of the person. The arithmetic operator generates a distance image based on the first image and the second image.
Claims16
A biological state detecting apparatus which detects a biological state of a person, the biological state detecting apparatus comprising:
- a first light source which emits light having a first wavelength;
- a second light source which emits light having a second wavelength different from the first wavelength;
- an imaging device including a plurality of elements which receive reflected light of the light emitted from the first light source and reflected light of the light emitted from the second light source, the light emitted from the first light source and the light emitted from the second light source being reflected by the person;
- a controller which controls the first light source and the second light source such that the first light source and the second light source alternately emit light;
- an arithmetic operator which generates a third image by reading out a first image and a second image from the imaging device, and performing an arithmetic operation on the first image and the second image, the first image being obtained through reception of the reflected light of the light emitted from the first light source, the second image being obtained through reception of the reflected light of the light emitted from the second light source;
- and
- a state estimator which generates biological information indicating a biological state of the person based on the third image generated by the arithmetic operator, and outputs the biological information,
- wherein the arithmetic operator further generates a distance image based on at least one of the first image or the second image, and
- wherein the state estimator includes a detection region specifier which specifies a detection region in the third image, which is a region used to generate the biological information, and generates the biological information using the detection region specified by the detection region specifier.
6 more elements
A biological state detecting apparatus which detects a biological state of a person, the biological state detecting apparatus comprising:
- a first light source which emits light having a first wavelength;
- a second light source which emits light having a second wavelength different from the first wavelength;
- an imaging device including a plurality of elements which receive reflected light of the light emitted from the first light source and reflected light of the light emitted from the second light source, the light emitted from the first light source and the light emitted from the second light source being reflected by the person;
- a controller which controls the first light source and the second light source such that the first light source and the second light source alternately emit light;
- an arithmetic operator which generates a third image by reading out a first image and a second image from the imaging device, and performing an arithmetic operation on the first image and the second image, the first image being obtained through reception of the reflected light of the light emitted from the first light source, the second image being obtained through reception of the reflected light of the light emitted from the second light source;
- and
- a state estimator which generates biological information indicating a biological state of the person based on the third image generated by the arithmetic operator, and outputs the biological information,
- wherein the arithmetic operator further generates a distance image based on at least one of the first image or the second image,
- wherein the arithmetic operator generates the distance image by synthesizing the first image and the second image, and
- wherein the arithmetic operator:
- reads out the first image and the second image from the imaging device;
- and
- generates the distance image by synthesizing the first image and the second image read out, to reproduce arrangement positions of first elements and second elements in the imaging device, the first elements being included in the plurality of elements and corresponding to the first image, the second elements being included in the plurality of elements and corresponding to the second image.
10 more elements
A biological state detection method of detecting a biological state of a person, the biological state detection method comprising:
- controlling a first light source which emits light having a first wavelength and a second light source which emits light having a second wavelength different from the first wavelength, such that the first light source and the second light source alternately emit light;
- generating a third image by reading out a first image and a second image from an imaging device including a plurality of elements which receive reflected light of the light emitted from the first light source and reflected light of the light emitted from the second light source, the light emitted from the first light source and the light emitted from the second light source being reflected by the person, and performing an arithmetic operation on the first image and the second image, the first image being obtained through reception of the reflected light of the light emitted from the first light source, the second image being obtained through reception of the reflected light of the light emitted from the second light source;
- and
- generating biological information indicating a biological state of the person based on the third image,
- wherein in the generating of the third image, a distance image is further generated based on at least one of the first image or the second image, and
- wherein a detection region in the third image, which is a region used to generate the biological information, is specified and the biological information is generated using the detection region specified.
3 more elements
Dependencies are inferred from the claim text.