Abstract: Provided is a medical image processing apparatus that generates a color image by using one type of specific color image obtained by imaging a subject with specific monochromatic light. The medical image processing apparatus (10) includes an image acquisition unit (medical image acquisition unit (11)) that acquires a specific color image (56) obtained by imaging a subject with specific monochromatic light, and a color image generation unit (12) that generates a color image from the specific color image by assigning the specific color image (56) to a plurality of color channels and adjusting a balance of each of the color channels.

Abstract: Provided is a medical image processing system capable of maintaining or improving the resolution of an image obtained by using narrow-band light of a short wavelength while maintaining image quality of an image obtained by using broadband light such as white light. A light source unit emits specific narrow-band light of a short wavelength. An image sensor includes a first pixel group including a B pixel and a second pixel group including a G pixel and a W pixel. The B pixel has a higher sensitivity to the specific narrow-band light than the G pixel. The G pixel has a sensitivity to light in a green band and the specific narrow-band light. The W pixel has a sensitivity to broadband illumination light including the light in the green band and the specific narrow-band light.

Abstract: A medical image acquisition unit acquires a medical image obtained by imaging an observation target. A feature amount calculation unit calculates a feature amount of the observation target for each pixel of an image region of the medical image or for each divided region obtained by dividing the image region of the medical image into a specific size. A stage determination unit calculates a distribution index value which is an index value of the spatial distribution of the feature amount of each divided region, and determines the disease stage of the observation target based on the distribution index value.

Abstract: An effective diagnosis region detection unit uses an effective diagnosis region detection model and detects an effective diagnosis region in which a non-target region of interest other than a region of interest is removed from an observation target, from a first medical image. The effective diagnosis region detection model is obtained by learning using first learning data including the first medical image and effective diagnosis region information regarding the effective diagnosis region. The region-of-interest detection unit detects the region of interest from the effective diagnosis region.

Abstract: Provided is a medical image processing system that can stably control the light emission amount of narrow-band light of a short wavelength in a case where the narrow-band light of the short wavelength is used for illumination of an observation target. A light source circuit emits specific narrow-band light of a short wavelength. An image sensor includes a first pixel group including a B pixel and a second pixel group including a G pixel. The B pixel has a higher sensitivity to the specific narrow-band light than the G pixel. The G pixel has a sensitivity to light in a green band and the specific narrow-band light. The light source control unit controls the light emission amount of the specific narrow-band light on the basis of a pixel value of the B pixel and a pixel value of the G pixel.

Abstract: A medical image processing apparatus includes a processor configured to acquire a medical image including a subject image; perform a first discrimination process of detecting a lesion and discriminating a degree of progress of the detected lesion by using a first medical image captured using first illumination light having a specific spectrum, among the medical images; and perform a second discrimination process of discriminating the degree of progress of the lesion by using a second medical image captured using second illumination light having a spectrum different from the first illumination light, among the medical images, wherein the processor performs the second discrimination process in a case where a type of the lesion detected in the first discrimination process is a specific type, or in a case where the lesion detected in the first discrimination process indicates a specific degree of progress.

Abstract: A medical image processing apparatus includes a medical image acquisition unit that acquires a medical image including a subject image, a first discrimination processing unit that performs a first discrimination process of detecting a lesion and discriminating a degree of progress of the detected lesion by using a first medical image captured using first illumination light having a specific spectrum, among the medical images, and a second discrimination processing unit that performs a second discrimination process of discriminating the degree of progress of the lesion by using a second medical image captured using second illumination light having a spectrum different from the first illumination light, among the medical images.

Abstract: An observation condition acquisition unit acquires an observation condition including at least one of a moving speed of an endoscope, an observation distance between the endoscope and an observation target, or brightness of the observation target. A lesion information acquisition unit acquires lesion information including at least one of a diagnostic purpose or a certainty degree of a lesion obtained from an endoscope image at a timing at which the observation condition is acquired. A display format determination unit determines a display format of the lesion information on a display based on at least any of the observation condition or the lesion information. A control of displaying the lesion information on the display according to the display format is performed.

Abstract: A catalyst deterioration determining device for use in a straddled vehicle having an engine, a transmission that transmits motive power of an engine, and a catalyst that cleans an exhaust gas from the engine. The catalyst deterioration determining device includes a running state acquirer that acquires a plurality of running states, a state determiner that stores a plurality of allowable conditions, each of which is a condition for determining work in regard to a degradation state of the catalyst to be executed and is based on a relationship among a plurality of gear ratios of the transmission, an intake state of the engine and a rotation speed of the engine, and determines whether the plurality of running states acquired by the running state acquirer satisfy the plurality of allowable conditions, and a determination executor that executes the determining work based on a result of the determination by the state determiner.

Abstract: A catalyst degradation determining device for a straddled vehicle that includes an engine, a catalyst for cleaning an exhaust gas from the engine, and a throttle valve that is controllable by cruise control of the straddled vehicle to keep a traveling speed of the straddled vehicle constant. The catalyst degradation determining device includes a determiner that determines whether the cruise control is being executed, and an execution controller. The execution controller is configured to determine a degradation state of the catalyst while controlling an air-fuel mixture supplied through the throttle valve to the engine, in a case where the determiner determines that the cruise control is not being executed, and at least one running state of the straddled vehicle satisfies at least one predetermined allowable condition, and not to determine the degradation state of the catalyst in a case where the determiner determines that the cruise control is being executed.

Abstract: An imaging unit acquires a white light image by imaging an observation target being illuminated with white light, and acquires a specific light image by imaging the observation target being illuminated with specific light. A light source control unit controls the number of light emission frames of the white light and the number of light emission frames of the specific light in one light emission cycle according to at least one of a moving speed of the imaging unit, zoom information, or a light emission amount.

Abstract: A catalyst degradation determining device for a straddled vehicle that includes an engine, a catalyst for cleaning an exhaust gas from the engine, and a throttle valve that is controllable by cruise control of the straddled vehicle to keep a traveling speed of the straddled vehicle constant. The catalyst degradation determining device includes a determiner that determines whether the cruise control is being executed, and an execution controller. The execution controller is configured to determine a degradation state of the catalyst while controlling an air-fuel mixture supplied through the throttle valve to the engine, in a case where the determiner determines that the cruise control is not being executed, and at least one running state of the straddled vehicle satisfies at least one predetermined allowable condition, and not to determine the degradation state of the catalyst in a case where the determiner determines that the cruise control is being executed.

Abstract: A catalyst deterioration determining device for use in a straddled vehicle having an engine, a transmission that transmits motive power of an engine, and a catalyst that cleans an exhaust gas from the engine. The catalyst deterioration determining device includes a running state acquirer that acquires a plurality of running states, a state determiner that stores a plurality of allowable conditions, each of which is a condition for determining work in regard to a degradation state of the catalyst to be executed and is based on a relationship among a plurality of gear ratios of the transmission, an intake state of the engine and a rotation speed of the engine, and determines whether the plurality of running states acquired by the running state acquirer satisfy the plurality of allowable conditions, and a determination executor that executes the determining work based on a result of the determination by the state determiner.

Abstract: Violet light and green light are mixed and emitted at a first light amount ratio. A contrast difference value ?C1 of first mixed color light emission between a blood vessel contrast of a blue image of first mixed color light emission and a blood vessel contrast of a green image of first mixed color light emission at a specific blood vessel depth satisfies a first condition, and a cross-point blood vessel depth VD1 of first mixed color light emission corresponding to a cross-point CP1 between the blood vessel contrast of the blue image of the first mixed color light emission and the blood vessel contrast of the green image of the first mixed color light emission satisfies a second condition.

Abstract: An endoscope system includes a storage medium that stores a plurality of correspondence between an imaging condition and a plurality of index values relating to a plurality of structures of an observation object, wherein the plurality of index values including a first index value acquirable under the first imaging condition and a second index value non-acquirable under the first imaging condition but acquirable under a second imaging condition, a monitor and a processor, coupled to the storage medium and the monitor. The processor is configured to: acquire an image of the observation object by using an endoscope; acquire a first imaging condition which represents an imaging condition of the image; refer to the plurality of index values and the imaging condition in the storage medium and extract the second imaging condition; and display guidance indicating that the second index value is acquirable under the extracted second imaging condition.

Abstract: There is provided an endoscope system that can obtain a high-resolution endoscopic image not subjected to demosaicing processing as necessary. The endoscope system includes a light source unit that emits illumination light, an image sensor that includes a color filter having one color for each pixel among color filters having a plurality of colors and picks up an image of a subject using the illumination light, a demosaicing processing section that performs demosaicing processing on RAW images having the respective colors and corresponding to the color filters having the respective colors, and a switching section that switches whether to perform the demosaicing processing using spectral information of the illumination light.

Abstract: A medical image acquisition unit acquires a medical image obtained by imaging an observation target. A feature amount calculation unit calculates a feature amount of the observation target for each pixel of an image region of the medical image or for each divided region obtained by dividing the image region of the medical image into a specific size. A stage determination unit calculates a distribution index value which is an index value of the spatial distribution of the feature amount of each divided region, and determines the disease stage of the observation target based on the distribution index value.

Abstract: Provided are an endoscope system and a method of operating the same capable of reliably performing focusing even in a case where an observation target is illuminated with light including long-wave light. A movable lens moves in an optical axis direction. A lens drive unit moves the movable lens from a first lens position of the movable lens where an observation target illuminated with short-wave light is focused to a second lens position of the movable lens where the observation target illuminated with long-wave light having a longer wavelength than the short-wave light is focused.

Abstract: An effective diagnosis region detection unit uses an effective diagnosis region detection model and detects an effective diagnosis region in which a non-target region of interest other than a region of interest is removed from an observation target, from a first medical image. The effective diagnosis region detection model is obtained by learning using first learning data including the first medical image and effective diagnosis region information regarding the effective diagnosis region. The region-of-interest detection unit detects the region of interest from the effective diagnosis region.

Abstract: A processor device and an endoscope system capable of calculating an optimal index value in accordance with a diagnosis purpose is provided. A processor device includes an image acquisition unit, a diagnosis purpose acquisition unit, an index value storage unit, an index value selection unit, and an index value calculation unit. The image acquisition unit acquires an endoscope image obtained by an endoscope image-capturing an observation object. The diagnosis purpose acquisition unit acquires a diagnosis purpose. The index value storage unit stores correspondence between the diagnosis purpose and a plurality of index values relating to a structure of the observation object. The index value selection unit refers to the index value storage unit and selects the index value that is used for the acquired diagnosis purpose. The index value calculation unit uses the endoscope image and calculates the selected index value.