Abstract:
An endoscope apparatus includes: an illumination device emitting first and second lights; an imaging section capturing an image of return light from a subject based on emission by the illumination device; and a processor including hardware. The first light has a peak wavelength within a first wavelength range including a wavelength at which absorbance of a biological mucosa reaches a largest value. The second light has a peak wavelength within a second wavelength range including a wavelength at which absorbance of a muscle layer reaches a maximum value, and absorbance of the second light by fat is lower than that by the muscle layer. The processor displays the biological mucosa and the muscle layer in an identifiable manner based on a first image corresponding to the first light, and displays the muscle layer and the fat in an identifiable manner based on a second image corresponding to the second light.
Abstract:
An endoscope system includes an image acquisition section, an attention area setting section, and a scaling section. The image acquisition section acquires a captured image that includes an object image. The attention area setting section sets an attention area within the captured image based on information from the endoscope system. The scaling section performs a local scaling process that relatively enlarges the attention area as compared with another area.
Abstract:
An endoscope apparatus includes a processor. An image signal includes a first image signal corresponding to first light and a second image signal corresponding to second light. The processor determines at least one of whether or not a submucosa region or a bleeding region is included in an image based on the image signal. In a case where the submucosa region is included, the processor performs conversion processing that increases a combination ratio of the second image signal to the first image signal in an image region including the submucosa region, and allocates a combined image signal to a G-channel. In a case where the bleeding region is included, the processor performs conversion processing that increases a combination ratio of the first image signal to the second image signal in an image region including the bleeding region, and allocates the combined image signal to the G-channel.
Abstract:
An endoscope system includes an imaging section that captures an object via an optical system and an image sensor, an observation state determination section that determines the observation state of the object captured by the imaging section, and an aperture control section that controls the state of an aperture included in the optical system based on the observation state, the aperture control section controlling the state of the aperture so that the resolution determined by the diffraction limit due to the aperture is equal to or higher than a resolution determined by the image sensor when the observation state determination section has determined that the observation state is a first observation state, and stopping down the aperture as compared with the state of the aperture in the first observation state when the observation state determination section has determined that the observation state is a second observation state.
Abstract:
An endoscope apparatus includes comprises a processor. The processor causes the light source device to produce narrow band light as illumination light, and the narrow band light has a peak wavelength between a wavelength band including a local maximum of a hemoglobin absorption characteristic and a wavelength band including a local minimum of the hemoglobin absorption characteristic. The processor receives an image signal from the imaging device that outputs the image signal based on return light. The processor uses an image produced in response to the image signal to identify a state of the living body by identifying at least one of whether or not stomach mucosa is in a sterilized state, or whether or not the stomach mucosa is inflamed mucosa, outputs state identifying information indicating the state of the living body, and controls wavelength characteristics of the illumination light based on the state identifying information.
Abstract:
An endoscope apparatus includes: a light source device alternately emitting a first illumination light group including green light and a second illumination light group not including the green light; an image sensor including color filters of a plurality of colors; and a processing circuit. The processing circuit generates a display image on the basis of an image obtained with the first illumination light group and an image obtained with the second illumination light group. The first illumination light group further includes blue narrowband light together with the green light. The processing circuit generates a green channel image in the display image on the basis of a green image and a blue narrowband image.
Abstract:
An endoscope apparatus includes an illumination device generating illumination light including a first light, a second light, and a third light, an imaging device capturing an image based on return light from biological tissue, and a processor configured to perform image processing based on first, second, and third images respectively corresponding to the first light, the second light, and the third light. The first light has a peak wavelength within a predetermined wavelength range including a wavelength achieving a largest value of a hemoglobin absorption coefficient. The second light has a peak wavelength between a wavelength achieving a smallest value of the hemoglobin absorption coefficient and a wavelength achieving a first maximum value of the hemoglobin absorption coefficient on a shorter wavelength side of the wavelength achieving the smallest value. The third light has a peak wavelength between the peak wavelengths of the first light and the second light.
Abstract:
An image processing device includes a normal light image acquisition section that acquires a normal light image that includes an object image and includes information within a wavelength band of white light, a special light image acquisition section that acquires a special light image that includes an object image and includes information within a specific wavelength band, a correction section that performs a correction process on the special light image, and a blending section that performs a blending process that blends the normal light image and a corrected special light image that is the special light image corrected by the correction section. The blending section blends a component G of the normal light image and a component G of the corrected special light image, and blends a component B of the normal light image and a component B of the corrected special light image.
Abstract:
An endoscope apparatus has an image pickup device having a first pixel having a sensitivity in a predetermined wavelength band, and a second pixel having a sensitivity in a wavelength band including a part of the predetermined wavelength band, a light source section configured to generate a light for irradiating a subject, an intensity of which reaches a peak in the part of the predetermined wavelength band to which the second pixel has a sensitivity, and an addition section configured to generate an addition signal obtained by adding a first image pickup signal obtained by receiving a return light from the subject at a time of the subject being irradiated in the first pixel, and a second image pickup signal obtained by receiving a return light from the subject in the second pixel.
Abstract:
An endoscope apparatus includes: a light source that emits white light or narrow-band light; an image sensor having pixels; a color filter including a filter unit having a plurality of filters in which the number of filters for passing green wavelength band light and the number of filters for passing blue wavelength band light satisfy predetermined conditions; a first gain adjustment unit that adjusts a gain of an electric signal generated by the image sensor; a demosaicing processing unit that generates an image signal of a color component passing through a filter based on the electric signal whose gain has been adjusted by the first gain adjustment unit; a color conversion processing unit that performs color separation on an image signal when the light source unit emits the white light; and a second gain adjustment unit that adjusts a gain of each image signal subjected to the color conversion processing.