Abstract: An endoscope system includes an endoscope and a processor device that includes a system controller formed of an image control processor. The system controller determines whether or not the endoscope is a length measurement-compatible endoscope in a case where the endoscope is connected to the processor device, and enables switching of a mode to a length measurement mode in a case where the endoscope is the length measurement-compatible endoscope.

Abstract: A balloon is attachably and detachably mounted on an insertion part of an endoscope. A distal end part provided at a distal end of the insertion part includes an image pickup optical system, an illumination optical system, and a beam light-emitting unit. A subject is irradiated with measurement light by the beam light-emitting unit. It is possible to recognize the position of a spot from a subject image, and to measure an observation distance to an object to be observed, the size of the object to be observed, and the like.

Abstract: An endoscope apparatus and a method of operating the endoscope apparatus that perform both illumination light observation and fluorescence observation by a simple configuration. At least a part of a wavelength region of excitation light is included in a first wavelength region where the absorption intensity of a fluorescent material is 10% or more of a first peak value. The wavelength region of the excitation light is included in a second wavelength region where the transmittance of a first spectral transmittance characteristic is 60% or more of a second peak value and a third wavelength region where the transmittance of a second spectral transmittance characteristic is 40% or less of a third peak value. A wavelength at which intensity of fluorescence is a peak is included in a fourth wavelength region where the transmittance of the second spectral transmittance characteristic is 80% or more of the third peak value.

Abstract: An endoscope system includes: an endoscope including a side-viewing observation unit that includes a field of view in a lateral direction of an insertion part to be inserted into an object to be observed and a second protruding portion that protrudes from the insertion part and forms a blind spot in the field of view of the side-viewing observation unit; an image acquisition unit that acquires a side-viewing observation image by using the side-viewing observation unit; a monitor that displays the side-viewing observation image; and a display control section that allows at least a part of the blind spot of the side-viewing observation image in which the second protruding portion is shown up not to be displayed, and displays the side-viewing observation image on the monitor.

Abstract: Provided are an endoscope system and a method of operating the same capable of assisting in capturing an image defined by guidelines. In order to obtain a reference-equivalent image equivalent to a predetermined reference image for each examination region, an examination image is acquired by imaging an examination region. An at-examination imaging condition acquisition unit acquires an at-examination imaging condition obtained at an acquisition timing of an examination image. A still image saving request signal output unit outputs a still image saving request signal for requesting saving of a still image of the examination image in a case where an at-examination imaging condition satisfies a reference imaging condition for obtaining a predetermined reference image for each examination region.

Abstract: An endoscope system includes a color image sensor, having pixels sensitive to plural colors different from one another, for imaging an object. Plural LEDs discretely generate light of colors different from one another, to apply polychromatic light constituted by spectrally combining the light of the colors to the object. A light source controller controls the plural LEDs, to correct an intensity ratio of an integrated emission intensity between the plural colors according to receiving the first polychromatic light with respectively the pixels of the plural colors, so that the intensity ratio becomes equal to a target ratio of an integrated emission intensity between the plural colors according to receiving continuous spectrum light with respectively the pixels of the plural colors, the continuous spectrum light having an at least partial wavelength range of light emitted by a white light source.

Abstract: An endoscope apparatus and a method of operating the endoscope apparatus that perform both illumination light observation and fluorescence observation by a simple configuration. At least a part of a wavelength region of excitation light is included in a first wavelength region where the absorption intensity of a fluorescent material is 10% or more of a first peak value. The wavelength region of the excitation light is included in a second wavelength region where the transmittance of a first spectral transmittance characteristic is 60% or more of a second peak value and a third wavelength region where the transmittance of a second spectral transmittance characteristic is 40% or less of a third peak value. A wavelength at which intensity of fluorescence is a peak is included in a fourth wavelength region where the transmittance of the second spectral transmittance characteristic is 80% or more of the third peak value.

Abstract: An endoscope system includes: an endoscope including a side-viewing observation unit that includes a field of view in a lateral direction of an insertion part to be inserted into an object to be observed and a second protruding portion that protrudes from the insertion part and forms a blind spot in the field of view of the side-viewing observation unit; an image acquisition unit that acquires a side-viewing observation image by using the side-viewing observation unit; a monitor that displays the side-viewing observation image; and a display control section that allows at least a part of the blind spot of the side-viewing observation image in which the second protruding portion is shown up not to be displayed, and displays the side-viewing observation image on the monitor.

Abstract: First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process and a second process are performed. In the first process, coordinates which correspond to the first, second, and third observation areas are moved in a parallel manner such that the coordinates which correspond to the second observation area are moved to a reference area that contains the origin point. In the second process, the coordinates which correspond to the first observation area and the coordinates which correspond to the third observation area are moved away from each other.

Abstract: First RGB image signals are inputted. A first B/G ratio and a first G/R ratio are calculated. The first B/G ratio and the first G/R ratio are converted into a second B/G ratio and a second G/R ratio, respectively, through a color information conversion process. Owing to the color information conversion process, a difference between first and second observation areas in a second signal ratio space formed by the second B/G ratio and the second G/R ratio is greater than a difference between the first and second observation areas in a first signal ratio space formed by the first B/G ratio and the first G/R ratio, and a difference between the first and third observation areas in the second signal ratio space is greater than a difference between the first and third observation areas in the first signal ratio space.

Abstract: RGB image signals are inputted. A B/G ratio is calculated from the B and G image signals. A G/R ratio is calculated from the G and R image signals. First, second, and third areas are located in a feature space formed by the B/G and G/R ratios. An equal angular magnification process is performed on an angle in a region R1x including a first reference line passing through the second area. An angle expansion process or an angle compression process is performed on an angle in a region R1y located outside the region R1x. An equal radial-coordinate magnification process is performed on a radial coordinate in a region R2x, which includes a second reference line passing through the second area and intersecting the first reference line. A radial-coordinate expansion process or a radial-coordinate compression process is performed on a radial coordinate in a region R2y located outside the region R2x.

Abstract: RGB image signals are inputted. B/G ratio is calculated based on B image signal and G image signal. G/R ratio is calculated based on the G image signal and R image signal. In a feature space formed by the B/G ratio and the G/R ratio, a third process for increasing a difference in saturation between coordinates in a first observation area and coordinates in a second observation area is performed. In the first observation area, coordinates corresponding to a portion infected with H. pylori are distributed. In the second observation area, coordinates corresponding to a portion in which eradication of the H. pylori infection has been successful are distributed.

Abstract: First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process is performed such that coordinates corresponding to a second observation area are moved to a reference area containing the origin point while coordinates corresponding to first and third observation areas are maintained unchanged. A second process is performed to move the coordinates corresponding to the first observation area and the coordinates corresponding to the third observation area away from each other.

Abstract: An endoscope system includes a color image sensor, having pixels sensitive to plural colors different from one another, for imaging an object. Plural LEDs discretely generate light of colors different from one another, to apply polychromatic light constituted by spectrally combining the light of the colors to the object. A light source controller controls the plural LEDs, to correct an intensity ratio of an integrated emission intensity between the plural colors according to receiving the first polychromatic light with respectively the pixels of the plural colors, so that the intensity ratio becomes equal to a target ratio of an integrated emission intensity between the plural colors according to receiving continuous spectrum light with respectively the pixels of the plural colors, the continuous spectrum light having an at least partial wavelength range of light emitted by a white light source.

Abstract: An optimal value calculator calculates, based on angle information obtained from a first angle sensor provided in an ultrasound probe, the direction of transmission of an ultrasonic beam transmitted from the ultrasound probe, and the radiation source optimal angle of a radiation source at which the direction of radiation from the radiation source is substantially parallel to the calculated direction of transmission of the ultrasonic beam and the optimal detection angle of a radiographic image generator at which the normal of a detection surface of the radiographic image generator is substantially parallel to the calculated direction of transmission of the ultrasonic beam.

Abstract: RGB image signals are inputted. A B/G ratio is calculated from the B and G image signals. A G/R ratio is calculated from the G and R image signals. First, second, and third areas are located in a feature space formed by the B/G and G/R ratios. An equal angular magnification process is performed on an angle in a region R1x including a first reference line passing through the second area. An angle expansion process or an angle compression process is performed on an angle in a region R1y located outside the region R1x. An equal radial-coordinate magnification process is performed on a radial coordinate in a region R2x, which includes a second reference line passing through the second area and intersecting the first reference line. A radial-coordinate expansion process or a radial-coordinate compression process is performed on a radial coordinate in a region R2y located outside the region R2x.

Abstract: RGB image signals are inputted. B/G ratio is calculated based on B image signal and G image signal. G/R ratio is calculated based on the G image signal and R image signal. In a feature space formed by the B/G ratio and the G/R ratio, a third process for increasing a difference in saturation between coordinates in a first observation area and coordinates in a second observation area is performed. In the first observation area, coordinates corresponding to a portion infected with H. pylori are distributed. In the second observation area, coordinates corresponding to a portion in which eradication of the H. pylori infection has been successful are distributed.

Abstract: First RGB image signals are inputted. A first B/G ratio and a first G/R ratio are calculated. The first B/G ratio and the first G/R ratio are converted into a second B/G ratio and a second G/R ratio, respectively, through a color information conversion process. Owing to the color information conversion process, a difference between first and second observation areas in a second signal ratio space formed by the second B/G ratio and the second G/R ratio is greater than a difference between the first and second observation areas in a first signal ratio space formed by the first B/G ratio and the first G/R ratio, and a difference between the first and third observation areas in the second signal ratio space is greater than a difference between the first and third observation areas in the first signal ratio space.

Abstract: First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process is performed such that coordinates corresponding to a second observation area are moved to a reference area containing the origin point while coordinates corresponding to first and third observation areas are maintained unchanged. A second process is performed to move the coordinates corresponding to the first observation area and the coordinates corresponding to the third observation area away from each other.

Abstract: First RGB image signals are inputted. Color difference signals Cr and Cb are calculated from the first RGB image signals. In a feature space formed by the color difference signals Cr and Cb, a first process and a second process are performed. In the first process, coordinates which correspond to the first, second, and third observation areas are moved in a parallel manner such that the coordinates which correspond to the second observation area are moved to a reference area that contains the origin point. In the second process, the coordinates which correspond to the first observation area and the coordinates which correspond to the third observation area are moved away from each other.