Abstract: An endoscope system includes an in-focus object plane position switch section that switches an in-focus object plane position of an imaging section, a target in-focus position determination section that calculates an in-focus evaluation value, and determines a target in-focus position based on the in-focus evaluation value, and a change-in-scene detection section that detects whether or not a change in scene has occurred based on a captured image. The target in-focus position determination section determines whether or not the in-focus evaluation value satisfies a determination criterion until the change-in-scene detection section detects that the change in scene has occurred, and selects the first in-focus object plane position or the second in-focus object plane position that is not currently selected by the in-focus object plane position switch section when it has been determined that the in-focus evaluation value does not satisfy the determination criterion.

Abstract: An imaging device includes an objective lens that includes a movable lens that is configured so that an in-focus object plane position is changed along with a change in angle of view, an image sensor that acquire an image, a focus control section that implements an autofocus (AF) operation by controlling a position of the movable lens, a reference lens position setting section that sets a reference lens position based on a moving range of the movable lens during a wobbling operation, the wobbling operation being performed every given cycle during the AF operation, and a magnification correction section that performs a magnification correction process that reduces a change in the angle of view of the image due to a change in the position of the movable lens during the wobbling operation relative to the reference lens position.

Abstract: An image processing apparatus that performs image registration processing between a plurality of images through a motion vector calculation sets a plurality of motion vector measurement regions on an image, calculates a motion vector in each of the plurality of motion vector measurement regions, specifies a region of interest on the image, determines whether or not each of the plurality of motion vector measurement regions is included in the region of interest, calculates a contribution of each motion vector such that the contribution of the motion vector of a motion vector measurement region included in the region of interest is larger than the contribution of the motion vector of a motion vector measurement region not included in the region of interest, and determines an inter-image motion vector by integrating the motion vectors calculated respectively in the plurality of motion vector measurement regions in accordance with the calculated contribution.

Abstract: The imaging device includes an imaging optical system that includes a movable lens that simultaneously adjusts the angle of view and the in-focus object distance, an image sensor, a plurality of phase sensors, an acquisition section (A/D conversion section) that acquires phase information from the plurality of phase sensors, a lens control section that controls the position of the movable lens, and a moving amount calculation section that calculates the moving amount of the movable lens necessary for implementing an in-focus state of an image formed on the image sensor due to light beams that have passed through the imaging optical system, based on a phase difference that is based on the phase information, the lens control section controlling the position of the movable lens based on the moving amount calculated by the moving amount calculation section.

Abstract: An imaging apparatus includes an imaging section that images an object, an observation mode setting section that sets an observation mode when the imaging section images the object, and a control section that controls an image read mode in which an image is read from the imaging section and a in-focus object plane of the imaging section based on the observation mode set by the observation mode setting section.

Abstract: An image processing apparatus includes a motion vector calculator and an alignment processing unit. The motion vector calculator calculates motion vector information between a fluorescence image of an observed region based on fluorescence generated from the observed region irradiated with excitation light, and a reflected-light image of the observed region based on reflected light from the observed region. The alignment processing unit corrects misalignment of an object between the fluorescence image and the reflected-light image of the observed region based on the motion vector information.

Abstract: An image processing apparatus includes an image acquisition section that acquires a plurality of images that differ in in-focus state, a reference point setting section that performs a reference point setting process on each of the plurality of images, the reference point setting process setting a reference point that is set to an attention area, a distance estimation section that estimates distance information about a distance to a corresponding point based on a pixel value corresponding to the reference point, the corresponding point being a point in real space that corresponds to the reference point, and an additional information generation section that generates additional information based on the estimated distance information, the additional information being information that is added to the attention area to which the reference point is set.

Abstract: A focus control device, an endoscope system, a focus control method, and the like can implement an autofocus operation in an appropriate state by setting a focus mode of an imaging optical system. The focus control device includes a focus control section that controls a focus of an imaging optical system that includes at least a zoom lens that adjusts an optical magnification, and sets a focus mode of the imaging optical system, and an image acquisition section that acquires an image through the imaging optical system, the focus mode including a fixed focus mode and an autofocus (AF) mode, and the focus control section switching the focus mode between the fixed focus mode and the AF mode corresponding to whether the zoom lens is positioned on a wide-angle side or a telescopic side relative to a reference point that is situated between a wide-angle end and a telescopic end.

Abstract: Provided is an imaging device that is equipped with an image acquisition element having color filters in prescribed arrays; a judgment unit that judges to which group individual pixels of a color image belong, the group being a group among a plurality of groups determined in accordance with the arrangement of color filters, and the color image being an image generated based on output signals from the image acquisition element; a storage unit in which the groups are stored in association with correction matrices; and a correction unit that obtains the correction matrices corresponding to groups to which each of the pixels belongs from the storage unit and that corrects the image signal values of individual pixels by using the obtained correction matrices.

Abstract: An image processing device includes a special light image acquisition section that acquires an image including an object image that includes information in a specific wavelength band as a special light image, an attention area detection section that detects an attention area based on a feature quantity of each pixel of the special light image, a disappearance determination section that determines whether or not the attention area has disappeared from a display target area based on a detection result for the attention area, the display target area being an area displayed on an output section, a guide information generation section that generates guide information about the attention area that has disappeared based on a determination result of the disappearance determination section, and an output control section that controls output of information including the guide information generated by the guide information generation section.

Abstract: The imaging device includes an image sensor that includes a plurality of pixels that generate an image signal from an object image that is formed by an imaging optical system, a scaling section that performs a scaling process on an original image that includes image signals that correspond to the plurality of pixels, and an output section that outputs an image after the scaling process as a scaled image, the scaling section performing the scaling process using a different scaling factor corresponding to the position of a pixel of interest within the scaled image, and the image sensor including pixels in a number larger than the number of pixels of the scaled image as the plurality of pixels.

Abstract: An endoscope apparatus includes an imaging section that includes a phase difference detection element for implementing phase detection autofocus, and acquires a captured image, a phase difference calculation section that calculates a phase difference based on a signal output from the phase difference detection element, a lens position selection section that selects a lens position that is either a near point-side lens position or a far point-side lens position based on the phase difference, the near point-side lens position and the far point-side lens position being discrete lens positions set in advance, and a driver section that changes a lens position of the imaging section to the lens position selected by the lens position selection section.

Abstract: An image processing device captures a normal light image of an observed region via a plurality of color filters having different spectral characteristics, respectively, generates a uniform image having low contrast by extracting each picture signal corresponding to a picture signal in a wavelength band for which light absorption characteristic of a contrast region in the observed region becomes low, and corrects each picture signal of a fluorescence image of the observed region by using the uniform image.

Abstract: An image processing apparatus for performing registration processing on a plurality of images by calculating a motion vector between the plurality of images includes a motion vector measurement region setting unit that sets a plurality of motion vector measurement regions for measuring the motion vector, a motion vector calculation unit that calculates motion vectors of the plurality of motion vector measurement regions, a motion vector reliability calculation unit that calculates a reliability of the motion vectors of the plurality of motion vector measurement regions on the basis of information relating to a local magnification of an optical system used to obtain the images, and a motion vector integration processing unit that determines an inter-image motion vector by integrating the motion vectors of the plurality of motion vector measurement regions in accordance with the reliability of the motion vectors.

Abstract: The image processing device includes: a first image acquisition section that acquires a first image, the first image being an image that includes an object image including information within a wavelength band of white light; a second image acquisition section that acquires a second image, the second image being an image that includes an object image including information within a specific wavelength band; a candidate attention area detection section that detects a candidate attention area based on a feature quantity of each pixel within the second image; a reliability calculation section that calculates reliability that indicates a likelihood that the candidate attention area is the attention area; and a display mode setting section that performs a display mode setting process that sets a display mode of an output image corresponding to the reliability calculated by the reliability calculation section.

Abstract: The image processing device includes: a first image acquisition section that acquires a first image, the first image being an image that includes an object image including information within a wavelength band of white light; a second image acquisition section that acquires a second image, the second image being an image that includes an object image including information within a specific wavelength band; a candidate attention area detection section that detects a candidate attention area based on a feature quantity of each pixel within the second image, the candidate attention area being a candidate for an attention area; a reliability calculation section that calculates reliability that indicates a likelihood that the candidate attention area is the attention area; and a display mode setting section that performs a display mode setting process that sets a display mode of an output image corresponding to the reliability calculated by the reliability calculation section.

Abstract: A control device includes an image acquisition section and a focus control section. The image acquisition section acquires an image captured by an imaging section. The focus control section performs a focus control process that focuses the imaging section on an object based on the acquired image. The focus control section performs the focus control process based on an image for which occurrence of a bright spot is suppressed.

Abstract: An imaging apparatus includes an image acquisition section, an exposure adjustment section, and a synthetic image generation section. The image acquisition section acquires a near point image in which a near-point object is in focus, and a far point image in which a far-point object positioned away as compared with the near-point object is in focus. The exposure adjustment section adjusts the ratio of the exposure of the near point image to the exposure of the far point image. The synthetic image generation section generates a synthetic image based on the near point image and the far point image acquired with exposure for which the ratio is adjusted.

Abstract: An image processing apparatus includes an image acquisition section that acquires a plurality of images that differ in in-focus state, a reference point setting section that performs a reference point setting process on each of the plurality of images, the reference point setting process setting a reference point that is set to an attention area, a distance estimation section that estimates distance information about a distance to a corresponding point based on a pixel value corresponding to the reference point, the corresponding point being a point in real space that corresponds to the reference point, and an additional information generation section that generates additional information based on the estimated distance information, the additional information being information that is added to the attention area to which the reference point is set.

Abstract: An image processing apparatus includes a motion vector calculator and an alignment processing unit. The motion vector calculator calculates motion vector information between a fluorescence image of an observed region based on fluorescence generated from the observed region irradiated with excitation light, and a reflected-light image of the observed region based on reflected light from the observed region. The alignment processing unit corrects misalignment of an object between the fluorescence image and the reflected-light image of the observed region based on the motion vector information.