Olympus Corporation

Seigo On

Yasunori Morita

Naoya Kuriyama

Jumpei Takahashi

Masashi Hirota

Keiji Higuchi

Taketo Tsukioka

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.

Endoscope control device, method of changing wavelength characteristics of illumination light, and information storage medium

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.

Endoscope apparatus and operation method of endoscope apparatus

An endoscope system includes a first capsule endoscope device and a second capsule endoscope device. The first capsule endoscope device is introduced into a living body before the second capsule endoscope device is introduced. The first capsule endoscope device includes a first image sensor and a first processor that controls an imaging operation by the first image sensor. The second capsule endoscope device includes a second image sensor and a second processor that performs a change process for control on an imaging operation by the second image sensor based on first information on the first capsule endoscope device.

Endoscope system, capsule endoscope device, and method for operating endoscope system

A learning image automatic sorting device for sorting learning images to be stored while identifying and eliminating repeated images by discriminating the geometric deformation, changes in grayscale, the difference in noise level, and the like.

Learning image automatic sorting device, learning image automatic sorting method, and learning image automatic sorting program

A capsule endoscope includes an imaging device that captures time-series captured images and a processor including hardware. The processor implements a process that performs a first motion determination process with respect to the capsule endoscope based on the captured images to calculate a first motion determination result, and a communication process that transmits the captured images to an external device that is provided outside the capsule endoscope, and receives a second motion determination result, the second motion determination result being a result of a second motion determination process with respect to the capsule endoscope that was performed by the external device based on the captured images. The processor implements the process that controls the frame rate of the imaging device based on the first motion determination result and the second motion determination result.

Capsule endoscope, endoscope system, and method for operating capsule endoscope

An endoscope system includes an image acquisition section, an attention area setting section, and a dimming control 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 dimming control section performs a dimming control process that controls the intensity of illumination light based on the attention area set by the attention area setting section.

Endoscope system and method for operating endoscope system

The focus control device includes a focus control section that controls an imaging optical system that is configured so that an in-focus object plane position is changed when an imaging magnification is changed, an image acquisition section that acquires a plurality of images captured through the imaging optical system at a different imaging magnification, and a change-in-magnification detection section that detects a change in magnification that is at least one of a change in the imaging magnification and a change in size of an object within an image among the plurality of images, the focus control section driving the imaging optical system based on an AF evaluation value that indicates the focus state of the imaging optical system and calculated based on the image and the change in magnification to control focus of the imaging optical system.

Focus control device, endoscope system, and focus control method

An endoscope apparatus includes an imaging section, a selection section, and a shake correction section. The imaging section includes an imaging optical system and an imaging element, and captures images. The selection section selects shake correction parameter information from a plurality of pieces of shake correction parameter information based on the observation state of the imaging section. The shake correction section performs a shake correction process on the captured images based on the shake correction parameter information selected by the selection section.

Endoscope apparatus and shake correction processing method

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.

Endoscope system which enlarges an area of a captured image, and method for operating endoscope system

An image processing device includes a normal light image acquisition section that acquires a normal light image, the normal light image being an image that includes information within a wavelength band of white light, a special light image acquisition section that acquires a special light image, the special light image being an image that includes information within a specific wavelength band, a normal light motion vector information calculation section that calculates normal light motion vector information based on a feature quantity included in the normal light image, the normal light motion vector information indicating a motion vector between a plurality of normal light images, and a noise reduction section that reduces an amount of noise included in the special light image based on the normal light motion vector information calculated by the normal light motion vector information calculation section.

Image processing device and information storage medium including motion vector information calculation

An image signal processing apparatus including a first tone correcting section for generating a first image signal by performing a space-variant tone conversion process for a digitalized image signal from a CCD and an A/D converting section, a second tone correcting section for generating a second image signal by performing a space-invariant tone correction process for the digitalized image signal from the CCD and the A/D converting section, and a synthesizing section for setting a synthesis rate Rof the first image signal and a synthesis rate Rof the second image signal, and synthesizing the first image signal and the second image signal based on the set synthesis rates Rand R

Image signal processing apparatus and computer-readable recording medium recording image signal processing program

It is an object to reduce subjective noise. Provided is an image-signal processing device including an area dividing unit that divides image signals acquired by an image capturing element and subjected to predetermined image processing into a plurality of areas on the basis of color information and a noise reducing unit that performs different noise reduction processing on the individual areas of the image signals divided by the area dividing unit.

Image-signal processing device and image signal processing program

There is provided a moving image noise reduction processing apparatus for reducing noise in a digitalized time-series image signal, including: a spatial noise reduction unit applying spatial noise reduction processing to the image signal; a previous buffer unit storing an image signal to which at least the spatial noise reduction processing has been applied; and a temporal noise reduction unit performing temporal noise reduction processing based on an image signal to be processed to which the spatial noise reduction processing has been applied in the spatial noise reduction unit and an image signal which is stored in the previous buffer unit and is earlier than the image signal to be processed.

Moving image noise reduction processing apparatus, computer-readable recording medium on which moving image noise reduction processing program is recorded, and moving image noise reduction processing method

The object is to enable picture compositing having a balanced and uniform appearance over the whole image even when performing space-variant image-signal processing. Provided is an image-signal processing apparatus for performing image-signal processing on an input image signal, the image-signal processing apparatus comprising a first signal processing unit for performing first signal processing on the input image signal; a correction-coefficient calculating unit for calculating a first correction coefficient on the basis of the image signal after being subjected to the first signal processing by the first signal processing unit; and a second signal processing unit for performing second signal processing on the input image signal using the first correction coefficient.

Growing community of inventors

Hachioji, Japan

Seigo On