Abstract:
A light source device includes a semiconductor light source that radiates light at a light quantity according to an applied current, a circuit that determines a current instruction value based on control information, first and second drive units, each of the units that is connected to the semiconductor light source and the circuit, and is capable of outputting, to the semiconductor light source, a current having magnitude corresponding to the current instruction value. The control information is set based on brightness of an image captured by an imaging element. When one of the first and second drive units is switched to the other, the circuit causes the other to start the current output after an elapse of a predetermined stop time period having a length at a predetermined ratio or less to a frame rate on the imaging element since a stop of the current output from the one.
Abstract:
An image processing apparatus processes a first image signal including pixel signals, the first image signal having a picture portion in which a subject is shown and having a blank portion surrounding the picture portion. The apparatus includes: a blank detection unit configured to set similar frames different in size from one another within a display area of a screen representing the first image signal, in a stepwise manner from an outer periphery, and to detect the blank portion based on whether or not a part of the pixel signals belonging to a region outside each of the similar frames has the uniform color or brightness; a region-of-interest setting unit configured to set an initial region-of-interest corresponding to the picture portion in the first image signal, based on the blank portion; and a region-of-interest image generation unit configured to generate a region-of-interest image signal representing the initial region-of-interest.
Abstract:
An image pickup apparatus includes an endoscope configured to have an image pickup section in which a plurality of pixels are provided, and a storage section configured to store scope individual information, a binning processing section configured to split an image into a plurality of regions so that one region includes a plurality of pixel signals, and add up the pixel signals for each region to obtain a binning pixel signal, a binning brightness detection section configured to detect brightness of the region, a blend processing section configured to set a weight in the region on the basis of the brightness, and weight and composite the pixel signals and the binning pixel signal to generate a composite image, and a control section configured to control the binning processing section in accordance with the scope individual information.
Abstract:
An image pickup apparatus includes a light source apparatus emitting a first or a second illumination light to an object, an image pickup device acquiring an image of the object, and a CPU switching between a first mode where the image is picked up with the first illumination light and a second mode where the image is picked up with the second illumination light, being able to set at least one of a processing parameter for processing an image and a brightness control parameter before switching the illumination light to the illumination light corresponding to the mode or after switching to the corresponding illumination light is completed, and controlling whether the processing parameter is set before switching of the illumination light is started or after switching is completed according to the mode switching from the first to the second mode or from the second to the first mode.
Abstract:
A light source device for endoscope includes: an irradiation portion capable of radiating excitation light; a rotating body provided on an optical axis of the excitation light and configured to rotate with a rotating shaft as a center; a phosphor arranged in an irradiation area of the excitation light, and configured to generate fluorescence by being irradiated with the excitation light; a light quantity control portion configured to control irradiation intensity or irradiation time of the excitation light; and a rotation control portion configured to rotate the rotating body at a predetermined speed when the excitation light is radiated with a first irradiation intensity or time and rotate the rotating body faster than the predetermined speed when reducing the irradiation intensity or the irradiation time of the excitation light is reduced in the irradiation intensity or time vis-a-vis the first ones.
Abstract:
An endoscope apparatus has an illuminating unit that performs illumination with a first light once and performs illumination with a second light a plurality of times within a predetermined time period, an image pickup unit that outputs a first image pickup signal based on the illumination with the first light and a second image pickup signal based on the illumination with the second light, a clipping processing unit that clips the first and the second image pickup signals, a brightness calculating unit that calculates a first brightness, a composite ratio calculating unit that calculates a composite ratio according to a brightness target value and the first brightness, a composite processing unit that combines the first and the second image pickup signals according to the composite ratio, and a setting unit that sets a clip level according to the composite ratio.
Abstract:
An endoscope system includes: an endoscope having an image sensor configured to image an inside of a subject; a processor configured to perform predetermined image processing on a video signal that is imaged by the image sensor; a storage that is provided in the endoscope, the storage being configured to store compressed data obtained by compressing data volume of first non-compressed data that is used for correction of an image imaged by the image sensor; a restoring circuit configured to read the compressed data from the storage to restore the compressed data to the first non-compressed data when data is transferred from the endoscope to the processor; and an image correcting circuit that is provided in the endoscope, the image correcting circuit being configured to correct the image imaged by the image sensor by using the first non-compressed data restored by the restoring circuit.
Abstract:
An endoscope apparatus includes a detecting section to which an observation image of a subject is sequentially inputted, the detecting section being configured to detect a characteristic region in the observation image based on a predetermined feature value concerning the observation image, and an emphasis processing section configured to apply, when the characteristic region is continuously detected in the detecting section, emphasis processing of a position corresponding to the characteristic region to the observation image of the subject inputted after elapse of a first predetermined time period from a time when the characteristic region is detected.
Abstract:
An endoscope image processing apparatus includes a detection section configured to receive an observation image of a subject, to detect a feature region in the observation image based on a predetermined feature value for the observation image, and further to output a parameter relating to an erroneous detection rate of the detected feature region, a notification section configured to notify, to a surgeon, detection of the feature region in the observation image through notification processing and to generate a first display image including the observation image in a case where the feature region is detected by the detection section, and an enhancement processing section configured to generate a second display image in the observation image to allow the surgeon to estimate probability of erroneous detection from a display image in the case where the feature region is detected by the detection section.
Abstract:
A video processor for an endoscope includes an image memory, an image processing unit, a display control unit and a recording unit. The image memory stores, as a sample image, an endoscope image which a user previously acquired. The image processing unit performs the image processing for changing an image quality of the sample image in accordance with a selection value selected by a user and produces a processed image. The display control unit causes a display unit to display the processed image. The recording unit records, as a setting value, a value relating to the selection value determined by the user. The image processing unit performs the image processing, based on the setting value, for the endoscope image.