摘要:
An endoscope system has an optical fiber configured to transmit illumination light emitted from a light source to the tip portion of a scope; a scanner configured to spirally scan a target area with illumination light by vibrating the tip portion of said optical fiber; and an image generator configured to generate image data from image-pixel signals obtained from the light reflected from the target area. Then, the scanner scans the illumination light in a circular motion midway through a spiral scanning procedure.
摘要:
An endoscope apparatus, comprising an imaging controller, a receiver, and an image generator, is provided. The imaging controller makes an optical image to be captured so that the amount of optical information to be captured per a certain area size for an enlarged observation area is greater than that for a normal observation area. The receiver receives the optical information as a pixel signal. The image generator generates a normal image signal corresponding to a normal image on the basis of the pixel signals captured within the normal observation area and a part of the pixel signals captured within the enlarged observation area. The image generator generates an enlarged image signal corresponding to an enlarged image on the basis of the pixel signals captured within the enlarged observation area.
摘要:
An electronic endoscope apparatus is provided that comprises an image-pickup device, an objective optical system, a compensation information storing memory, a mask data storing memory, and an electronic mask compensation processor. The objective optical system forms a subject image on an imaging surface of the image-pickup device. The compensation information storing memory stores compensation information which relates to a misalignment between an in-focus area produced by the objective optical system on the imaging surface, and an effective image sensing area of the image-pickup device. The mask data storing memory stores mask data for an electronic mask operation. The electronic mask compensation processor translates an electronic mask area in accordance with the compensation information.
摘要:
In an electronic endoscope system, a scope has a solid-state image sensor provided at a distal end thereof to generate image-pixel signals. An image-signal processing unit produces a video signal based on the image-pixel signals. An alteration system alters a peak-to-peak level of a synchronizing-signal component of the video signal. An manual setting system operates the alteration system to perform the alteration of the level of the synchronizing-signal component. An indicator system indicates the degree of alteration to the level of the synchronizing-signal component during the operation of the manual setting system.
摘要:
Disclosed is an electronic endoscope system which includes an endoscope unit having a solid-state imaging element which captures an image of an object and outputs an image signal, and a signal processing unit which receives the image signal from the imaging element and generates a plurality of digital video signals having different signal formats. The signal processing unit may have a plurality of signal output ports for outputting the plurality of digital video signals having different signal formats, respectively. Alternatively or optionally, the signal processing unit may have at least one signal selector which selects one of the plurality of digital video signals having different signal formats, and at least one output port through which the one of the plurality of digital video signal selected by the signal selector is output.
摘要:
In an electronic endoscope system for detecting an image of an object using a CCD, a brightness signal is generated based on the output of the CCD, and a histogram processing is applied to the brightness signal. An aperture size for regulating the amount of light emitted to an object to be viewed is controlled in accordance with the calculation based on the histogram data.
摘要:
An electronic endoscope system which includes a device for detecting an image, and a device for inputting an information signal. The image detecting device outputs an electrical image signal, which is converted to an analog video signal and a digital video signal. The digital video signal is combined with the information signal by an image combining device, to form a digital information signal. The digital information signal is serially outputted to a device which displays the image data in accordance with the outputted serial digital information signal. The digital information signal is also serially outputted to a device which reproduces the information signal in accordance with the outputted serial digital information signal.
摘要:
An image-signal processing unit comprising a first and second luminance calculation block, a correction-value calculation block, and a subtraction block, is provided. The first luminance calculation block calculates a first luminance corresponding to the sum of a plurality of primary color light components. Each of them is multiplied by a coefficient from a first coefficient combination. The second luminance calculation block calculates a second luminance corresponding to the sum of a plurality of the primary color light components. Each of them is multiplied by a coefficient from a second coefficient combination. The correction-value calculation block calculates a luminance correction value according to the second luminance if the first luminance is greater than a threshold value. The subtraction block calculates a corrected luminance by subtracting the luminance correction value from the first luminance.
摘要:
An image data processor comprising an image signal receiver, a histogram generator, a gain calculator, an amplifier, and a signal feeder, is provided. The image signal receiver receives an autofluorescence image signal. The autofluorescence image signal is generated by an imaging device when the imaging device captures an autofluorescence image. The histogram generator generates a histogram of luminance in the autofluorescence image based on the autofluorescence image signal. The gain calculator calculates a gain based on the histogram and a predetermined luminance value. The amplifier amplifies the autofluorescence image signal by the gain. And then the amplifier generates an amplified autofluorescence image signal. The signal feeder outputs the amplified autofluorescence image signal to a monitor. The monitor displays an amplified autofluorescence image.
摘要:
An endoscope system has an optical fiber configured to transmit illumination light emitted from a light source to the tip portion of a scope; a scanner configured to spirally scan a target area with the illumination light by vibrating the tip portion of the optical fiber; and an image generator configured to generate an observation image from image-pixel signals that are obtained from light reflected off of the target area. The endoscope system further has a resolution adjuster that adjusts a resolution of the observation image in accordance to a photographic state by controlling at least one of either a movement (drive) of the fiber tip portion or a sampling of the image-pixel signals.