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Endoscope device

A technology of endoscopy and content, applied in the fields of endoscopy, medical science, surgery, etc., can solve the problems of color ripples, false colors, etc.

Active Publication Date: 2015-05-20
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, as in the above-mentioned second conventional example, if enhancement processing is performed on color difference signals in addition to luminance signals, reproducibility can be improved. False color and color moiré occur at the edge of the signal

Method used

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Experimental program
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no. 1 approach

[0031] Such as figure 1 As shown, the endoscope device 1 of the first embodiment includes an electronic endoscope (hereinafter simply referred to as an endoscope) 2 inserted into a body cavity for endoscopic inspection, and a light source for supplying illumination light to the endoscope 2. device 3. In addition, this endoscope device 1 includes: a video processor 4 as an endoscope video signal processing device, which drives an imaging unit built in the endoscope 2, and performs signal processing on an output signal of the imaging unit; The device 5 receives the video signal output from the video processor 4 and displays an image obtained by signal processing the captured image captured by the imaging unit as an endoscopic image.

[0032] The endoscope 2 has: an elongated insertion part 7; an operation part 8 provided at the rear end of the insertion part 7; and a universal cable 9 extending from the operation part 8, and a light guide at the end of the universal cable 9 T...

no. 2 approach

[0190] Figure 8 The overall configuration of an endoscope apparatus 1C according to the second embodiment of the present invention is shown. This endoscope device 1C is composed of an endoscope 2C, a light source device 3 , a video processor 4C, and a monitor 5 .

[0191] Endoscope 2C example instead of figure 1 The complementary color monolithic imaging element in the endoscope 2 adopts the primary color monolithic imaging element. That is to say, in the photographing surface of CCD29 if Figure 9 A primary color monolithic Bayer array color filter 30c is used as shown.

[0192] The color filter 30 c forms a filter array periodically arranged in the horizontal and vertical directions in units of four filter elements in two rows and two columns in the horizontal and vertical directions. In this case, R, G and G, B color filter elements are arranged alternately in the horizontal direction and the vertical direction.

[0193] For example, CCD 29 is driven by CCD drive cir...

no. 3 approach

[0221] Figure 12 The overall configuration of an endoscope device 1D according to a third embodiment of the present invention is shown. This endoscope device 1D is composed of an endoscope 2D, a light source device 3 , a video processor 4D, and a monitor 5 . Endoscope 2D is instead configured in figure 1 One imaging element (composed imaging section) on the front end portion 26 of the insertion portion 7 in the endoscope 2 is mounted, and an imaging section composed of three primary color imaging elements is mounted.

[0222] On the optical axis of the objective lens 28 are provided color separation prisms 61a, 61b, 61c as color separation parts for color separation into R, G, B, and three CCDs 29R, 29G, 29B arranged at imaging positions, respectively. Therefore, in this case, the three CCDs 29R, 29G, and 29B output color signals of R, G, and B on a pixel-by-pixel basis. In the present embodiment, such a pixel corresponds to an array of units when color imaging is perform...

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Abstract

An endoscope apparatus picks up an image by a returning light from a subject illuminated by illumination means by a CCD equipped with a color filter, and when performing emphasis processing on sharpness by an emphasis processing circuit with respect to a luminance signal Y and a color difference signal R-Y, B-Y as an image signal generated through a Y / C separation circuit or the like, switches emphasis processing characteristics according to an observation mode and a type of the CCD, to reduce false color, color moiré.

Description

technical field [0001] The present invention relates to an endoscope device that performs image processing on an imaging unit mounted in an endoscope. Background technique [0002] In recent years, electronic endoscopes equipped with imaging units have been widely used in various endoscopic inspections and the like. [0003] In the case of performing endoscopic inspection, there are the following endoscopic devices: a simultaneous type endoscopic device that uses an electronic endoscope equipped with an imaging element equipped with a color filter under illumination with white light to Color imaging; and an endoscope device of a plane sequential method, which uses an electronic endoscope equipped with a monochromatic imaging element to perform photographing under the sequential illumination lights of R, G, and B planes, wherein both The signal processing system (image processing system) is different. [0004] Japanese Patent No. 4009626 discloses, as a first conventional e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/04A61B1/00
CPCA61B1/00059A61B1/00186A61B1/043A61B1/051A61B1/0638A61B1/0646A61B1/0669A61B1/00009A61B1/0655
Inventor 山崎健二
Owner OLYMPUS CORP