Endoscope apparatus

Abstract

An endoscope apparatus includes: a video signal acquisition portion that images an object to acquire a video signal by a stereo optical system; a video signal processing portion that processes the video signal to generate a display video signal; a measurement processing portion that performs measurement on the basis of the video signal; and a display portion that displays the display video signal. The video signal processing portion generates the display video signal by extracting one image from the video signal including a plurality of images from the stereo optical system, and the display portion displays the display video signal including the one image extracted by the video signal processing portion during a period regarding measurement. The measurement processing portion calculates a matching degree between the plurality of images at a position corresponding to the measuring position. The display portion displays the matching degree together with the display video signal.

1 . An endoscope apparatus comprising:
 a video signal acquisition portion that images a test subject by a stereo optical system to acquire a video signal;   a video signal processing portion that processes the video signal to generate a display video signal;   a measurement processing portion that performs measurement on the basis of the video signal;   a display portion that displays the display video signal; and   a measuring position input portion that inputs a measuring position based on the display video signal,   wherein the video signal processing portion generates the display video signal by extracting one image from the video signal including a plurality of images from the stereo optical system,   the display portion displays the display video signal including the one image extracted by the video signal processing portion during a period regarding measurement,   the measurement processing portion calculates a matching degree between the plurality of images at a position corresponding to the measuring position, and   the display portion displays the matching degree together with the display video signal.   
     
     
         2 . The endoscope apparatus according to  claim 1 ,
 wherein the video signal processing portion outputs, as the display video signal, the video signal including the plurality of images from the stereo optical system when matching precision indicated by the matching degree is equal to or less than a predetermined value.   
     
     
         3 . The endoscope apparatus according to  claim 1 ,
 wherein the measuring position input portion inputs a measuring position again when matching precision indicated by the matching degree is equal to or less than a predetermined value.   
     
     
         4 . An endoscope apparatus comprising:
 a video signal acquisition portion that images a test subject by a stereo optical system to acquire a video signal;   a video signal processing portion that processes the video signal to generate a display video signal;   a measurement processing portion that performs measurement on the basis of the video signal;   a display portion that displays the display video signal; and   an instruction input portion that inputs an instruction for switching of a displayed image,   wherein the video signal processing portion generates a first display video signal based on one image extracted from the video signal including a plurality of images from the stereo optical system, and a second display video signal based on the one image and other image of the video signal, and   the display portion displays one of the first display video signal and the second display video signal during a period regarding measurement, in response to an instruction input by the instruction input portion.   
     
     
         5 . The endoscope apparatus according to  claim 4 ,
 wherein when the second display video signal is generated, the video signal processing portion processes the video signal such that the one image is displayed so as to overlap the other image.   
     
     
         6 . The endoscope apparatus according to  claim 4 ,
 wherein when the second display video signal is generated, the video signal processing portion processes the video signal such that the one image is displayed so as to overlap the other image and the one image is enlarged.   
     
     
         7 . The endoscope apparatus according to  claim 4 ,
 wherein when the second display video signal is generated, the video signal processing portion processes the video signal such that the other image is displayed so as to overlap the one image.   
     
     
         8 . The endoscope apparatus according to  claim 4 ,
 wherein when the second display video signal is generated, the video signal processing portion processes the video signal such that the other image is displayed so as to overlap the one image and the other image is enlarged.   
     
     
         9 . The endoscope apparatus according to  claim 4 ,
 wherein when the first display video signal is generated, the video signal processing portion processes the video signal such that the one image is enlarged.   
     
     
         10 . The endoscope apparatus according to  claim 9 ,
 wherein the video signal processing portion processes the video signal such that the entire one image is enlarged.   
     
     
         11 . The endoscope apparatus according to  claim 9 ,
 wherein the video signal processing portion processes the video signal such that a predetermined region of the one image is enlarged.   
     
     
         12 . The endoscope apparatus according to  claim 9 , further comprising:
 a measuring position input portion that inputs a measuring position based on the first display video signal,   wherein the measuring position input portion inputs the measuring position on the first display video signal enlarged by the video signal processing portion.   
     
     
         13 . The endoscope apparatus according to  claim 12 ,
 wherein the period regarding measurement includes a period for which the measuring position input portion inputs the measuring position.   
     
     
         14 . The endoscope apparatus according to  claim 13 ,
 wherein the measurement processing portion performs measurement on the basis of the video signal including the plurality of images from the stereo optical system.   
     
     
         15 . The endoscope apparatus according to  claim 4 , further comprising:
 a control portion that performs a control of storing the video signal including the plurality of images from the stereo optical system in a storage medium.   
     
     
         16 . The endoscope apparatus according to  claim 15 ,
 wherein the control portion reads the video signal stored in the storage medium and makes the video signal processing portion generate from the read video signal the first display video signal including the one image,   the display portion displays the first display video signal, and   the measurement processing portion performs measurement on the basis of the video signal stored in the storage medium.