ULTRASONIC ENDOSCOPE SYSTEM

PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope system capable of appropriately maintaining brightness of a subject image.SOLUTION: In an ultrasonic endoscope system equipped with an ultrasonic endoscope 100 with a probe 121 and an image pickup device 149 disposed at the tip, and a processo...

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Bibliographic Details
Main Authors HAGIWARA MASAYUKI, NISHIO JUNJI, SHOJI TAKAAKI
Format Patent
LanguageEnglish
Japanese
Published 16.11.2017
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope system capable of appropriately maintaining brightness of a subject image.SOLUTION: In an ultrasonic endoscope system equipped with an ultrasonic endoscope 100 with a probe 121 and an image pickup device 149 disposed at the tip, and a processor 220, a signal processing pre-stage part 148 detects a region of a probe image 410 in a pixel signal for one field/frame output from the image pickup device 149 (an output image) by edge detection. A dimming signal correction circuit 152 causes an output level of the pixel signal in the probe image 410 to be an output average value of a pixel signal output level of an observation part 420 other than the probe image. The corrected pixel signal for one field/frame is output to the processor 220 as a dimming signal.SELECTED DRAWING: Figure 3 【課題】被写体像の明るさを適切に維持できる超音波内視鏡システムを提供する。【解決手段】プローブ１２１および撮像素子１４９を先端部に設けた超音波内視鏡１００と、プロセッサ２２０とを備えた超音波内視鏡システムにおいて、信号処理前段部１４８は、撮像素子１４９から出力される１フィールド／フレーム分の画素信号（出力画像）の中で、プローブ像４１０の領域をエッジ検出によって検出する。そして、調光信号補正回路１５２は、プローブ像４１０内の画素信号の出力レベルを、プローブ像以外の観察部分４２０の画素信号出力レベルの出力平均値にする。補正された１フィールド／フレーム分の画素信号は、調光信号としてプロセッサ２２０へ出力する。【選択図】図３
Bibliography:Application Number: JP20160094090