PROBLEM TO BE SOLVED: To provide an electronic endoscope apparatus which can automatically perform the optimal enhancing processing.SOLUTION: The electronic endoscope apparatus which includes an electronic endoscope which outputs an endoscope image as an image signal, a monitor, and a processor for an electronic endoscope which processes an image signal and forms a video signal which can be displayed on a monitor, includes a distance measuring instrument which measures the distance between a monitor and an observer located in the front surface of the monitor, wherein the processor for an electronic endoscope includes a signal processing circuit which forms an image from an image signal and performs an enhancing processing centering on the predetermined spatial frequency of the image, wherein the signal processing circuit alters the predetermined spatial frequency based on the distance measured by the distance measuring instrument.COPYRIGHT: (C)2012,JPO&INPIT【課題】最適なエンハンス処理を自動で行うことを可能にした電子内視鏡装置を提供する。【解決手段】内視鏡画像を映像信号として出力する電子内視鏡と、モニタと、映像信号を処理してモニタに表示可能なビデオ信号を生成する電子内視鏡用プロセッサとを備えた電子内視鏡装置が、モニタと該モニタの前面に位置する観察者との距離を測定する距離測定手段を備え、電子内視鏡用プロセッサは、映像信号から画像を生成し、該画像の所定の空間周波数を中心にエンハンス処理する信号処理回路を備え、信号処理回路は、距離測定手段によって測定された距離に基づいて所定の空間周波数を変更する。【選択図】 図1
