PROBLEM TO BE SOLVED: To provide an endoscope device which enables outputting an image having a clearly distinct contour as a whole, regardless of a type of an optical adapter.SOLUTION: An endoscope device 1 according to the present invention includes: an image element 21 that is provided at a top edge of a scope 2 and obtains an image of an object and an objective lens section 31 that forms the image of the object to the image element 21. The endoscope device further includes: an optical adapter 3 detachably connected to the top edge of the scope 2 a distance measuring section 411 for measuring a distance between the optical adapter 3 and the object on the basis of an image signal output from the image element 21 a contour emphasizing setting section 412 for setting a processing condition of a contour emphasizing process of the image signal output from the image element 21 on the basis of optical characteristics of the optical adapter 3 that is connected to the scope 2 and a measured distance between the optical adapter 3 and the object measured by the distance measuring section 411 and a contour emphasizing processing section 46 for performing a contour emphasizing process in accordance with the processing condition set by the contour emphasizing setting section 412 for the image signal obtained by the image element 21.COPYRIGHT: (C)2015,JPO&INPIT【課題】光学アダプタの種別によらず、全体にわたって輪郭が明瞭である画像を出力することができる内視鏡装置を提供すること。【解決手段】本発明にかかる内視鏡装置1は、スコープ2の先端に設けられて被写体の像を撮像する撮像素子21と、被写体の像を撮像素子21に結像する対物レンズ部31を備え、スコープ2の先端に着脱可能に接続する光学アダプタ3と、撮像素子21が出力した撮像信号をもとに光学アダプタ3と被写体との距離を計測する測距部411と、スコープ2に接続する光学アダプタ3の光学特性と測距部411による光学アダプタ3と被写体との計測距離とに応じて撮像素子21が出力した撮像信号に対する輪郭強調処理の処理条件を設定する輪郭強調設定部412と、撮像素子21が撮像した撮像信号に対し輪郭強調設定部412が設定した処理条件にしたがって輪郭強調処理を行う輪郭強調処理部46とを備える。【選択図】図1