PROBLEM TO BE SOLVED: To provide a noise removal device performing noise suppression processing for attenuating a specific frequency component included in a video signal of an endoscope observation image only under a situation where an unnecessary radiated electric wave occurs.SOLUTION: This noise removal device includes: an acquisition part acquiring the video signal based on the observation image obtained by an endoscope a filtering part attenuating the specific frequency component included in the video signal by filter processing a detection part detecting drive operation of a treatment device performing cauterization treatment a changeover part changing over ON/OFF of the filter processing to the video signal according to whether or not the drive operation of the treatment device is detected as the result of the detection and an output part outputting the acquired video signal or the video signal after the filter processing.COPYRIGHT: (C)2013,JPO&INPIT【課題】不要輻射電波が発生する状況下でのみ、内視鏡観察像の映像信号に含まれる特定の周波数成分を減衰させるノイズ抑制処理を行うノイズ除去装置を提供する。【解決手段】ノイズ除去装置は、内視鏡により得られた観察像に基づく映像信号を取得する取得部と、映像信号に含まれる特定の周波数成分をフィルタ処理により減衰させるフィルタリング部と、焼灼処置を行う処置装置の駆動動作の検知を行う検知部と、検知の結果、処置装置の駆動動作を検知したか否かに応じて、映像信号に対するフィルタ処理のON/OFFを切り替える切替部と、取得した映像信号またはフィルタ処理後の映像信号を出力する出力部とを備えるにより、上記課題の解決を図る。【選択図】 図1
