PROBLEM TO BE SOLVED: To provide an endoscope apparatus which does not need adjustment of a captured image by an operator, even when a portion captured from a proximal end and a portion captured from a distal end are mixed in one captured image, and which can obtain a captured image that is optimal and bright in relation to endoscopic observation of a lesion part, surface layer fine blood vessels and the like.SOLUTION: The endoscope apparatus 10 includes: light source means 14, 24 for irradiating a subject with illumination light an imaging means 26 for capturing the capturing image by return light from a living body being the subject and outputting a captured image signal a density calculating means for calculating the density of each pixel of the captured image and an image processing means 36 for performing predetermined image processing to the captured image. The image processing means 36 changes frequency processing conditions with respect to the captured image such that the detection and enhancement degree of the structure and components of the living body in the subject are changed according to at least the density of each pixel of the captured image.COPYRIGHT: (C)2012,JPO&INPIT【課題】1枚の撮像画像の中に近位から撮像した部分と遠位から撮像した部分との両方が混在する場合でも、操作者が撮像画像の調整をする必要がなく、病変部や表層微細血管等の内視鏡観察に最適かつ明るい撮像画像を得る。【解決手段】被写体に対して照明光を照射する光源手段14、24と、被写体である生体からの戻り光により、撮像画像を撮像し、撮像画像信号を出力する撮像手段26と、撮像画像の各画素の濃度を算出する濃度算出手段と、撮像画像に所定の画像処理を施す画像処理手段36と、を有し、画像処理手段36は、少なくとも撮像画像の各画素の濃度に応じて、被写体における生体の構造・成分の検出及び強調度を変化させるように、撮像画像に対する周波数処理条件を変更することを特徴とする内視鏡装置10を提供することで上記課題を解決する。【選択図】図1
