The endoscope apparatus includes an imaging unit that receives and captures return light including a plurality of wavelength band components generated by illumination light irradiation on a subject with different spectral sensitivities for each color component, and the imaging unit returns the return light A correction processing unit that performs correction processing on the spectral spectrum distribution for each color component included in the image of the subject obtained by imaging light, and each of the images included in the return light based on the result of the correction processing An image separation processing unit that performs processing for separating each wavelength band component.内視鏡装置は、被写体に対する照明光の照射に伴って発生する複数の波長帯域成分を含む戻り光を、各色成分毎に異なる分光感度で受光して撮像する撮像部と、撮像部が前記戻り光を撮像することにより得られる被写体の画像に含まれる各色成分毎の分光スペクトル分布に対して補正処理を施す補正処理部と、補正処理の結果に基づき、被写体の画像を戻り光に含まれる各波長帯域成分毎に分離する処理を行う画像分離処理部と、を有する。
