An image processing apparatus according to the present disclosure is an imaging part capable of capturing an image of a heart from a surface of a body, a acquiring part for acquiring outer diameter information of a tubular member inserted into the heart, and an image processing part for correcting an outline of the tubular member in the image based on the outside diameter information acquired by the acquisition part .本開示に係る画像処理装置は、体表面から心臓の画像を撮像可能な撮像部と、前記心臓内に挿入される管状部材の外径情報を取得する取得部と、前記取得部が取得した前記外径情報に基づいて、前記画像における前記管状部材の輪郭を補正する画像処理部と、を備える。
