PROBLEM TO BE SOLVED: To provide an image processing apparatus, etc. capable or extracting, from an intraluminal image, a region from which a through-blood vessel image has been locally disappeared.SOLUTION: An image processing apparatus 1 comprises: a blood vessel sharpness calculation unit 110 for calculating blood vessel sharpness indicating the sharpness of a through-blood vessel image in a mucous membrane region, or a region in which an intraluminal mucous membrane is captured in an intraluminal image an abnormality candidate region extraction unit 120 for extracting a sharpness-lowered region, or a region in which the blood vessel sharpness is lowered, as an abnormality candidate region, or a region from which a through-blood vessel image has disappeared locally and an abnormality region determination unit 130 for determining whether or not the candidate region is an abnormality region, on the basis of the shape of the candidate region.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】管腔内画像において血管透見像が局所的に消失した領域を抽出することができる画像処理装置等を提供する。【解決手段】画像処理装置1は、管腔内画像のうち、管腔内の粘膜が写った領域である粘膜領域における血管透見像の鮮鋭度を示す血管鮮鋭度を算出する血管鮮鋭度算出部110と、血管鮮鋭度が低下した領域である鮮鋭度低下領域を、血管透見像が局所的に消失した領域である異常領域の候補領域として抽出する異常候補領域抽出部120と、候補領域の形状をもとに、該候補領域が異常領域であるか否かを判定する異常領域判定部130とを備える。【選択図】図1
