PROBLEM TO BE SOLVED: To enable a physician to make an easier and more precise diagnosis.SOLUTION: Classification means 101a classifies a captured image of an affected area to be diagnosed, in accordance with a stage of progression of a lesion, and thereby a processing unit 101 performs image conversion processing corresponding to a class it has been classified into. For example, structure clarifying conversion processing is performed upon the classification into a class of a low stage of the progression, region highlighting conversion processing is performed upon the classification into a class of a middle stage of the progression, and region fluorescent coloring conversion processing is performed upon the classification into a class of a high stage of the progression.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】医師の診断を容易にするとともに診断精度の向上をはかる。【解決手段】処理部101は、分類手段101aが、診断の対象となる患部の撮影画像を病変の進行度により分類することで、分類された分類に対応する画像変換処理を実行する。例えば、進行度が低位の分類に分類された場合、構造明瞭変換処理を実行し、進行度が中位の分類に分類された場合、部位強調変換処理を実行し、進行度が高位の分類に分類された場合、部位蛍光色変換処理を実行する。【選択図】図1