PROBLEM TO BE SOLVED: To provide a diagnostic system capable of facilitating diagnosis by a doctor, by displaying a diagnostic object portion in the emphasized state by using a photographed image of an affected part.SOLUTION: A diagnostic system 100 for diagnosing a lesion by using a photographed image of an affected part includes an image storage part 102 for storing the photographed image, and a processing part 101 for processing the photographed image stored in the image storage part 102. The processing part 101 includes separation means 101a for separating the photographed image into a luminance component and a color information component, and extraction means 101b for extracting a diagnostic object portion by the luminance component or the color information component of the photographed image in order to emphasize a characteristic of the portion.SELECTED DRAWING: Figure 1
