An image processing apparatus is provided with an image data obtaining means configured to obtain color moving image data including multiple pieces of image data capturing biological tissues, a scene determining means configured to determine a photographic scene based on the color moving image data, a score calculating means configured to calculate a score indicative of seriousness of lesion of the biological tissues captured in the image represented by the image data for each pixel, based on the image data, and a marking means configured to apply marks indicative of a distribution of the scores on the image. The marking means is configured to execute a detailed marking process to apply the marks indicating the distribution of the scores in detail, and a simple marking process to apply the marks indicating the distribution of the scores in a manner simpler than the detailed marking process. The marking means executes one of the detailed marking process and the simple marking process in accordance with the result of determination of the photographic scene.
