An image processing apparatus comprising: an extraction unit configured to extract at least one region of interest with respect to each frame image of a series of frame images of an object; a calculation unit configured to calculate a feature amount of the region of interest; and a display control unit configured to cause a display unit to display the feature amount as a time series graph, wherein when at least some of the series of frame images are to be played back as a moving image, the display control unit causes an index which represents a position corresponding to the displayed frame image to be displayed on the graph.
IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM