Provided is an image processing device for sorting frames included in one moving image into different channels, the frames included in the moving image being a mixture of frames belonging to the different channels. The image processing device includes an automatic sorting unit and a re-sorting unit. The automatic sorting unit calculates a similarity degree of the plurality of frames included in the moving image by performing image processing on the frames, and sorts the plurality of frames into the plurality of channels based on the similarity degree. The re-sorting unit accepts, from a user, an association operation of individually associating at least one non-sorted frame, which is not automatically sorted by the automatic sorting unit, with any of the plurality of channels, and individually sorts the non-sorted frame to any of the plurality of channels based on content of the association operation.