| 摘要 |
Playback time (display time) of an image represented by an image file contained in a folder is measured image by image, and folder icons (representative images) are generated using the images having the longest playback times. Since folder icons are created using images that the user considers important, merely observing a folder icon makes it possible for the user to grasp the content of images of a plurality of frames represented by the image files contained in the folder identified by this folder icon.
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