| http://www.w3.org/ns/prov#value | - the image change detection step in the first embodiment; [0025]FIG. 7 is a flow chart showing the processing in the image change detection step in the second embodiment; [0026]FIG. 8 is a flow chart showing the processing in the image change detection step in the third embodiment; [0027]FIGS. 9A and 9B are views for explaining an example of how an image is divided into blocks, a pixel processing
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