4. The image processing method according to claim 1 , wherein the fuzzy region extraction step comprises: a confidence map generation step for creating a confidence map for each predefined class based on the classification confidence of each region; a region segmentation step for segmenting each confidence map into foreground and background regions of each predefined class based on the confidence maps and predefined thresholds; and a fuzzy region judgment step for judging a region, which is not segmented into the foreground region of one and only one predefined class, to be a fuzzy region.
4. The image processing method according to claim 1 , wherein the fuzzy region extraction step comprises: a confidence map generation step for creating a confidence map for each predefined class based on the classification confidence of each region; a region segmentation step for segmenting each confidence map into foreground and background regions of each predefined class based on the confidence maps and predefined thresholds; and a fuzzy region judgment step for judging a region, which is not segmented into the foreground region of one and only one predefined class, to be a fuzzy region. 6. The image processing method according to claim 4 , wherein each confidence map is segmented into foreground and background regions of each predefined class based on Graph-cut method in the region segmentation step.