<P>PROBLEM TO BE SOLVED: To provide a new image segmenting algorithm for object-based image retrieval. <P>SOLUTION: A color region is extracted from a multidimensional image, and the complexity of boundaries of all pairs of color regions is calculated. When a value of the boundary complexity of the pair of color regions is more than a specific threshold value of the boundary complexity, and a color distance of the pair of regions is smaller than a specific distance threshold value, the pair of regions are annexed. Whether the color region is small, and surrounded by another color region is determined, the small color region is annexed to the surrounding color region when the decision is true. Finally, the region data is assigned to each color region. <P>COPYRIGHT: (C)2007,JPO&INPIT 
METHOD AND DEVICE OF SEGMENTING MULTIDIMENSIONAL IMAGE