| 摘要 |
PURPOSE:To prevent the generation of the useless areas by integrating a relevant area with its adjacent area in response to a decided fact that the change of the picture quality cannot be visually recognized basing on the size of the area and the color difference between the area and its adjacent area. CONSTITUTION:The color image to be processed is fetched (SP1) and plural representative colors (having higher appearing frequency in a color image) are selected (SP2). The color which is not selected as a key color is replaced with a representative color having the highest approximation (SP3). Then, a partial image area is obtained at every representative color (SP4). Then, it is discriminated whether a partial image area where the change of the picture quality cannot be visually identified is existed or not (SP5). If so, the relevant partial image area where the change of picture quality cannot be visually recognized is integrated with another partial image area (SP6). Then, the preceding discrimination is carried out again. If it is discriminated that the partial image is not existed, each partial image area is approximated with a polygon. |
