| 摘要 |
PROBLEM TO BE SOLVED: To provide an image processing device and a method for it capable of overlapping the optional number of layers and reducing a frequency of scanning of all the scene data for lowering a load of a scene data processing device when a semi-transparent object is synthesized. SOLUTION: This image processing device is provided with sort circuits SRT0-SRT3 connected in series. Each of them compares a read depth data value from a matching buffer with a first supply depth data value fed from a write unit WU. When the first supply depth data is larger than the read depth data, the first supply depth data and RGBαdata are fed to the sort circuit in the following step, and the read depth data and the RGBαdata are rewritten in the matching buffer. When the first supply depth data is smaller than the read depth data, the read depth data and the RGBαdata are fed to the sort circuit in the following step, and second supply data from the previous step and the RGBαdata are written in the matching buffer. COPYRIGHT: (C)2004,JPO |
