| 摘要 |
PURPOSE:To show the image data as designated by the color information on the original image data and also to ensure the effective use of a storage area by checking the number of component colors of the image data, deciding the entry number of a pallet part, and also setting the pallet index value of a data part at the least bit width. CONSTITUTION:The image data 10 are shown in the fixed bit width, and a color information checking part 1 checks the number of colors of an image. A pallet data calculating part 2 sets the pallet entry number of a pallet part 5 at the value equal to the number of colors checked by the part 1. The part 2 also sets the pallet index value of a data part 6 at the least bit width with which the pallet index of the part 5 can be identified. An area securing part 3 secures the areas of both parts 5 and 6 which are calculated by the part 2. In such a constitution, an original image is perfectly regenerated and the storing area can be reduced for the image data having a small number of emerging colors. |
