| 摘要 |
<p>When encoding a set of texture data elements (30) to be used in a graphic processing system, a direction in which data values of the set of texture data elements indicate the largest variance in a color space is estimated by dividing the texture data elements at a data space by using one or more infinite planes (41). At each plane, a texture data element value of each side of the plane is added up to each of sum points 48, 49 and vector 50 between the determined two sum points. After that, a direction at one data space among the determined vector 50 is used to obtain endpoint color values to be used when encoding the set of texture data elements. [Reference numerals] (48) Positive sum; (49) Negative sum</p> |
