| 摘要 |
PROBLEM TO BE SOLVED: To provide a hardware implemented method for rotating an image about a user defined reference point. SOLUTION: In this method, the user defined reference point is received and the user defined reference point is capable of being defined outside the image. Subsequently, a position of the image is calculated whereby the position defines a location of the image after rotation about the user defined reference point. An order to fetch one or more image pixels from a memory is then calculated. The order defines a rotation angle of the image after rotation about the user defined reference point. Thereafter, the image pixels are fetched from the memory according to the calculated order. An apparatus and a display controller for rotating the image about the user defined reference point also are described. COPYRIGHT: (C)2006,JPO&NCIPI
|
