| 摘要 |
PURPOSE:To promptly enlarge and reduce picture data by referring to the value of each rotation shift register with successively shifting the register, controlling the input/output of the data and plural concentration calculating parts, and simultaneously executing a concentration operation for the row or the column of the continuously converted picture. CONSTITUTION:A concentration calculating part 116 calculates the value of a converted picture element from the respective latest two bits overflowing an the result of shifting input shift registers 112 and 113, where the original picture data are stored, and the horizontal and vertical components of intra-lattice coordinates, which are stored at the highest-order of rotation shift registers 118 and 119. Simultaneously, a concentration calculating part 117 calculates the value of the converted picture element from the respective latest two bits overflowing as the result of shifting input shift registers 114 and 115, and the horizontal and vertical components of the intra-lattice coordinates, which are stored at the highest-order of the rotation shift register 118 and at the second highest-order of the rotation shift register 119. Thus, by simultaneously processing the continuous rows or the columns, even when the original picture is small, since the plural concentration calculating part can be effectively applied, the processing time can be made shorter. |
