| 摘要 |
PROBLEM TO BE SOLVED: To provide a coordinate transformation device which executes a transformation processing at high speed and executes the transformation processing at high speed even if the capacity of a storage part incorporated in DSP is small. SOLUTION: A means taking in a transformation table where one display screen is divided into plural divisions and a coordinate point on a polar coordinate, which corresponds to respective coordinate points on an orthogonal coordinate in one division selected among the plural divisions, is shown and input data on the respective coordinate points on the polar coordinate, which are displayed on the transformation table, into DSP 60 from a storage part out of DSP 60, an interpolation operation means obtaining data on the respective coordinate points in the orthogonal coordinate of the selected division by using the conversion table from input data of the polar coordinate in DSP 60, a means outputting data on the whole coordinate points on the orthogonal coordinate of the division, which is obtained by the interpolation operation means, to the storage part out of DSP 60 are executed on all divisions obtained by repetitive division. The picture values of all the coordinate points on the orthogonal coordinate of one display screen are stored in the storage part. |
