| 摘要 |
PROBLEM TO BE SOLVED: To prevent a deterioration in the image quality of an output image due to an error of a sampling position without depending on correction of the sampling position.SOLUTION: An image processing circuit includes: pixel interval storage means for storing an interval obtained by an inverse number of a magnification in magnification processing to an input image in a fixed-point format of the accuracy satisfying a determined condition; addition means for adding the interval stored in the image interval storage means to the current value showing a pixel position in the input image, and acquiring the pixel position of the input image to an object pixel; sampling position calculation means for performing fraction processing of an output value of the addition means to calculate a sampling position; filer operation means for performing an operation using a coefficient specified by a decimal part of the sampling position of a gradation value of a pixel existing at a position specified by an integral part of the sampling position in the input image; and image data output means for outputting data of an output image including the gradation value acquired by the filter operation means.SELECTED DRAWING: Figure 3 |
