| 摘要 |
PROBLEM TO BE SOLVED: To provide an image processor which can correct the tilt of a partial image data. SOLUTION: An image processing part corrects the rotation of the image data and consists of an RGB filter part 22 which performs the smoothing or sharpening processing, a color correction part 23 which converts the RGB data into the CMY data, a VCR part 24 which performs the addition/deletion of colors at a CMY common part and generates the Bk data, a memory part 26 which serves as a correction work area, a CMBYkγcorrection part 28 which changes aγcurve, etc. In such a constitution, the part 26 extracts the contour of the read image data within a designated coordinate to trace the contour, calculates the coordinate serving as a reference line from the coordinate point after tracing of the contour, and calculates the tilt (angle) from the calculated coordinate. The contour extraction result is stored in a memory. Thus it is possible to detect the tilt based on the image data included in a designated area and also to correct the detected tilt.
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