Image matching with equivalent sharpness enhancement
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United States of America Patent
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May 25, 1999
Grant Date -
N/A
app pub date -
Jan 21, 1997
filing date -
Jan 25, 1996
priority date (Note) -
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Abstract
Original image data are converted to device-independent image data expressed in a device-independent color space. The device-independent image data are re-converted to device-dependent image data expressed in a device-dependent color space used in an output device. Then, a specific sharpness enhancing process is carried out for the device-dependent image data, so as to generate output image data while the specific sharpness enhancing process is made equivalent to another sharpness enhancing process executed when a target output image is generated. This sharpness of the output image with a predetermined output device substantially agrees with that of the target output image. The method significantly improves the degree of matching in image reproduction between two different output images.
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