Method for transforming an image from a resolution to a lower resolution
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United States of America Patent
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Nov 19, 2002
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N/A
app pub date -
Dec 7, 1999
filing date -
Dec 7, 1999
priority date (Note) -
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Abstract
A method for transforming a source image into a target image with the original resolution N time to the target resolution is disclosed. The original image data of pixels is read and stored for N scan lines and grouped into a series of matrices each including N.sup.2 pixels. The matrices are then classified into various matrix types defined previously, wherein matrices with different numbers of original dots are classified as different matrix types. The target image is formed with a plurality of target units each determined based on one corresponding matrix. In general, a target unit is drawn with target dots having a larger total area when its corresponding matrix includes a larger number of the original dots.
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