Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1995-11-15
1998-04-21
Boudreau, Leo
Image analysis
Image transformation or preprocessing
Changing the image coordinates
382298, 358445, 358447, 358451, 358455, 358486, G06K 932
Patent
active
057427089
ABSTRACT:
A system and process prints a high resolution image on a high addressable image output terminal by converting an image at one resolution to an image having a lower resolution in a fast-scan direction and a higher resolution in a pixel depth direction. The converted image is then processed and binarized prior to being printed on a high addressable printer. The system or process utilizes a conversion circuit which includes a two-bit per pixel packing circuit, a scanline buffer circuit, a logic circuit, and a look-up table. The conversion circuit initially converts the image into an image having a lower resolution in the fast-scan direction and a higher pixel depth resolution. Thereafter, the image is further converted to an image having a lower resolution in the slow-scan direction and a higher pixel depth resolution. This conversion of a high resolution image to a lower resolution is carried without any substantial lost to the image content data.
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Lahue George W.
Tse Francis K.
Yeh Thomas I.
Boudreau Leo
Mariam Daniel G.
Nickerson Michael J.
Xerox Corporation
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