发明名称 |
A method for performing perspective projection conversion |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP0774855(A2) |
申请公布日期 |
1997.05.21 |
申请号 |
EP19960308219 |
申请日期 |
1996.11.14 |
申请人 |
XEROX CORPORATION |
发明人 |
YEH, THOMAS I.;TSE, FRANCIS K.;LAHUE, GEORGE W. |
分类号 |
H04N1/387;G06T3/40;H04N1/40;H04N1/405;(IPC1-7):H04N1/40 |
主分类号 |
H04N1/387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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