发明名称 |
Resolution conversion for anti-aliased images using loose gray scale template matching |
摘要 |
A method for resolution conversion for re-sampling anti-aliased images is disclosed which decreases bandwidth costs associated with anti-aliased line art and other costs associated with interpolating these images to a desired resolution. The present method first involving the receipt of an image which is comprised of bitmap data including at least a plurality of gray-scale pixel tiles that define the image. Then receiving the image data at a first resolution and extracting pixel tile information of the received image at a second resolution. The method has the step of next using loose gray scale template matching on each of the pixel tile information with at least one of a plurality of templates so as to generate pixel-wise looseness interval values there between. Then, outputting a portion of the enhanced pixel tile information wherein the enhanced pixel tile information is formed by a matching of a template with pixel-wise looseness values. Preferably, the input and output resolutions are at different integer values and the first and second resolutions have a non-integer ratio. The input image can also preferably be comprised of gray halftones and the output enhanced pixel tile can be formed of binary pixel data.
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申请公布号 |
US2002076120(A1) |
申请公布日期 |
2002.06.20 |
申请号 |
US20000740607 |
申请日期 |
2000.12.19 |
申请人 |
XEROX CORPORATION |
发明人 |
LOCE ROBERT P.;HANDLEY JOHN C.;CUCIUREAN-ZAPAN CLARA |
分类号 |
G06T3/40;(IPC1-7):G06T3/40;G06K9/68 |
主分类号 |
G06T3/40 |
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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