发明名称 |
METHOD FOR EMPHASIZING DIFFERENCES IN GRAPHICAL APPEARANCE BETWEEN AN ORIGINAL DOCUMENT AND A MODIFIED DOCUMENT WITH ANNOTATIONS |
摘要 |
A method for emphasizing differences in graphical appearances between an original document and a modified document is provided in accordance with an aspect of the present invention. The method includes the step of receiving a first bitmap of the modified document, and a second bitmap of the original document. The method includes deriving a set of difference points based upon a comparison of the first bitmap and the second bitmap. The method includes a step of superposing a spatial index onto the set of difference points, and generating polygon vertices from a plurality of adjacent elements of index. Each of the elements has a predetermined density of difference points. The method concludes with generating an annotation from the polygon vertices. |
申请公布号 |
CA2676487(C) |
申请公布日期 |
2015.12.01 |
申请号 |
CA20082676487 |
申请日期 |
2008.01.17 |
申请人 |
BLUEBEAM SOFTWARE, INC. |
发明人 |
HARTMANN, BRIAN;GUNDERSON, BENJAMIN |
分类号 |
G06F17/00;G06T1/00 |
主分类号 |
G06F17/00 |
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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