Image analysis – Pattern recognition – Template matching
Reexamination Certificate
2004-01-07
2008-12-09
Bali, Vikkram (Department: 2624)
Image analysis
Pattern recognition
Template matching
Reexamination Certificate
active
07463774
ABSTRACT:
An efficient technique is provided for determining a portion of a document corresponding to a captured image. Areas of a document in which the pattern is at least partially obscured are identified. A reference pixel in the image is selected, and an offset between the pixel and the pattern is determined. A pixel-by-pixel comparison is then made of the image with the document such that the reference pixel is only compared with locations in the document that are both within the identified areas and have the determined offset from the pattern. The comparison with the highest correspondence between the image pixels and the electronic document then identifies the position of the reference pixel relative to the electronic document.
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Chen Liyong
Dang Yingnong
Ma Xiaoxu
Wang Jian
Wang Qiang
Bali Vikkram
Birch & Stewart Kolasch & Birch, LLP
Microsoft Corporation
Rashid David P
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