Image analysis – Image segmentation – Distinguishing text from other regions
Reexamination Certificate
2006-07-18
2006-07-18
Mehta, Bhavesh M. (Department: 2625)
Image analysis
Image segmentation
Distinguishing text from other regions
C382S177000, C358S462000
Reexamination Certificate
active
07079686
ABSTRACT:
A system can include a system processor that is programmed or adapted to classify pixels in a document image, and in some instances, to enhance the document image based upon such classification. Image data including pixels is received. For each pixel in some subset of the image data, a feature vector is generated. Each pixel in the subset is classified as text or image based upon its associated feature vector. The classifications can be outputted for storage and/or further processing. Further processing can include pixel level enhancement processing. Such enhancement processing can include application of a sharpening filter to pixels classified as text and of a smoothing filter to pixels classified as image. In some instances, background suppression can be performed upon a subset of the image data prior to classification.
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Ahmed Mohamed N.
Cooper Brian E.
Lhamon Michael E.
Garcia Catherine K.
Lexmark International Inc.
Mehta Bhavesh M.
Seth Manav
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