Method and apparatus for enhancing object boundary precision...

Details Method and apparatus for enhancing object boundary precision... Method and apparatus for enhancing object boundary precision...

2006-09-25

2010-10-12

Couso, Yon (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S167000

Reexamination Certificate

active

07813582

ABSTRACT:
One embodiment of the present invention provides a system that enhances sharpness of object boundaries in an image. During operation, the system first receives an image. Next, the system computes gradients of color values for pixels in the image. The system then computes displacement vectors for pixels in the image, wherein the magnitude of the displacement vector for a given pixel is proportional to the magnitude of the gradient of the color value at the given pixel. The system next replaces the color values for the pixels, wherein the color value for a given pixel is replaced with a color value obtained from a location at the end of the displacement vector for the given pixel.

REFERENCES:
patent: 6600517 (2003-07-01), He et al.
patent: 6611627 (2003-08-01), LaRossa et al.
patent: 2004/0207881 (2004-10-01), Nomura
patent: 2006/0192897 (2006-08-01), Morphet
patent: 2008/0199101 (2008-08-01), Sumiya et al.

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