Method and system for identifying objects in an image

Details Method and system for identifying objects in an image Method and system for identifying objects in an image

2005-06-27

2010-10-19

Bali, Vikkram (Department: 2624)

Image analysis

Pattern recognition

Feature extraction

C382S181000, C382S275000, C382S284000, C382S197000

Reexamination Certificate

active

07817859

ABSTRACT:
Methods and apparatus for identifying objects in an image include processing the image with a gradient operator to produce a gradient magnitude and direction for each pixel. A number of different gradient directions in a portion of the processed image is determined. The portion of the processed image is identified as an object if the number of different gradient directions exceeds a threshold number of gradient directions. The determination of the gradient directions can be simplified by employing a lookup table.

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