Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2005-06-20
2008-12-16
Bella, Matthew C (Department: 2624)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C382S256000, C382S257000
Reexamination Certificate
active
07466872
ABSTRACT:
An object based boundary refinement method for object segmentation in digital images receives an image and a single initial object region of interest and performs refinement zone definition using the initial object regions of interest to generate refinement zones output. A directional edge enhancement is performed using the input image and the refinement zones to generate directional enhanced region of interest output. A radial detection is performed using the input image the refinement zones and the directional enhanced region of interest to generate radial detection mask output. In addition, a final shaping is performed using the radial detection mask having single object region output.A directional edge enhancement method determining pixel specific edge contrast enhancement direction according to the object structure direction near the pixel consists receives an image and refinement zones and performs 1D horizontal distance transform and 1D vertical distance transform using the refinement zones to generate horizontal distance map and vertical distance map outputs. A neighboring direction determination is performed using the horizontal distance map and the vertical distance map to generate neighboring image output. In addition, a directional edge contrast calculation using the neighboring image and input image having directional enhanced region of interest output.
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Lee Shih-Jong J.
Oh Seho
Bella Matthew C
DRVision Technologies LLC
Newman Michael A
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