Image analysis – Image transformation or preprocessing – Changing the image coordinates
Reexamination Certificate
2005-07-12
2005-07-12
Miriam, Daniel (Department: 2621)
Image analysis
Image transformation or preprocessing
Changing the image coordinates
C382S295000
Reexamination Certificate
active
06917721
ABSTRACT:
A method and apparatus for processing an image are disclosed. For edge detection, the zero crossing pixel location, n0, within the image is identified. Then, a sub-pixel position offset, a, is determined. The offset is a relationship between interpolated image and an interpolated kernel at the zero crossing pixel location. Finally, the interpolated position for the edge location, t0, is determined from the pixel location, n0, and the sub-pixel position offset, a. For matching the detected edges of an object to edges of a model object, translation [v1, v2] between a detected edge of an object in the image and the corresponding edge of a model object is first determined. Next, cross correlation between the detected edge and the corresponding model edge is calculated. Then, translation error [e1, e2] is determined. Finally, the translation is updated.
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Elad Michael
Shaked Doron
Miriam Daniel
Rosario-Vasquez Dennis
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