Vector method for color misregistration detection in image data
AssigneeSharp Laboratories of America, Inc.
InventorsWilliam Ho Chang, Makoto Otsu
Life of this patent
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Abstract
A method for color misregistration detection. Input image data is buffered and transferred to vector space. An examination window for a current pixel is established and foreground and background pixels within that window are selected. The current pixel is examined to determine if it is in an edge of a scanned object. If the current pixel is in an edge, it is analyzed for color misregistration. The analysis includes an application of Stokes' theorem. If the results of the application of Stokes' theorem indicate that the color misregistration is above a threshold, the pixel is identified as having color misregistration.
Claims9
A method for detecting color misregistration of input images, comprising the steps of:
- a) buffering image data received from an image capture device in the form of color space data;
- b) transferring said color space data to vector space;
- c) establishing a window around and including a current pixel;
- d) selecting foreground and background pixels in said window;
- e) determining if said current pixel is in an edge of an object;
- and
- f) analyzing said pixel by integrating across several pixels in said window to determine if the magnitude of color misregistration exceeds a threshold, if said pixel is in an edge of an object.
Dependencies are inferred from the claim text.