Patent ID: 6549658
Filing Date: 2003-04-15
Classification: G06K,H04N

Abstract:
A method for detecting peaks in a video stream of image data having multiple scanlines with each scanline having multiple pixels in which pixels within the video stream of image data are identified by indices (i,j) wherein i identifies the scanline within the video stream of image data and j identifies a pixel position within the scanline, comprising the steps of:(a) determining if a pixel value v(i,j) from the video stream is greater than all adjacent pixel values corresponding to v(i+1,j+1), v(iâˆ’1,j), v(i,jâˆ’1), and v(i+1,jâˆ’1); (b) determining if the pixel value v(i,j) from the video stream is greater than or equal to all adjacent pixel values corresponding to v(iâˆ’1,j+1), v(i,j+1), v(i+1,j), and v(iâˆ’1,jâˆ’1); and (c) classifying the pixel value v(i,j) as a peak value when said steps (a) and (b) make positive determinations whereby the classification identifies peaks that are more than 1 pixel in width.