Patent ID: 8606011
Filing Date: 2013-12-10
Classification: G06K,H04W

Abstract:
1. A computer-implemented method comprising: under control of one or more computer systems configured with executable instructions, obtaining an image captured by a camera of a portable computing device, the image including pixel values for a plurality of pixels of the camera; identifying one or more potential edge locations within a region of the image by analyzing one or more image intensity gradients within the region; analyzing pixel values of a set of pixels on opposing sides of the one or more potential edge locations to determine a character pixel value and a background pixel value for the region; based at least in part on the character pixel value and the background pixel value for the region, determining a character pixel value threshold for the region; and determining one or more character portions within the region based at least in part upon whether pixel values for pixels in the region are above or below the character pixel value threshold.