Patent ID: 8509562
Filing Date: 2013-08-13
Classification: G06T

Abstract:
1. A computer-implemented method comprising: computing a first image perimeter color difference value for a first pixel at a pixel location included in a first image that is captured using a first focal length, resulting in a first image perimeter color difference value; computing a second image perimeter color difference value for a second pixel at the pixel location included in a second image that is captured using a second focal length that is different than the first focal length, resulting in a second image perimeter color difference value; computing a third image perimeter color difference value for a third pixel at the pixel location included in a third image that is captured using a third focal length that is different than the first focal length and the second focal length, resulting in a third image perimeter color difference value; identifying a number of local maximum color difference values at the pixel location using the first image perimeter color difference value, the second image perimeter color difference value, and the third image perimeter color difference value; in response to identifying only one local maximum color difference value: in response to identifying two local maximum color difference values: