Patent ID: 7151844
Filing Date: 2006-12-19
Classification: G06K,H01L

Abstract:
1. A method for detecting edges in an image using an image sensor that comprises a two-dimensional array of addressable pixels, with each of said pixels providing a data value indicative of a portion of the image sensed by that pixel, the method comprising the steps of: (a) sensing the image using the image sensor; and (b) carrying out the following steps for each of a number of selected pixels using a two-dimensional localized group of pixels surrounding each selected pixel, wherein each of the localized groups of pixels comprises a plurality of one-dimensional sets of pixels, each one-dimensional set being orthogonally offset from the other one-dimensional sets in the group: wherein step (b) further comprises processing the selected pixels sequentially such that, for each selected pixel, steps (b1) through (b5) are carried out for that selected pixel prior to carrying out any of the steps (b1) through (b5) for the next selected pixel.