Patent ID: 7587086
Filing Date: 2009-09-08
Classification: G06T

Abstract:
1. A method, comprising: for each pixel reference point in a digital image that includes a plurality of pixels, setting one or more pixel state flags to indicate which of one or more pixels in a pixel field adjacent to the pixel reference point is selected, there being a set of pixel state flags associated with each pixel reference point, wherein when four pixels are in the pixel field adjacent to the pixel reference point, the pixel state flags associated with the pixel reference point include an upper right flag indicating whether a pixel above and right of the pixel reference point is selected, a lower right flag indicating whether a pixel below and right of the pixel reference point is selected, an upper left flag indicating whether a pixel above and left of the pixel reference point is selected and a lower left flag indicating whether a pixel below and left of the pixel reference point is selected, the setting of the one or more pixel state flags being controlled by a processor; traversing the pixel state flags to determine a location for a selected pixel identifier that encompasses one or more sets of selected pixels; wherein setting the one or more pixel state flags includes rendering the selected pixel identifier on a display device.