Patent ID: 8594365

Claim:
A method of reading a gauge, comprising: identifying a region of interest (ROI) including a plurality of pixels, wherein the ROI overlaps at least a portion of a gauge feature, and wherein the ROI includes a subset of the plurality of pixels; capturing a digital image of the gauge using a gauge reading device attached to the gauge, the digital image comprising the plurality of pixels; determining an angle of the gauge feature based on the plurality of pixels in the ROI, wherein the angle is calculated with respect to an anchor point; converting the angle into a gauge reading, and the gauge feature comprises a needle; and determining the angle further includes determining an initial angle of the needle from the image pixel locations; if the initial angle is outside predetermined limits, rotating all the pixel locations in a first direction about the anchor point by a displacement angle, determining a rotated angle of the needle from the rotated image pixel locations, and modifying the rotated angle by the displacement angle to generate the angle of the gauge feature.