CPC F04D 27/001 (2013.01) [F04D 19/002 (2013.01); G06F 30/28 (2020.01); F05B 2210/40 (2013.01); F05B 2260/84 (2013.01); G06F 2111/10 (2020.01); G06F 2113/08 (2020.01); G06F 2119/08 (2020.01)] | 20 Claims |
1. A computer-implemented method, for using image processing for determining a fan rotational direction, comprises:
receiving, by a computer processing system, digital data of a three dimensional representation of an axial fan having plural fan blades;
determining, by the computer processing system, a viewing angle of the three dimensional representation of the axial fan relative to a reference vector;
orienting, by the computer processing system, a virtual viewing position of the three dimensional representation of the axial fan to align with the determined viewing angle;
generating, by the computer processing system, a digital image of at least a single blade of the plural fan blades of the axial fan as viewed from the virtual viewing position, the digital image representing a two dimensional projection of the three dimensional representation of the axial fan;
processing, by the computer processing system, the digital image to extract data representing a profile of the single blade;
identifying, by the computer processing system, a first edge and a second edge based on the profile of the single blade represented by the extracted data; and
determining, by the computer processing system based on the first and second edges represented by the extracted data, the fan rotational direction.
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