A New Meter Dial Indicator Detection Method Based on Center-point Projection
一种仪表指针位置检测的中心投影法*

The Hough transform is firstly used to detect the center point of the dial. The dail image is then projected to the center point and the dial indicator is finally detected from the image center-point-based projection. Experiments show that the proposed method works very well for the dial indicator detection. Comparing with the classical Hough transform, it has the merit of fast processing speed and very low computation storage.