Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge

Figure 14

The detection results of the pointer gauge with a lot of writing on the dial.

(a) The original gauge image

(b) The dial region of the manual interception

(c) Detection results of dial center and dial region

(d) Detection results of scale region

(e) Angle histogram for scale marks detection

(f) Results of the pointer and scale marks detection