Robust pointer instrument reading automatic identification method
An instrument reading and automatic identification technology, applied in the direction of character and pattern recognition, instruments, computer components, etc., can solve the problems of instrument scale recognition errors, instrument edge occlusion, and lack of accurate positioning of the center of the dial, etc., to avoid errors, The effect of improving precision and improving automatic control efficiency
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[0049] The present invention will be further described in detail below in conjunction with the drawings and specific implementations:
[0050] Combine figure 1 As shown, a robust automatic recognition method for pointer meter readings includes the following steps:
[0051] s1, get dashboard image
[0052] Since there may be multiple dashboards in the same photo taken, the dashboard positioning is required.
[0053] The method of the present invention adopts the hough transform method to realize the positioning of the instrument panel, and can accurately determine the instrument panel in the case of a normal resolution (1280*768).
[0054] s2. Extract the eigen image corresponding to the dashboard image, and eliminate the shadow in the eigen image extraction process
[0055] Under normal light conditions, the edge of the instrument panel will always form a shadow in a certain direction of the instrument panel. The shadow overlaps the scale line and even part of the pointer, which affects ...
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