Blank hub drilling center accurate positioning method based on machine vision
A technology of machine vision and precise positioning, which is applied in the directions of instrumentation, image data processing, calculation, etc., and can solve problems such as the difficulty of accurate positioning of the hub drilling center and the difficulty of visual image segmentation
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[0040] Below in conjunction with embodiment the present invention is described in further detail.
[0041] This preferred embodiment is a machine vision-based precise positioning method for the center of a blank wheel hub, including the following steps:
[0042] 1) The visual image is obtained through the improved superpixel segmentation to obtain the hub segmentation image, and the matrix process is as follows:
[0043] 11) Uniformly initialize K initial cluster centers C on the visual image k (k=1,2,...K) on grid nodes whose interval is S; where, N is the total number of image pixels.
[0044] 12) Select the pixel point with the smallest gradient value in the 5×5 neighborhood of the cluster center as the new cluster center According to the normalized distance measure in the cluster centers Allocate pixels, form and cluster centers The corresponding clustered image block G j , and assign all pixels to the cluster center label with the closest normalized distance; am...
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