Method for automatically finding bone nails and measuring external dimension of bone nails based on inherent characteristics of medical implantable bone nails
A technology with inherent characteristics and external dimensions, which is applied in the field of automatically finding and measuring the external dimensions of medical implantable bone nails based on the inherent characteristics. Large and other problems, to achieve the effect of high measurement efficiency
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[0051] A technical solution is based on the inherent characteristics of medical implantable bone screws to automatically find and measure their external dimensions, which includes the following steps:
[0052] Step 1: Acquire an image. Batches and random placement of bone nails on the large-field image measuring instrument (attached figure 2 : Refers to the workbench consisting of a large field of view bi-telecentric lens 1-2, a high-resolution camera 1-1, a parallel light source 1-5, a workbench 1-4 and a fixing mechanism 1-3), and the computer collects images ( attached image 3 ).
[0053] Step 2: Use the inherent characteristics of the bone screw to automatically find the bone screw, and process the image binary.
[0054] Step 2.1: Carry out threshold segmentation, all pixels whose gray value is greater than the threshold may be the bone nail to be tested are represented by 0, and all pixels whose gray value is less than or equal to the threshold are blank areas and ar...
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