Method for positioning DPM two-dimension code area
A regional positioning and two-dimensional code technology, which is applied to record carriers, instruments, and computer parts used in machines. It can solve the problems of low contrast, high price, and vague reading rate indicators. The effect of fast and accurate positioning and reduction of production costs
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0037] In order to improve the accuracy of locating DPM two-dimensional codes and reduce the production cost of DPM two-dimensional code products, the embodiment of the present invention provides a method for locating DPM two-dimensional code areas. The present invention proposes an improved SUSAN corner point detection [2] (Smith et al. proposed the (SmallUnivalueSegmentAssimilatingNucleus, SUSAN) based on brightness contrast relationship in 1997) and semi-supervised neighbor propagation clustering algorithm [3] (A new clustering algorithm proposed by FreyBJ and DueckD in 2007, which starts from considering each point as the initial cluster center without defining the number of classes in advance. The algorithm passes the attraction fu...
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