God bead identity identification method and device based on image pyramid gradient histogram features

Abstract

The invention discloses a God bead identity identification method and device based on image pyramid gradient histogram features. The method includes: adopting a portable image acquisition device with a network function to acquire a God bead image; extracting pyramid gradient histogram features of a rectangular region of the celestial bead image; based on the God bead template library established by the pyramid gradient histogram features of the God bead image, calculating the Chamfer distance between the pyramid gradient histogram features of the rectangular area of the extracted God bead image and the real God bead features collected and stored by the template library, and carrying out God bead identity authentication. A God bead identification challenge of shooting at different resolutions and any angle under different illumination environments is overcome; under the condition that the local features of the God bead image are lost, a robustness result can still be obtained, universality and robustness are achieved, the God beads can be automatically, efficiently, objectively and accurately recognized, and a simple, convenient, accurate and intelligent God bead identity recognition platform is provided for celestial bead fans and collection.

Description

technical field [0001] The invention relates to the field of image matching, in particular to a method and device for identifying the identity of a dzi bead based on the gradient histogram feature of an image pyramid. Background technique [0002] Tianzhu has a unique totem pattern, which has been passed down from origin and is the carrier of culture. The material of Tianzhu is generally jadeite, and jadeite is more common. The shape is generally a cylinder or a quasi-cylindrical with both ends slightly thinner than the middle, as well as a sphere or ellipsoid. Dzi beads generally have special textures. typical dzi beads figure 1 , 2 , 3, where, figure 1 It is a short cylindrical dzi, figure 2 It is an ellipsoid dzi, image 3 It is a long cylindrical dzi. Dzi beads can be made from natural materials or artificially synthesized. Identifying the identity of Tianzhu is of great significance for historical research and regulating the collection market, and the pattern o...

AI Technical Summary

Problems solved by technology

However, the resolutions of different types of mobile phones, that is, different types of image acquisition devices, are very different, and the imaging details also show huge differences, which makes it very difficult to complete image matching; and because most of the beads are not A regular cylinder or sphere, but an irregular body with a special curved surface, the different images obtained from different shooting angles are very different, and in the actual matching, it is necessary to match the Tianzhu images taken at any angle, which further increases the image matching. difficulty

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