Shape matching method and system based on mixing descriptor

A technology of mixed descriptors and matching degrees, which is applied to instruments, character and pattern recognition, computer components, etc., and can solve problems such as inaccurate matching and low efficiency

Active Publication Date: 2016-02-03
ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1
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Problems solved by technology

[0005] The technical problem to be solved in this application is to provide a shape matching method and syste...

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  • Shape matching method and system based on mixing descriptor
  • Shape matching method and system based on mixing descriptor
  • Shape matching method and system based on mixing descriptor

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Embodiment Construction

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0058] refer to figure 1 , which shows a flow chart of an embodiment of a shape matching method based on a hybrid descriptor in the present application, which may include the following steps:

[0059] Step S101: Obtain the edge of the target shape, and obtain the boundary contour points of the target shape.

[0060] There are many common methods to obtain the boundary contour points of the shape, one of which is: firstly, the Canny second-order differential operator is used to extr...

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Abstract

The invention provides a shape matching method based on a mixing descriptor, and the method comprises the steps: obtaining the edge of a target shape, and obtaining boundary contour points of the target shape; calculating the mixing descriptor of each boundary contour point; calculating the matching degree of the target shape with each template shape in a database according to the mixing descriptors of all boundary contour points in the target shape; and determining a template shape matched with the target shape according to all matching degrees. The method calculates the mixing descriptor of each boundary contour point, calculates the matching degree of the target shape with each template shape in the database according to the mixing descriptors of all boundary contour points in the target shape, can achieve the feature extraction and effective expression of an image shape, has scale invariance, rotation invariance and translation invariance, effectively inhibits the interference from noises, and improves the accuracy and efficiency of shape matching.

Description

technical field [0001] The present application relates to the field of shape matching, in particular to a shape matching method and system based on mixed descriptors. Background technique [0002] With the development of technology, people pay more and more attention to the methods of object shape matching. [0003] Existing object shape matching is generally based on contour methods, usually using global features or local features to describe the characteristics of the target object. Global features can describe the overall characteristics of the target, which is especially useful for simple target shapes and a single closed contour, but for local Changes are sensitive and prone to mismatches, such as ShapeContexts, Inner-Distance and Multi-scaleRepresentation. Local features can overcome the above problems and are robust, because even if part of the contour is occluded or deformed, other local features can be matched and recognized, such as ShapeTree, ClassSegmentSets, Co...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/46
CPCG06V10/752G06V10/44
Inventor 杨剑宇徐浩然
Owner ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV
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