Characteristic analytical method for product point clouds surface based on dynamic access model

A technology of data dynamics and analysis methods, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as poor adaptability, low accuracy of sampling results, and low precision of 4D Shepard surface models, so as to improve stability , improve accuracy, and improve the effect of adaptability
CN101017476AInactive Publication Date: 2007-08-15SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF TECH
Publication Date
2007-08-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention provides one product cloud shape property analysis method based on data dynamic memory module, which comprises the following steps: reading the output data from digital device into memory and establishing linear memory structure for data; then adopting 3D R*-tree for rapid space polymer sorting on data and to establish data dynamic memory; then in the browsing process, using current data point as aim point to get the local reference data set by use of Bezier curve accuracy near to point set to estimate curve rate ; finally mapping the data curve rate as RGB color mode.
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Description

Technical field

[0001] The invention provides a product point cloud surface feature analysis method based on a data dynamic access model, which belongs to the technical field of product reverse engineering. Background technique

[0002] In reverse engineering, point cloud surface feature analysis can estimate the surface feature parameters of all measurement points based on product local surface data to realize the overall evaluation of point cloud surface features, which is the process of data preprocessing and surface model reconstruction. It is one of the key technologies, and there are three main implementation methods: triangular patch method vector estimation method, local data point set paraboloid approximation estimation method and sampling point 4D Shepard interpolation calculation method.

[0003] The triangular surface method vector estimation method uses the triangular surface model to interpolate or approximate the point cloud, and evaluates the overall surface ...

Claims

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