Precise registration method of damaged part based on improved ICP (Inductively Coupled Plasma) algorithm

A technology for precise registration and parts, applied in computing, image analysis, image enhancement, etc., can solve problems such as low efficiency, inability to guarantee point cloud quality, and affecting the accuracy of fitting features

Inactive Publication Date: 2015-05-13
CHONGQING UNIV
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Problems solved by technology

[0005] However, in the first method, the point cloud used to fit the basic features is manually intercepted, which may contain the point cloud of the worn area, which affects the accuracy of the fitted feature, and this method is only applicable to the point cloud model where there are complete or A relatively ...

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  • Precise registration method of damaged part based on improved ICP (Inductively Coupled Plasma) algorithm
  • Precise registration method of damaged part based on improved ICP (Inductively Coupled Plasma) algorithm
  • Precise registration method of damaged part based on improved ICP (Inductively Coupled Plasma) algorithm

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Embodiment Construction

[0040] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 2 As shown in , an accurate registration method of damaged parts based on the improved ICP algorithm is carried out according to the following steps:

[0042] First enter step 1: get the original model point set Q 0 and damage model point set P 0 , denoted as Q 0 ={q j0 |j=1,2,...,m} and P 0 ={p i0 |,i=1,2,…,n}, using the three-point alignment method, the original model point set Q 0 As a reference, for the damage model point set P 0 Perform pre-registration to obtain the damage model point set P after the k=1th iteration k ,in, is the original model point set Q 0 The three-dimensional coordinate position of the jth point in , is the damage model point set P 0 The three-dimensional coordinate position of the i-th point in , is the damage model point set P afte...

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Abstract

The invention discloses a precise registration method of a damaged part based on an improved ICP (Inductively Coupled Plasma) algorithm. The method comprises the steps of carrying out advanced registration to generally adjust two models to correct position by adopting a three-point aligning method; precisely registering by adopting an improved ICP algorithm; combining a corresponding point curvature constraint and a corresponding point distance constraint in the process of precisely registering, and realizing the automatic elimination on damage point cloud by setting the curvature constraint and a distance threshold value, so as to obtain corresponding points of a non-damaged area, realize the precise registering of the non-damage area to obtain the morphology of a damaged area quickly and accurately. The method has the significant effects of taking full account of the change of the surface size and morphology of a damaged part in the process of registering precisely, and ensuring the accuracy of the corresponding point of the registering point cloud by combining the corresponding point curvature constraint and the corresponding point distance constraint.

Description

technical field [0001] The invention relates to the technical field of reverse engineering, in particular to a method for accurate registration of damaged components based on an improved ICP algorithm. Background technique [0002] In the remanufacturing process of reverse engineering assisted parts, sometimes it is necessary to know the damage amount or damage shape of the parts. When it is difficult to measure or the measurement accuracy is not enough by using the traditional dimension measurement method, the usual method is to take the damaged parts. The data model after damage is obtained by 3D scanning, and it is aligned with the standard model for analysis, so that the damage amount and shape of the parts can be obtained quickly and accurately. The registration accuracy of the post-injury data model and the original model directly affects the measurement accuracy of the damage volume. [0003] In practical applications, due to the damage on the surface of the failed p...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0004G06T2207/30108
Inventor 李聪波肖卫洪顾小进赵来杰李玲玲马辉杰
Owner CHONGQING UNIV
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