A Method for Detecting the Spatial Position of Corner Spherical Center in Non-Continuous Regions
A technology of spatial position and detection method, applied in measurement devices, optical devices, image analysis, etc., can solve the problems of easily damaged product surface, low efficiency, etc., to reduce the interference of human factors, high measurement accuracy, and high robustness sexual effect
Active Publication Date: 2022-07-22
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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Incomplete and small-area measurement is a difficult point in the field of measurement. It uses locally available information to describe global parameters. Traditionally, contact three-coordinate measurement methods are used, which has low efficiency and is easy to damage the surface of the product.
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[0057] A method for detecting the spatial position of the spherical center of a non-continuous area, such as Figure 4 shown, including the following steps:
[0058] (1) Obtain the point cloud of the angular spherical target area;
[0059] Use line laser scanning to collect point clouds of angular spherical target areas (all corner spheres on heterogeneous products), such as figure 2 As shown in the figure, considering the huge number of point clouds extracted from all corner spheres, the processing is very complicated. Therefore, in the specific implementation, all corner spheres can be segmented by setting the spatial range, and the interested segmentation area can be selected from them. Point cloud extraction, thereby reducing the amount of computation. Further, in order to improve the measurement accuracy, bilateral filtering is performed on the extracted point cloud to remove noise, and the filtered point cloud is obtained. Among them, the basic idea of bilateral fi...
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The invention discloses a method for detecting the spatial position of a spherical center of an angular sphere in a discontinuous area, comprising the following steps: obtaining a point cloud of a target area of the angular sphere; obtaining the sphere axis space equation of the angular sphere according to the point cloud; using K The -means clustering algorithm performs clustering on the endpoints corresponding to each point in the point cloud to obtain the cluster center of the endpoint; obtains the spherical center of the corner sphere according to the sphere axis space equation and the cluster center. The purpose of the present invention is to provide a method for detecting the spatial position of the angular spherical center in a discontinuous area, which does not contact the surface of the product during the detection process, and will not cause damage to the product.
Description
technical field [0001] The invention relates to the technical field of industrial measurement, in particular to a method for detecting the spatial position of a spherical center of an angular sphere in a discontinuous area. Background technique [0002] Heterogeneous products have multiple support angles, each of which is represented as a small angular sphere, such as figure 1 As shown, in the assembly process, the space position of the center of the sphere formed by a plurality of corner spheres needs to be detected. Incomplete and small-area measurement is a difficulty in the field of measurement. The global parameters are described by locally available information. Traditionally, the contact three-coordinate measurement method is mostly used, which has low efficiency and easy damage to the surface of the product. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a method for detecting the spatial position of the angular spherical cent...
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IPC IPC(8): G01B11/00G01B11/24G06V10/762G06K9/62G06T7/73G06T7/66
CPCG01B11/002G01B11/24G06T7/73G06T7/66G06T2207/10028G06T2207/20028G06F18/23213
Inventor 于长志刘延龙李芳张连新孙鹏飞曹宇付磊肖虹
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS