A Feature Point Extraction Method by Poisson Equation

Feature Point Extraction Method of X-ray Image Based on Scale Invariant is proposed in this paper for industrial X-ray image with low contrast and some artifacts. First of all, the scale transformation of original image is adopted by the Gaussian kernel to building the DOG multi-scale pyramid. Then, the location and scale of the key points is fixed by the three-dimensional quadratic function. Finally, the Simply SIFT descriptor illustrates the key points. Experimental results show that the algorithm has good stability in translation, rotation and affine transformation, especially with 10 percent normalized Gaussian noise, this algorithm can still be detected feature points accuracy.

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A fast feature point extraction method for optical tracking system

2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) ◽

10.1109/i2mtc50364.2021.9459808 ◽

2021 ◽

Author(s):

Songlin Bi ◽

Yonggang Gu ◽

Zhihong Zhang ◽

Jiaqi Zou ◽

Chao Zhai ◽

...

Keyword(s):

Extraction Method ◽

Tracking System ◽

Optical Tracking ◽

Feature Point ◽

Optical Tracking System ◽

Feature Point Extraction

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Welding seam detection and feature point extraction for robotic arc welding using laser-vision

2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) ◽

10.1109/urai.2016.7625795 ◽

2016 ◽

Cited By ~ 7

Author(s):

Jun-Di Sun ◽

Guang-Zhong Cao ◽

Su-Dan Huang ◽

Ken Chen ◽

Jun-Jun Yang

Keyword(s):

Arc Welding ◽

Feature Point ◽

Welding Seam ◽

Feature Point Extraction ◽

Robotic Arc Welding ◽

Laser Vision

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3D Model Skeleton Extraction Based on Poisson Equation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.65.407 ◽

2011 ◽

Vol 65 ◽

pp. 407-410

Author(s):

Xiao Qing Feng

Keyword(s):

Energy Distribution ◽

Poisson Equation ◽

Critical Points ◽

Extraction Method ◽

3D Model ◽

Geodesic Distance ◽

Extraction Methods ◽

Skeleton Extraction ◽

Topology Structure

Existing skeleton extraction methods, however, are often sensitive to noises and disconnected. This paper proposed a skeleton extraction method based on Poisson equation. It can approximate the topology structure of the input 3D model well, and avoid the broken lines. First, the proposed method extracts critical points of a 3D model by using Poisson equation and geodesic distance. Then the extracted critical points are connected and star skeleton of the 3D model is defined. Finally, the reverse force filed based Poisson energy distribution is used to push star skeleton into final result. Experiments show that the extracted skeleton is continuous and has no small branches affected model noises.

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