Three-dimensional motion of an object determined by an image sequence of a video theodolite

1994 ◽  
Author(s):  
U. Heck
Keyword(s):  
Three Dimensional ◽  
Image Sequence

Adaptive defect detection of 3D image of nano CT based on wavelet decomposition

2021 ◽  
pp. 1-15
Author(s):  
Shirong Zhang ◽  
Lian Wu
Keyword(s):  
Defect Detection ◽  
Wavelet Decomposition ◽  
Detection Method ◽  
Design Method ◽  
Three Dimensional ◽  
Image Sequence ◽  
Adaptive Detection ◽  
3D Image ◽  
Dimensional Image ◽  
Image Defect

The defect detection of 3D image of nano CT under different interference has the phenomenon of prominent dislocation. Therefore, an adaptive detection method of 3D image defect of nano CT based on wavelet decomposition is proposed. Analyze the noise of three-dimensional image of nano CT, determine the mixed filtering of image sequence according to the different noise properties, evaluate the mixed filtering of image sequence, complete the preprocessing of three-dimensional image of nano CT, fuse the three-dimensional image of nano CT decomposed by wavelet after preprocessing, enhance the image after decomposition, and realize the defect adaptive detection through the characteristics of wavelet decomposition. The experimental results show that the design method can effectively detect the interference and solve the problems of traditional methods.

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