Compression of ultrasonic signals with the lifting scheme wavelet transform
Source abstract
Abstract
The wavelet transform based on a lifting scheme was applied to compress the ultrasonic echo signals of pipeline defects. The advantages of lifting are the custom-design property, the speedup of the fast wavelet transform, and the promotion of fully in-place calculation of the wavelet transform. The optimum wavelet base for decomposition can be decided according to the wavelet coefficient energy ratio. The optimum number of decomposition levels can be chosen via considering the percent root-mean-square difference and the correlation coefficients. The optimum compression ratio of ultrasonic echo signals can be obtained as well via considering the percent root-mean-square difference and the correlation coefficients.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ultrasonics and Acoustic Wave Propagation · Image and Signal Denoising Methods · Non-Destructive Testing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (10)
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