Wavelet ridge extraction based on improved Carazy Climber algorithm

Journal of Lanzhou University of Technology ›› 2024, Vol. 50 ›› Issue (1): 132-138.

• Architectural Sciences • Previous Articles Next Articles

Wavelet ridge extraction based on improved Carazy Climber algorithm

ZHAO Li-jie^1,2,3, LI Wen-wen², LIU Jin², JIN Dong-li²

1. Tianjin Agricultural University, College of Water Conservancy Engineering, Tianjin 300072, China;
2. School of Civil Engineering, School of Hebei University of Engineering, Handan 056038,China;
3. Tianjin University, School of Civil Engineering, Tianjin 300350, China

Received:2020-12-07 Online:2024-02-28 Published:2024-03-04

Abstract

Abstract: For the problems of time-consuming and low efficiency of extracting multiple wavelet ridges using the traditional Crazy Climber algorithm, an improved Crazy Climber algorithm in simulating normalizing cooling was proposed. The continuous wavelet transform is applied to the response of the structural vibration. In the time-frequency plane composed of the wavelet coefficients amplitudes, the wavelet ridge points are tracked by the simulating normalizing cooling algorithm to make each random point gather on the ridge line, eliminating the operation time. Through the numerical simulation of single-degree of freedom and multi-degree of freedom system, the computational efficiency and recognition accuracy of the proposed algorithm are compared with that of the traditional Crazy Climber algorithm, and the advantages of the proposed algorithm are demonstrated.

Key words: wavelet transform, ridge extraction, Crazy Climber algorithm, normalize cooling

CLC Number:

TU311

ZHAO Li-jie, LI Wen-wen, LIU Jin, JIN Dong-li. Wavelet ridge extraction based on improved Carazy Climber algorithm[J]. Journal of Lanzhou University of Technology, 2024, 50(1): 132-138.

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Wavelet ridge extraction based on improved Carazy Climber algorithm

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