Wave Swash Velocity Estimation Using Ridgelet Transform

摘要：

The measurement of nearshore wave swash and understand of wave swash characteristics are very important in nearshore environment research, coastal zone management and ocean engineering. To estimate swash velocity from nearshore video images, a computational algorithm based on ridgelet transform is proposed. In the proposed approach, a time stack image with linear feature of wave swash fronts is derived from specific slice position in the input image sequences. Then, edge detection is processed to enhance the image feature. Moreover, ridgelet transform is calculated and the energy is computed using variance statistics. Meanwhile, a peak angle is extracted as the direction of the linear feature of wave swash fronts. Furthermore, the swash velocity can be calculated with the linear slope. Experimental results indicate that the proposed methodology is effective and validity.

关键词： wave swash velocity ridgelet transform Radon transform wavelet transform.

作者: Suoping Zhang Chuntian Zhang Zhanhui Qi

作者单位: Tianjin University,Tianjin 300072,China National Ocean Technology Center,Tianjin 300112,China Tianjin University,Tianjin 300072,China National Ocean Technology Center,Tianjin 300112,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 4306-4309

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）