...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Coastal engineering >Virtual wave gauges based upon stereo imaging for measuring surface wave characteristics
【24h】

Virtual wave gauges based upon stereo imaging for measuring surface wave characteristics

机译：基于立体成像的虚拟波表，用于测量表面波特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A virtual wave gauge (VWG) technique based on stereo imaging is developed to remotely measure water wave height, period, and direction. VWG minimizes computational costs by directly tracking the elevation of the water surface at selected points of interest using a Eulerian based dynamic searching algorithm. Results show that the VWG technique developed in this paper dramatically improves efficiency by two orders of magnitude compared to the traditional Lagrangian-Eulerian based point cloud method of stereo image processing. VWG is tested against traditional wave wire gauges to within 98% accuracy for significant wave height. Furthermore, the flexibility of the VWG is demonstrated in two field applications. First in an offshore breaking wave case, an array of VWGs is used to efficiently measure wave directionality. Second to investigate the reflection coefficient of a rock-mounted structure interacting with nearshore waves, linear and spatial VWG arrays are designed and implemented based on a priori information of the wave field from a preliminary VWG measurement. Overall, we demonstrate that the flexible and computational efficient VWG technique has the potential to make real-time remote stereo imaging wave measurements a reality.
机译：开发了基于立体成像的虚拟波浪仪（VWG）技术来远程测量水波高度，周期和方向。 VWG通过使用基于欧拉的动态搜索算法直接跟踪选定兴趣点的水面高度，从而将计算成本降至最低。结果表明，与传统的基于Lagrangian-Eulerian的立体图像点云方法相比，本文开发的VWG技术将效率显着提高了两个数量级。 VWG经过传统波浪线规的测试，精度达到98％以内，可显着提高波高。此外，VWG的灵活性在两个现场应用中得到了证明。首先，在海上破碎波情况下，使用VWG阵列有效地测量波浪方向性。其次，为了研究岩石结构与近岸波相互作用的反射系数，基于来自初步VWG测量的波场先验信息，设计并实现了线性和空间VWG阵列。总体而言，我们证明了灵活且计算效率高的VWG技术具有使实时远程立体成像波测量成为现实的潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号