Image analysis techniques for holograms of dynamic oceanic particles.
Image analysis techniques for holograms of dynamic oceanic particles.
复制标题
动态海洋颗粒全息图的图像分析技术。
作者：
P. R. Payne;K. Carder;R. Steward
研制了一种全息图像分析系统，用于测量三维空间中微观粒子的位置、速度、尺寸和形状。使用在3-D空间中注册的在线远场配置来重建在各个全息帧上顺序记录的颗粒的图像，并且确定顺序帧之间的颗粒位移（速度）。使用帧之间的经过时间计算颗粒沉降速度。处理重建的全息图像的数字化视频信号以确定颗粒尺寸、形状和面积，以便于逐帧通过形状进行识别并计算颗粒比重。开发了一个编目系统，以提供有效的数据管理。
A holographic image analysis system has been developed to measure position, velocity, size, and shape of microscopic particles settling in 3-D space. Images of particles recorded sequentially on individual holographic frames are reconstructed using an in-line far-field configuration, registered in 3-D space, and particle displacements (velocities) between sequential frames are determined. Particle settling velocity is calculated using elapsed time between frames. Digitized video signals of the reconstructed holographic images are processed to determine particle size, shape, and area to facilitate identification by shape from frame to frame and to calculate particle specific gravities. A cataloging system was developed to provide efficient data management.