STABILITY OF PHASE INFORMATION
STABILITY OF PHASE INFORMATION
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DOI：
10.1109/34.250844
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发表时间：
1993-12-01
影响因子：
23.6
通讯作者：
JEPSON, AD
中科院分区：
文献类型：
--
作者：
FLEET, DJ;JEPSON, AD
本文研究了局部相位信息在图像速度和双眼视差测量中的鲁棒性。它解决了相位行为对初始滤波器的依赖，以及在三维场景的不同视图之间存在的图像变化。我们特别感兴趣的是相位在几何变形方面的稳定性，以及它作为空间位置函数的线性。这些特性对相位信息的使用很重要，并且取决于滤波器的形式以及它们的频率带宽。用Jepson和Fleet描述的相奇点模型讨论了相不稳定性。除了基于相位的方法外，这些结果与微分光流方法和过零跟踪直接相关。
This paper concerns the robustness of local phase information for measuring image velocity and binocular disparity. It addresses the dependence of phase behavior on the initial filters as well as the image variations that exist between different views of a 3-D scene. We are particularly interested in the stability of phase with respect to geometric deformations, and its linearity as a function of spatial position. These properties are important to the use of phase information, and are shown to depend on the form of the filters as well as their frequency bandwidths. Phase instabilities are also discussed using the model of phase singularities described by Jepson and Fleet. In addition to phase-based methods, these results are directly relevant to differential optical flow methods and zero-crossing tracking.