Local Estimation of High Velocity Optical Flow with Correlation Image Sensor
Local Estimation of High Velocity Optical Flow with Correlation Image Sensor
复制标题
利用相关图像传感器进行高速光流的局部估计
DOI：
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复制
发表时间：
2014
期刊：
影响因子：
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通讯作者：
Tomohiro Kitagawa
中科院分区：
文献类型：
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作者：
H. Hontani;G. Oishi;Tomohiro Kitagawa
本文讨论了高速光流的估计问题。传统图像传感器捕获图像时，如果仅以图像亮度的时间常数为有效假设，则光流估计问题是不适定的。然而，当给定图像被相关图像传感器捕获时，可以在一定条件下使光流估计问题良定，并且可以局部估计每一帧中每个像素处的唯一光流。但当流速较大时，就不能满足这一条件。在本文中，我们提出了一种方法，可以估计高速光流的法向分量仅使用局部图像值在每一帧。从理论上推导了法向速度的计算公式，并揭示了该公式的成立条件。
In this article, the authors address a problem of the estimation of high velocity optical flow. When images are captured by conventional image sensors, the problem of the optical flow estimation is ill-posed if only the temporal constancy of the image brightness is the valid assumption. When given images are captured by the correlation image sensors, though, you can make the problem of the optical flow estimation well-posed under some condition and can locally estimate the unique optical flow at each pixel in each single frame. The condition though would not be satisfied when the flow velocity is high. In this article, we propose a method that can estimate the normal component of high velocity optical flow using only the local image values in each single frame. The equation used for estimating the normal velocity is theoretically derived and the condition the equation holds is also revealed.
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DOI：
10.1007/978-1-4939-7647-8_1
发表时间：
2018
期刊：
Neuromethods
影响因子：
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作者：
Joshi,AnandA
通讯作者：
Joshi,AnandA