Freeman William T.,Durand Frederic,Xue Tianfan,Rubinstein Michael,Wadhwa Neal
申请号：
US201414279254
公开号：
US9710917(B2)
申请日:
2014.05.15
申请国别(地区):
美国
年份:
2017
代理人:
Hamilton, Brook, Smith & Reynolds, P.C.
摘要：
An imaging method and corresponding apparatus according to an embodiment of the present invention enables measurement and visualization of fluid flow. An embodiment method includes obtaining video captured by a video camera with an imaging plane. Representations of motions in the video are correlated. A textured background of the scene can be modeled as stationary, with a refractive field translating between background and video camera. This approach offers multiple advantages over conventional fluid flow visualization, including an ability to use ordinary video equipment outside a laboratory without particle injection. Even natural backgrounds can be used, and fluid motion can be distinguished from refraction changes. Depth and three-dimensional information can be recovered using stereo video, and uncertainty methods can enhance measurement robustness where backgrounds are less textured. Example applications can include avionics and hydrocarbon leak detection.
