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Refraction Wiggles for Measuring Fluid Depth and Velocity from Video
Published on Oct 29, 20144161 Views
We present principled algorithms for measuring the velocity and 3D location of refractive fluids, such as hot air or gas, from natural videos with textured backgrounds. Our main observation is that in
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Chapter list
Refraction Wiggles for Measuring Fluid Depth and Velocity from Video00:00
Measure refractive flow velocity and depth from natural videos00:07
Flow Velocity and Depth Recovered from Videos00:49
Outline - 101:16
Potential Applications for fluid motion estimation01:29
Related work - 101:44
Related work - 202:11
Related work - 302:38
Related work - 403:07
Outline - 203:46
Outline of the algorithm03:52
Wiggle features04:31
Example of Wiggle Features05:11
Outline - 305:39
Fluid Stereo should fuse wiggle motions, not image intensities05:44
Example of Refractive Stereo07:26
Outline - 407:47
Fluid Flow should match of the wiggle features between neighboring frames (the flow of the flow)08:02
Fluid Flow should match the wiggle features between neighboring frames (the flow of the flow)08:31
Example of Refractive Flow09:24
Brightness Constancy vs. Wiggle Constancy09:47
Outline - 510:14
Probabilistic Optical Flow to Calculate Wiggle Features10:22
Probabilistic Refractive Flow10:52
Outline - 612:06
Evaluate the refractive flow on simulated sequence12:10
Real Sequence: Hairdryer (1000fps)12:36
Comparison with Velocimeter Measurements12:54
Real Sequence: Lights13:26
Real Sequence: Hand13:50
Wiggle features14:05
Thank you!14:45