Dense optical flow algorithm

obj.setOpticalFlow(optFlowType)
obj.setOpticalFlow(optFlowType, 'OptionName',optionValue, ...)

Input

• optFlowType Dense optical flow algorithm. One of:
  • FarnebackOpticalFlow wrapper for cv.calcOpticalFlowFarneback function.
  • DualTVL1OpticalFlow wrapper for cv.DualTVL1OpticalFlow class.
  • FarnebackOpticalFlowCUDA wrapper for cv::cuda::FarnebackOpticalFlow (requires CUDA)
  • DualTVL1OpticalFlowCUDA wrapper for cv::cuda::OpticalFlowDual_TVL1 (requires CUDA)
  • BroxOpticalFlowCUDA wrapper for cv::cuda::BroxOpticalFlow (requires CUDA)
  • PyrLKOpticalFlowCUDA wrapper for cv::cuda::DensePyrLKOpticalFlow (requires CUDA)

Options

The following are options for the various algorithms:

FarnebackOpticalFlow, FarnebackOpticalFlowCUDA

See cv.calcOpticalFlowFarneback for a description of the options:

• PyrScale default 0.5
• LevelsNumber default 5
• WindowSize default 13
• Iterations default 10
• PolyN default 5
• PolySigma default 1.1
• Flags default 0

DualTVL1OpticalFlow, DualTVL1OpticalFlowCUDA

See cv.DualTVL1OpticalFlow for a description of the options:

• Tau default 0.25
• Lambda default 0.15
• Theta default 0.3
• ScalesNumber default 5
• WarpingsNumber default 5
• Epsilon default 0.01
• Iterations default 10
• UseInitialFlow default false

BroxOpticalFlowCUDA

• Alpha default 0.197
• Gamma default 50.0
• ScaleFactor default 0.8
• InnerIterations default 10
• OuterIterations default 77
• SolverIterations default 10

PyrLKOpticalFlowCUDA

See cv.calcOpticalFlowPyrLK for a description of the options:

• WindowSize default 13
• MaxLevel default 3
• Iterations default 30