Module opencv::optflow

Optical Flow Algorithms

Dense optical flow algorithms compute motion for each point:

• cv::optflow::calcOpticalFlowSF
• cv::optflow::createOptFlow_DeepFlow

Motion templates is alternative technique for detecting motion and computing its direction. See samples/motempl.py.

• cv::motempl::updateMotionHistory
• cv::motempl::calcMotionGradient
• cv::motempl::calcGlobalOrientation
• cv::motempl::segmentMotion

Functions reading and writing .flo files in “Middlebury” format, see: http://vision.middlebury.edu/flow/code/flow-code/README.txt

• cv::optflow::readOpticalFlow
• cv::optflow::writeOpticalFlow

Modules

• prelude

Structs

• DenseRLOFOpticalFlow
  Fast dense optical flow computation based on robust local optical flow (RLOF) algorithms and sparse-to-dense interpolation scheme.
• DualTVL1OpticalFlow
  “Dual TV L1” Optical Flow Algorithm.
• GPCDetails
• GPCMatchingParams
  Class encapsulating matching parameters.
• GPCPatchDescriptor
• GPCPatchSample
• GPCTrainingParams
  Class encapsulating training parameters.
• GPCTrainingSamples
  Class encapsulating training samples.
• GPCTree
  Class for individual tree.
• GPCTree_Node
• OpticalFlowPCAFlow
  PCAFlow algorithm.
• PCAPrior
  This class can be used for imposing a learned prior on the resulting optical flow. Solution will be regularized according to this prior. You need to generate appropriate prior file with “learn_prior.py” script beforehand.
• RLOFOpticalFlowParameter
  This is used store and set up the parameters of the robust local optical flow (RLOF) algoritm.
• SparseRLOFOpticalFlow
  Class used for calculation sparse optical flow and feature tracking with robust local optical flow (RLOF) algorithms.

Enums

• GPCDescType
  Descriptor types for the Global Patch Collider.
• InterpolationType
• SolverType
• SupportRegionType

Constants

• GPC_DESCRIPTOR_DCT
  Better quality but slow
• GPC_DESCRIPTOR_WHT
  Worse quality but much faster
• INTERP_EPIC
  < Edge-preserving interpolation using ximgproc::EdgeAwareInterpolator, see Revaud2015,Geistert2016.
• INTERP_GEO
  < Fast geodesic interpolation, see Geistert2016
• INTERP_RIC
  < SLIC based robust interpolation using ximgproc::RICInterpolator, see Hu2017.
• SR_CROSS
  < Apply a adaptive support region obtained by cross-based segmentation as described in Senst2014
• SR_FIXED
  < Apply a constant support region
• ST_BILINEAR
  < Apply optimized iterative refinement based bilinear equation solutions as described in Senst2013
• ST_STANDART
  < Apply standard iterative refinement

Traits

• DenseRLOFOpticalFlowTrait
  Mutable methods for crate::optflow::DenseRLOFOpticalFlow
• DenseRLOFOpticalFlowTraitConst
  Constant methods for crate::optflow::DenseRLOFOpticalFlow
• DualTVL1OpticalFlowTrait
  Mutable methods for crate::optflow::DualTVL1OpticalFlow
• DualTVL1OpticalFlowTraitConst
  Constant methods for crate::optflow::DualTVL1OpticalFlow
• GPCDetailsTrait
  Mutable methods for crate::optflow::GPCDetails
• GPCDetailsTraitConst
  Constant methods for crate::optflow::GPCDetails
• GPCPatchDescriptorTrait
  Mutable methods for crate::optflow::GPCPatchDescriptor
• GPCPatchDescriptorTraitConst
  Constant methods for crate::optflow::GPCPatchDescriptor
• GPCPatchSampleTrait
  Mutable methods for crate::optflow::GPCPatchSample
• GPCPatchSampleTraitConst
  Constant methods for crate::optflow::GPCPatchSample
• GPCTrainingSamplesTrait
  Mutable methods for crate::optflow::GPCTrainingSamples
• GPCTrainingSamplesTraitConst
  Constant methods for crate::optflow::GPCTrainingSamples
• GPCTreeTrait
  Mutable methods for crate::optflow::GPCTree
• GPCTreeTraitConst
  Constant methods for crate::optflow::GPCTree
• OpticalFlowPCAFlowTrait
  Mutable methods for crate::optflow::OpticalFlowPCAFlow
• OpticalFlowPCAFlowTraitConst
  Constant methods for crate::optflow::OpticalFlowPCAFlow
• PCAPriorTrait
  Mutable methods for crate::optflow::PCAPrior
• PCAPriorTraitConst
  Constant methods for crate::optflow::PCAPrior
• RLOFOpticalFlowParameterTrait
  Mutable methods for crate::optflow::RLOFOpticalFlowParameter
• RLOFOpticalFlowParameterTraitConst
  Constant methods for crate::optflow::RLOFOpticalFlowParameter
• SparseRLOFOpticalFlowTrait
  Mutable methods for crate::optflow::SparseRLOFOpticalFlow
• SparseRLOFOpticalFlowTraitConst
  Constant methods for crate::optflow::SparseRLOFOpticalFlow

Functions

• calc_global_orientation
  Calculates a global motion orientation in a selected region.
• calc_motion_gradient
  Calculates a gradient orientation of a motion history image.
• calc_optical_flow_dense_rlof
  Fast dense optical flow computation based on robust local optical flow (RLOF) algorithms and sparse-to-dense interpolation scheme.
• calc_optical_flow_sf
  Calculate an optical flow using “SimpleFlow” algorithm.
• calc_optical_flow_sf_1
  Calculate an optical flow using “SimpleFlow” algorithm.
• calc_optical_flow_sparse_rlof
  Calculates fast optical flow for a sparse feature set using the robust local optical flow (RLOF) similar to optflow::calcOpticalFlowPyrLK().
• calc_optical_flow_sparse_to_dense
  Fast dense optical flow based on PyrLK sparse matches interpolation.
• create_opt_flow_deep_flow
  DeepFlow optical flow algorithm implementation.
• create_opt_flow_dense_rlof
  Additional interface to the Dense RLOF algorithm - optflow::calcOpticalFlowDenseRLOF()
• create_opt_flow_dual_tvl1
  Creates instance of cv::DenseOpticalFlow
• create_opt_flow_farneback
  Additional interface to the Farneback’s algorithm - calcOpticalFlowFarneback()
• create_opt_flow_pca_flow
  Creates an instance of PCAFlow
• create_opt_flow_simple_flow
  Additional interface to the SimpleFlow algorithm - calcOpticalFlowSF()
• create_opt_flow_sparse_rlof
  Additional interface to the Sparse RLOF algorithm - optflow::calcOpticalFlowSparseRLOF()
• create_opt_flow_sparse_to_dense
  Additional interface to the SparseToDenseFlow algorithm - calcOpticalFlowSparseToDense()
• read
• segment_motion
  Splits a motion history image into a few parts corresponding to separate independent motions (for example, left hand, right hand).
• update_motion_history
  Updates the motion history image by a moving silhouette.
• write

Type Definitions

• GPCSamplesVector