opencv::mod_prelude

Trait DISOpticalFlowTraitConst

Source
pub trait DISOpticalFlowTraitConst: DenseOpticalFlowTraitConst {
    // Required method
    fn as_raw_DISOpticalFlow(&self) -> *const c_void;

    // Provided methods
    fn get_finest_scale(&self) -> Result<i32> { ... }
    fn get_patch_size(&self) -> Result<i32> { ... }
    fn get_patch_stride(&self) -> Result<i32> { ... }
    fn get_gradient_descent_iterations(&self) -> Result<i32> { ... }
    fn get_variational_refinement_iterations(&self) -> Result<i32> { ... }
    fn get_variational_refinement_alpha(&self) -> Result<f32> { ... }
    fn get_variational_refinement_delta(&self) -> Result<f32> { ... }
    fn get_variational_refinement_gamma(&self) -> Result<f32> { ... }
    fn get_variational_refinement_epsilon(&self) -> Result<f32> { ... }
    fn get_use_mean_normalization(&self) -> Result<bool> { ... }
    fn get_use_spatial_propagation(&self) -> Result<bool> { ... }
}
Expand description

Constant methods for crate::video::DISOpticalFlow

Required Methods§

Provided Methods§

Source

fn get_finest_scale(&self) -> Result<i32>

Finest level of the Gaussian pyramid on which the flow is computed (zero level corresponds to the original image resolution). The final flow is obtained by bilinear upscaling.

§See also

setFinestScale

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fn get_patch_size(&self) -> Result<i32>

Size of an image patch for matching (in pixels). Normally, default 8x8 patches work well enough in most cases.

§See also

setPatchSize

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fn get_patch_stride(&self) -> Result<i32>

Stride between neighbor patches. Must be less than patch size. Lower values correspond to higher flow quality.

§See also

setPatchStride

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fn get_gradient_descent_iterations(&self) -> Result<i32>

Maximum number of gradient descent iterations in the patch inverse search stage. Higher values may improve quality in some cases.

§See also

setGradientDescentIterations

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fn get_variational_refinement_iterations(&self) -> Result<i32>

Number of fixed point iterations of variational refinement per scale. Set to zero to disable variational refinement completely. Higher values will typically result in more smooth and high-quality flow.

§See also

setGradientDescentIterations

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fn get_variational_refinement_alpha(&self) -> Result<f32>

Weight of the smoothness term

§See also

setVariationalRefinementAlpha

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fn get_variational_refinement_delta(&self) -> Result<f32>

Weight of the color constancy term

§See also

setVariationalRefinementDelta

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fn get_variational_refinement_gamma(&self) -> Result<f32>

Weight of the gradient constancy term

§See also

setVariationalRefinementGamma

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fn get_variational_refinement_epsilon(&self) -> Result<f32>

Norm value shift for robust penalizer

§See also

setVariationalRefinementEpsilon

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fn get_use_mean_normalization(&self) -> Result<bool>

Whether to use mean-normalization of patches when computing patch distance. It is turned on by default as it typically provides a noticeable quality boost because of increased robustness to illumination variations. Turn it off if you are certain that your sequence doesn’t contain any changes in illumination.

§See also

setUseMeanNormalization

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fn get_use_spatial_propagation(&self) -> Result<bool>

Whether to use spatial propagation of good optical flow vectors. This option is turned on by default, as it tends to work better on average and can sometimes help recover from major errors introduced by the coarse-to-fine scheme employed by the DIS optical flow algorithm. Turning this option off can make the output flow field a bit smoother, however.

§See also

setUseSpatialPropagation

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§