Trait opencv::prelude::SuperpixelLSC

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pub trait SuperpixelLSC: AlgorithmTrait + SuperpixelLSCConst {
    // Required method
    fn as_raw_mut_SuperpixelLSC(&mut self) -> *mut c_void;

    // Provided methods
    fn iterate(&mut self, num_iterations: i32) -> Result<()> { ... }
    fn enforce_label_connectivity(
        &mut self,
        min_element_size: i32
    ) -> Result<()> { ... }
}
Expand description

Class implementing the LSC (Linear Spectral Clustering) superpixels algorithm described in LiCVPR2015LSC.

LSC (Linear Spectral Clustering) produces compact and uniform superpixels with low computational costs. Basically, a normalized cuts formulation of the superpixel segmentation is adopted based on a similarity metric that measures the color similarity and space proximity between image pixels. LSC is of linear computational complexity and high memory efficiency and is able to preserve global properties of images

Required Methods§

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fn as_raw_mut_SuperpixelLSC(&mut self) -> *mut c_void

Provided Methods§

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fn iterate(&mut self, num_iterations: i32) -> Result<()>

Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object.

This function can be called again without the need of initializing the algorithm with createSuperpixelLSC(). This save the computational cost of allocating memory for all the structures of the algorithm.

Parameters
  • num_iterations: Number of iterations. Higher number improves the result.

The function computes the superpixels segmentation of an image with the parameters initialized with the function createSuperpixelLSC(). The algorithms starts from a grid of superpixels and then refines the boundaries by proposing updates of edges boundaries.

C++ default parameters
  • num_iterations: 10
source

fn enforce_label_connectivity(&mut self, min_element_size: i32) -> Result<()>

Enforce label connectivity.

Parameters
  • min_element_size: The minimum element size in percents that should be absorbed into a bigger superpixel. Given resulted average superpixel size valid value should be in 0-100 range, 25 means that less then a quarter sized superpixel should be absorbed, this is default.

The function merge component that is too small, assigning the previously found adjacent label to this component. Calling this function may change the final number of superpixels.

C++ default parameters
  • min_element_size: 25

Implementors§