Struct opencv::shape::ShapeContextDistanceExtractor

pub struct ShapeContextDistanceExtractor { /* private fields */ }

---

/ / Implementation of the Shape Context descriptor and matching algorithm

proposed by Belongie et al. in “Shape Matching and Object Recognition Using Shape Contexts” (PAMI 2002). This implementation is packaged in a generic scheme, in order to allow you the implementation of the common variations of the original pipeline.

Trait Implementations

impl AlgorithmTrait for ShapeContextDistanceExtractor

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

fn clear(&mut self) -> Result<()>

Clears the algorithm state

fn read(&mut self, fn_: &impl FileNodeTraitConst) -> Result<()>

Reads algorithm parameters from a file storage

impl AlgorithmTraitConst for ShapeContextDistanceExtractor

fn as_raw_Algorithm(&self) -> *const c_void

fn write(&self, fs: &mut impl FileStorageTrait) -> Result<()>

Stores algorithm parameters in a file storage

fn write_1(&self, fs: &mut impl FileStorageTrait, name: &str) -> Result<()>

Stores algorithm parameters in a file storage

fn write_with_name(&self, fs: &Ptr<FileStorage>, name: &str) -> Result<()>

@deprecated

fn write_with_name_def(&self, fs: &Ptr<FileStorage>) -> Result<()>

👎Deprecated:

Note

Deprecated: ## Note This alternative version of AlgorithmTraitConst::write_with_name function uses the following default values for its arguments:

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

Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read

fn save(&self, filename: &str) -> Result<()>

Saves the algorithm to a file. In order to make this method work, the derived class must implement Algorithm::write(FileStorage& fs).

fn get_default_name(&self) -> Result<String>

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

impl Boxed for ShapeContextDistanceExtractor

unsafe fn from_raw( ptr: <ShapeContextDistanceExtractor as OpenCVFromExtern>::ExternReceive ) -> Self

Wrap the specified raw pointer

fn into_raw( self ) -> <ShapeContextDistanceExtractor as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying raw pointer while consuming this wrapper.

fn as_raw( &self ) -> <ShapeContextDistanceExtractor as OpenCVTypeExternContainer>::ExternSend

Return the underlying raw pointer.

fn as_raw_mut( &mut self ) -> <ShapeContextDistanceExtractor as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying mutable raw pointer

impl Debug for ShapeContextDistanceExtractor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for ShapeContextDistanceExtractor

fn drop(&mut self)

Executes the destructor for this type.

impl From<ShapeContextDistanceExtractor> for Algorithm

fn from(s: ShapeContextDistanceExtractor) -> Self

Converts to this type from the input type.

impl From<ShapeContextDistanceExtractor> for ShapeDistanceExtractor

fn from(s: ShapeContextDistanceExtractor) -> Self

Converts to this type from the input type.

impl ShapeContextDistanceExtractorTrait for ShapeContextDistanceExtractor

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

fn set_angular_bins(&mut self, n_angular_bins: i32) -> Result<()>

Establish the number of angular bins for the Shape Context Descriptor used in the shape matching pipeline.

fn set_radial_bins(&mut self, n_radial_bins: i32) -> Result<()>

Establish the number of radial bins for the Shape Context Descriptor used in the shape matching pipeline.

fn set_inner_radius(&mut self, inner_radius: f32) -> Result<()>

Set the inner radius of the shape context descriptor.

fn set_outer_radius(&mut self, outer_radius: f32) -> Result<()>

Set the outer radius of the shape context descriptor.

fn set_rotation_invariant(&mut self, rotation_invariant: bool) -> Result<()>

fn set_shape_context_weight(&mut self, shape_context_weight: f32) -> Result<()>

Set the weight of the shape context distance in the final value of the shape distance. The shape context distance between two shapes is defined as the symmetric sum of shape context matching costs over best matching points. The final value of the shape distance is a user-defined linear combination of the shape context distance, an image appearance distance, and a bending energy.

fn set_image_appearance_weight( &mut self, image_appearance_weight: f32 ) -> Result<()>

Set the weight of the Image Appearance cost in the final value of the shape distance. The image appearance cost is defined as the sum of squared brightness differences in Gaussian windows around corresponding image points. The final value of the shape distance is a user-defined linear combination of the shape context distance, an image appearance distance, and a bending energy. If this value is set to a number different from 0, is mandatory to set the images that correspond to each shape.

fn set_bending_energy_weight( &mut self, bending_energy_weight: f32 ) -> Result<()>

Set the weight of the Bending Energy in the final value of the shape distance. The bending energy definition depends on what transformation is being used to align the shapes. The final value of the shape distance is a user-defined linear combination of the shape context distance, an image appearance distance, and a bending energy.

fn set_images( &mut self, image1: &impl ToInputArray, image2: &impl ToInputArray ) -> Result<()>

Set the images that correspond to each shape. This images are used in the calculation of the Image Appearance cost.

fn set_iterations(&mut self, iterations: i32) -> Result<()>

fn set_cost_extractor( &mut self, comparer: Ptr<HistogramCostExtractor> ) -> Result<()>

Set the algorithm used for building the shape context descriptor cost matrix.

fn set_std_dev(&mut self, sigma: f32) -> Result<()>

Set the value of the standard deviation for the Gaussian window for the image appearance cost.

fn set_transform_algorithm( &mut self, transformer: Ptr<ShapeTransformer> ) -> Result<()>

Set the algorithm used for aligning the shapes.

impl ShapeContextDistanceExtractorTraitConst for ShapeContextDistanceExtractor

fn as_raw_ShapeContextDistanceExtractor(&self) -> *const c_void

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

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

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

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

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

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

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

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

fn get_images( &self, image1: &mut impl ToOutputArray, image2: &mut impl ToOutputArray ) -> Result<()>

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

fn get_cost_extractor(&self) -> Result<Ptr<HistogramCostExtractor>>

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

fn get_transform_algorithm(&self) -> Result<Ptr<ShapeTransformer>>

impl ShapeDistanceExtractorTrait for ShapeContextDistanceExtractor

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

fn compute_distance( &mut self, contour1: &impl ToInputArray, contour2: &impl ToInputArray ) -> Result<f32>

Compute the shape distance between two shapes defined by its contours.

impl ShapeDistanceExtractorTraitConst for ShapeContextDistanceExtractor

fn as_raw_ShapeDistanceExtractor(&self) -> *const c_void

impl TryFrom<ShapeDistanceExtractor> for ShapeContextDistanceExtractor

type Error = Error

The type returned in the event of a conversion error.

fn try_from(s: ShapeDistanceExtractor) -> Result<Self>

Performs the conversion.

impl Send for ShapeContextDistanceExtractor