Struct PCTSignaturesSQFD 

pub struct PCTSignaturesSQFD { /* private fields */ }

Class implementing Signature Quadratic Form Distance (SQFD).

See also

Christian Beecks, Merih Seran Uysal, Thomas Seidl. Signature quadratic form distance. In Proceedings of the ACM International Conference on Image and Video Retrieval, pages 438-445. ACM, 2010. BeecksUS10

Implementations

impl PCTSignaturesSQFD

pub fn create( distance_function: i32, similarity_function: i32, similarity_parameter: f32, ) -> Result<Ptr<PCTSignaturesSQFD>>

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters

• distanceFunction: Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY
• similarityFunction: Similarity function selector. Default: HEURISTIC Available: MINUS, GAUSSIAN, HEURISTIC
• similarityParameter: Parameter of the similarity function.

C++ default parameters

• distance_function: 3
• similarity_function: 2
• similarity_parameter: 1.0f

pub fn create_def() -> Result<Ptr<PCTSignaturesSQFD>>

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters

• distanceFunction: Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY
• similarityFunction: Similarity function selector. Default: HEURISTIC Available: MINUS, GAUSSIAN, HEURISTIC
• similarityParameter: Parameter of the similarity function.

Note

This alternative version of PCTSignaturesSQFD::create function uses the following default values for its arguments:

• distance_function: 3
• similarity_function: 2
• similarity_parameter: 1.0f

Trait Implementations

impl AlgorithmTrait for PCTSignaturesSQFD

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 PCTSignaturesSQFD

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 PCTSignaturesSQFD

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

Wrap the specified raw pointer

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

Return the underlying raw pointer while consuming this wrapper.

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

Return the underlying raw pointer.

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

Return the underlying mutable raw pointer

impl Debug for PCTSignaturesSQFD

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

Formats the value using the given formatter.

impl Drop for PCTSignaturesSQFD

fn drop(&mut self)

Executes the destructor for this type.

impl From<PCTSignaturesSQFD> for Algorithm

fn from(s: PCTSignaturesSQFD) -> Self

Converts to this type from the input type.

impl PCTSignaturesSQFDTrait for PCTSignaturesSQFD

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

impl PCTSignaturesSQFDTraitConst for PCTSignaturesSQFD

fn as_raw_PCTSignaturesSQFD(&self) -> *const c_void

fn compute_quadratic_form_distance( &self, _signature0: &impl ToInputArray, _signature1: &impl ToInputArray, ) -> Result<f32>

Computes Signature Quadratic Form Distance of two signatures.

fn compute_quadratic_form_distances( &self, source_signature: &impl MatTraitConst, image_signatures: &Vector<Mat>, distances: &mut Vector<f32>, ) -> Result<()>

Computes Signature Quadratic Form Distance between the reference signature and each of the other image signatures.

impl Send for PCTSignaturesSQFD