Struct opencv::img_hash::MarrHildrethHash

pub struct MarrHildrethHash { /* fields omitted */ }

Marr-Hildreth Operator Based Hash, slowest but more discriminative.

See zauner2010implementation for details.

Methods

impl MarrHildrethHash

pub fn as_raw_MarrHildrethHash(&self) -> *mut c_void

pub unsafe fn from_raw_ptr(ptr: *mut c_void) -> Self

impl MarrHildrethHash

pub fn get_alpha(&self) -> Result<f32>

self explain

pub fn get_scale(&self) -> Result<f32>

self explain

pub fn set_kernel_param(&mut self, alpha: f32, scale: f32) -> Result<()>

Set Mh kernel parameters

Parameters

• alpha: int scale factor for marr wavelet (default=2).
• scale: int level of scale factor (default = 1)

pub fn create(alpha: f32, scale: f32) -> Result<PtrOfMarrHildrethHash>

Parameters

• alpha: int scale factor for marr wavelet (default=2).
• scale: int level of scale factor (default = 1)

C++ default parameters

• alpha: 2.0f
• scale: 1.0f

Trait Implementations

impl AlgorithmTrait for MarrHildrethHash

fn as_raw_Algorithm(&self) -> *mut c_void

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

Clears the algorithm state

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

Stores algorithm parameters in a file storage

fn write_1(&self, fs: &PtrOfFileStorage, name: &str) -> Result<()>

simplified API for language bindings

fn read(&mut self, _fn: &FileNode) -> Result<()>

Reads algorithm parameters from a file storage

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 Drop for MarrHildrethHash

fn drop(&mut self)

Executes the destructor for this type.

impl ImgHashBaseTrait for MarrHildrethHash

fn as_raw_ImgHashBase(&self) -> *mut c_void

impl Send for MarrHildrethHash