Struct Detail_TrackerSamplerPF 

pub struct Detail_TrackerSamplerPF { /* private fields */ }

This sampler is based on particle filtering.

In principle, it can be thought of as performing some sort of optimization (and indeed, this tracker uses opencv’s optim module), where tracker seeks to find the rectangle in given frame, which is the most “similar” to the initial rectangle (the one, given through the constructor).

The optimization performed is stochastic and somehow resembles genetic algorithms, where on each new image received (submitted via TrackerSamplerPF::sampling()) we start with the region bounded by boundingBox, then generate several “perturbed” boxes, take the ones most similar to the original. This selection round is repeated several times. At the end, we hope that only the most promising box remaining, and these are combined to produce the subrectangle of image, which is put as a sole element in array sample.

It should be noted, that the definition of “similarity” between two rectangles is based on comparing their histograms. As experiments show, tracker is not very succesfull if target is assumed to strongly change its dimensions.

Implementations

impl Detail_TrackerSamplerPF

pub fn new( chosen_rect: &impl MatTraitConst, parameters: &impl Detail_TrackerSamplerPF_ParamsTraitConst, ) -> Result<Detail_TrackerSamplerPF>

Constructor

Parameters

• chosenRect: Initial rectangle, that is supposed to contain target we’d like to track.
• parameters:

C++ default parameters

• parameters: TrackerSamplerPF::Params()

pub fn new_def( chosen_rect: &impl MatTraitConst, ) -> Result<Detail_TrackerSamplerPF>

Constructor

Parameters

• chosenRect: Initial rectangle, that is supposed to contain target we’d like to track.
• parameters:

Note

This alternative version of [new] function uses the following default values for its arguments:

• parameters: TrackerSamplerPF::Params()

Trait Implementations

impl Boxed for Detail_TrackerSamplerPF

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

Wrap the specified raw pointer

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

Return the underlying raw pointer while consuming this wrapper.

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

Return the underlying raw pointer.

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

Return the underlying mutable raw pointer

impl Debug for Detail_TrackerSamplerPF

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

Formats the value using the given formatter.

impl Detail_TrackerContribSamplerAlgorithmTrait for Detail_TrackerSamplerPF

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

fn sampling( &mut self, image: &impl MatTraitConst, bounding_box: Rect, sample: &mut Vector<Mat>, ) -> Result<bool>

Computes the regions starting from a position in an image.

impl Detail_TrackerContribSamplerAlgorithmTraitConst for Detail_TrackerSamplerPF

fn as_raw_Detail_TrackerContribSamplerAlgorithm(&self) -> *const c_void

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

Get the name of the specific TrackerContribSamplerAlgorithm

impl Detail_TrackerSamplerAlgorithmTrait for Detail_TrackerSamplerPF

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

fn sampling( &mut self, image: &impl MatTraitConst, bounding_box: Rect, sample: &mut Vector<Mat>, ) -> Result<bool>

Computes the regions starting from a position in an image.

impl Detail_TrackerSamplerAlgorithmTraitConst for Detail_TrackerSamplerPF

fn as_raw_Detail_TrackerSamplerAlgorithm(&self) -> *const c_void

impl Detail_TrackerSamplerPFTrait for Detail_TrackerSamplerPF

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

impl Detail_TrackerSamplerPFTraitConst for Detail_TrackerSamplerPF

fn as_raw_Detail_TrackerSamplerPF(&self) -> *const c_void

impl Drop for Detail_TrackerSamplerPF

fn drop(&mut self)

Executes the destructor for this type.

impl From<Detail_TrackerSamplerPF> for Detail_TrackerContribSamplerAlgorithm

fn from(s: Detail_TrackerSamplerPF) -> Self

Converts to this type from the input type.

impl From<Detail_TrackerSamplerPF> for Detail_TrackerSamplerAlgorithm

fn from(s: Detail_TrackerSamplerPF) -> Self

Converts to this type from the input type.

impl TryFrom<Detail_TrackerContribSamplerAlgorithm> for Detail_TrackerSamplerPF

type Error = Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Send for Detail_TrackerSamplerPF