Struct opencv::tracking::TrackerSamplerPF

pub struct TrackerSamplerPF { /* fields omitted */ }

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 TrackerSamplerPF

pub fn as_raw_TrackerSamplerPF(&self) -> *const c_void

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

impl TrackerSamplerPF

pub fn new(
    chosen_rect: &Mat,
    parameters: &TrackerSamplerPF_Params
) -> Result<TrackerSamplerPF>

Constructor

Parameters

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

C++ default parameters

• parameters: TrackerSamplerPF::Params()

Trait Implementations

impl Boxed for TrackerSamplerPF

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

Wrap the specified raw pointer

fn into_raw(self) -> *mut c_void

Return an the underlying raw pointer while consuming this wrapper.

fn as_raw(&self) -> *const c_void

Return the underlying raw pointer.

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

Return the underlying mutable raw pointer

impl Drop for TrackerSamplerPF

fn drop(&mut self)

Executes the destructor for this type.

impl Send for TrackerSamplerPF

impl TrackerSamplerAlgorithm for TrackerSamplerPF

fn as_raw_TrackerSamplerAlgorithm(&self) -> *const c_void

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

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

Computes the regions starting from a position in an image.

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

Get the name of the specific TrackerSamplerAlgorithm

impl TrackerSamplerPFTrait for TrackerSamplerPF

fn as_raw_TrackerSamplerPF(&self) -> *const c_void

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