Point Cloud Library (PCL)  1.9.1-dev
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pcl::io::MedianBuffer< T > Class Template Reference

A buffer that computes running window median of the data inserted. More...

#include <pcl/io/buffers.h>

+ Inheritance diagram for pcl::io::MedianBuffer< T >:

Public Member Functions

 MedianBuffer (size_t size, unsigned char window_size)
 Construct a buffer of given size with given running window size. More...
 
virtual ~MedianBuffer ()
 
virtual T operator[] (size_t idx) const
 Access an element at a given index. More...
 
virtual void push (std::vector< T > &data)
 Insert a new chunk of data into the buffer. More...
 
- Public Member Functions inherited from pcl::io::Buffer< T >
virtual ~Buffer ()
 
size_t size () const
 Get the size of the buffer. More...
 

Additional Inherited Members

- Public Types inherited from pcl::io::Buffer< T >
typedef T value_type
 
- Protected Member Functions inherited from pcl::io::Buffer< T >
 Buffer (size_t size)
 
- Protected Attributes inherited from pcl::io::Buffer< T >
const size_t size_
 

Detailed Description

template<typename T>
class pcl::io::MedianBuffer< T >

A buffer that computes running window median of the data inserted.

The buffer and window sizes are specified at construction time. The buffer size defines the number of elements in each data chunk that is inserted in the buffer. The window size is the number of last data chunks that are considered for median computation. The median is computed separately for 1st, 2nd, etc. element in data chunks.

The data can contain invalid elements. For integral types zeros are assumed to be invalid elements, whereas for floating-point types it is quiet NaN. Invalid elements are ignored when computing median.

The buffer is thread-safe.

Definition at line 147 of file buffers.h.

Constructor & Destructor Documentation

template<typename T >
pcl::io::MedianBuffer< T >::MedianBuffer ( size_t  size,
unsigned char  window_size 
)

Construct a buffer of given size with given running window size.

Parameters
[in]sizebuffer size
[in]window_sizerunning window size over which the median value should be computed (0..255)

Definition at line 107 of file buffers.hpp.

References pcl::io::Buffer< T >::size_.

template<typename T >
pcl::io::MedianBuffer< T >::~MedianBuffer ( )
virtual

Definition at line 133 of file buffers.hpp.

Member Function Documentation

template<typename T >
T pcl::io::MedianBuffer< T >::operator[] ( size_t  idx) const
virtual

Access an element at a given index.

This operation is constant time.

Implements pcl::io::Buffer< T >.

Definition at line 138 of file buffers.hpp.

References pcl::io::Buffer< T >::size_.

template<typename T >
void pcl::io::MedianBuffer< T >::push ( std::vector< T > &  data)
virtual

Insert a new chunk of data into the buffer.

This operation is linear in buffer size and window size.

Parameters
[in]datainput data chunk, the memory will be "stolen"

Implements pcl::io::Buffer< T >.

Definition at line 146 of file buffers.hpp.

References buffer_traits< T >::is_invalid(), and pcl::io::Buffer< T >::size_.


The documentation for this class was generated from the following files: