OpenCV  3.0.0
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cv::_OutputArray Class Reference

This type is very similar to InputArray except that it is used for input/output and output function parameters. More...

#include "mat.hpp"

Inheritance diagram for cv::_OutputArray:
cv::_InputArray cv::_InputOutputArray

Public Types

enum  {
  DEPTH_MASK_8U = 1 << CV_8U,
  DEPTH_MASK_8S = 1 << CV_8S,
  DEPTH_MASK_16U = 1 << CV_16U,
  DEPTH_MASK_16S = 1 << CV_16S,
  DEPTH_MASK_32S = 1 << CV_32S,
  DEPTH_MASK_32F = 1 << CV_32F,
  DEPTH_MASK_64F = 1 << CV_64F,
  DEPTH_MASK_ALL = (DEPTH_MASK_64F<<1)-1,
  DEPTH_MASK_ALL_BUT_8S = DEPTH_MASK_ALL & ~DEPTH_MASK_8S,
  DEPTH_MASK_FLT = DEPTH_MASK_32F + DEPTH_MASK_64F
}
 
- Public Types inherited from cv::_InputArray
enum  {
  KIND_SHIFT = 16,
  FIXED_TYPE = 0x8000 << KIND_SHIFT,
  FIXED_SIZE = 0x4000 << KIND_SHIFT,
  KIND_MASK = 31 << KIND_SHIFT,
  NONE = 0 << KIND_SHIFT,
  MAT = 1 << KIND_SHIFT,
  MATX = 2 << KIND_SHIFT,
  STD_VECTOR = 3 << KIND_SHIFT,
  STD_VECTOR_VECTOR = 4 << KIND_SHIFT,
  STD_VECTOR_MAT = 5 << KIND_SHIFT,
  EXPR = 6 << KIND_SHIFT,
  OPENGL_BUFFER = 7 << KIND_SHIFT,
  CUDA_HOST_MEM = 8 << KIND_SHIFT,
  CUDA_GPU_MAT = 9 << KIND_SHIFT,
  UMAT =10 << KIND_SHIFT,
  STD_VECTOR_UMAT =11 << KIND_SHIFT,
  STD_BOOL_VECTOR =12 << KIND_SHIFT
}
 

Public Member Functions

 _OutputArray ()
 
 _OutputArray (int _flags, void *_obj)
 
 _OutputArray (Mat &m)
 
 _OutputArray (std::vector< Mat > &vec)
 
 _OutputArray (cuda::GpuMat &d_mat)
 
 _OutputArray (ogl::Buffer &buf)
 
 _OutputArray (cuda::HostMem &cuda_mem)
 
template<typename _Tp >
 _OutputArray (cudev::GpuMat_< _Tp > &m)
 
template<typename _Tp >
 _OutputArray (std::vector< _Tp > &vec)
 
 _OutputArray (std::vector< bool > &vec)
 
template<typename _Tp >
 _OutputArray (std::vector< std::vector< _Tp > > &vec)
 
template<typename _Tp >
 _OutputArray (std::vector< Mat_< _Tp > > &vec)
 
template<typename _Tp >
 _OutputArray (Mat_< _Tp > &m)
 
template<typename _Tp >
 _OutputArray (_Tp *vec, int n)
 
template<typename _Tp , int m, int n>
 _OutputArray (Matx< _Tp, m, n > &matx)
 
 _OutputArray (UMat &m)
 
 _OutputArray (std::vector< UMat > &vec)
 
 _OutputArray (const Mat &m)
 
 _OutputArray (const std::vector< Mat > &vec)
 
 _OutputArray (const cuda::GpuMat &d_mat)
 
 _OutputArray (const ogl::Buffer &buf)
 
 _OutputArray (const cuda::HostMem &cuda_mem)
 
template<typename _Tp >
 _OutputArray (const cudev::GpuMat_< _Tp > &m)
 
template<typename _Tp >
 _OutputArray (const std::vector< _Tp > &vec)
 
template<typename _Tp >
 _OutputArray (const std::vector< std::vector< _Tp > > &vec)
 
template<typename _Tp >
 _OutputArray (const std::vector< Mat_< _Tp > > &vec)
 
template<typename _Tp >
 _OutputArray (const Mat_< _Tp > &m)
 
template<typename _Tp >
 _OutputArray (const _Tp *vec, int n)
 
template<typename _Tp , int m, int n>
 _OutputArray (const Matx< _Tp, m, n > &matx)
 
 _OutputArray (const UMat &m)
 
 _OutputArray (const std::vector< UMat > &vec)
 
void assign (const UMat &u) const
 
void assign (const Mat &m) const
 
void clear () const
 
void create (Size sz, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const
 
void create (int rows, int cols, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const
 
void create (int dims, const int *size, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const
 
void createSameSize (const _InputArray &arr, int mtype) const
 
bool fixedSize () const
 
bool fixedType () const
 
cuda::GpuMatgetGpuMatRef () const
 
cuda::HostMemgetHostMemRef () const
 
MatgetMatRef (int i=-1) const
 
ogl::BuffergetOGlBufferRef () const
 
UMatgetUMatRef (int i=-1) const
 
bool needed () const
 
void release () const
 
void setTo (const _InputArray &value, const _InputArray &mask=_InputArray()) const
 
- Public Member Functions inherited from cv::_InputArray
 _InputArray ()
 
 _InputArray (int _flags, void *_obj)
 
 _InputArray (const Mat &m)
 
 _InputArray (const MatExpr &expr)
 
 _InputArray (const std::vector< Mat > &vec)
 
template<typename _Tp >
 _InputArray (const Mat_< _Tp > &m)
 
template<typename _Tp >
 _InputArray (const std::vector< _Tp > &vec)
 
 _InputArray (const std::vector< bool > &vec)
 
template<typename _Tp >
 _InputArray (const std::vector< std::vector< _Tp > > &vec)
 
template<typename _Tp >
 _InputArray (const std::vector< Mat_< _Tp > > &vec)
 
template<typename _Tp >
 _InputArray (const _Tp *vec, int n)
 
template<typename _Tp , int m, int n>
 _InputArray (const Matx< _Tp, m, n > &matx)
 
 _InputArray (const double &val)
 
 _InputArray (const cuda::GpuMat &d_mat)
 
 _InputArray (const ogl::Buffer &buf)
 
 _InputArray (const cuda::HostMem &cuda_mem)
 
template<typename _Tp >
 _InputArray (const cudev::GpuMat_< _Tp > &m)
 
 _InputArray (const UMat &um)
 
 _InputArray (const std::vector< UMat > &umv)
 
 ~_InputArray ()
 
int channels (int i=-1) const
 
int cols (int i=-1) const
 
void copyTo (const _OutputArray &arr) const
 
void copyTo (const _OutputArray &arr, const _InputArray &mask) const
 
int depth (int i=-1) const
 
int dims (int i=-1) const
 
bool empty () const
 
int getFlags () const
 
cuda::GpuMat getGpuMat () const
 
Mat getMat (int idx=-1) const
 
Mat getMat_ (int idx=-1) const
 
void getMatVector (std::vector< Mat > &mv) const
 
void * getObj () const
 
ogl::Buffer getOGlBuffer () const
 
Size getSz () const
 
UMat getUMat (int idx=-1) const
 
void getUMatVector (std::vector< UMat > &umv) const
 
bool isContinuous (int i=-1) const
 
bool isMat () const
 
bool isMatVector () const
 
bool isMatx () const
 
bool isSubmatrix (int i=-1) const
 
bool isUMat () const
 
bool isUMatVector () const
 
int kind () const
 
size_t offset (int i=-1) const
 
int rows (int i=-1) const
 
bool sameSize (const _InputArray &arr) const
 
Size size (int i=-1) const
 
int sizend (int *sz, int i=-1) const
 
size_t step (int i=-1) const
 
size_t total (int i=-1) const
 
int type (int i=-1) const
 

Additional Inherited Members

- Protected Member Functions inherited from cv::_InputArray
void init (int _flags, const void *_obj)
 
void init (int _flags, const void *_obj, Size _sz)
 
- Protected Attributes inherited from cv::_InputArray
int flags
 
void * obj
 
Size sz
 

Detailed Description

This type is very similar to InputArray except that it is used for input/output and output function parameters.

Just like with InputArray, OpenCV users should not care about OutputArray, they just pass Mat, vector<T> etc. to the functions. The same limitation as for InputArray: Do not explicitly create OutputArray instances applies here too.

If you want to make your function polymorphic (i.e. accept different arrays as output parameters), it is also not very difficult. Take the sample above as the reference. Note that _OutputArray::create() needs to be called before _OutputArray::getMat(). This way you guarantee that the output array is properly allocated.

Optional output parameters. If you do not need certain output array to be computed and returned to you, pass cv::noArray(), just like you would in the case of optional input array. At the implementation level, use _OutputArray::needed() to check if certain output array needs to be computed or not.

There are several synonyms for OutputArray that are used to assist automatic Python/Java/... wrapper generators:

Member Enumeration Documentation

anonymous enum
Enumerator
DEPTH_MASK_8U 
DEPTH_MASK_8S 
DEPTH_MASK_16U 
DEPTH_MASK_16S 
DEPTH_MASK_32S 
DEPTH_MASK_32F 
DEPTH_MASK_64F 
DEPTH_MASK_ALL 
DEPTH_MASK_ALL_BUT_8S 
DEPTH_MASK_FLT 

Constructor & Destructor Documentation

cv::_OutputArray::_OutputArray ( )
cv::_OutputArray::_OutputArray ( int  _flags,
void *  _obj 
)
cv::_OutputArray::_OutputArray ( Mat m)
cv::_OutputArray::_OutputArray ( std::vector< Mat > &  vec)
cv::_OutputArray::_OutputArray ( cuda::GpuMat d_mat)
cv::_OutputArray::_OutputArray ( ogl::Buffer buf)
cv::_OutputArray::_OutputArray ( cuda::HostMem cuda_mem)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( cudev::GpuMat_< _Tp > &  m)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( std::vector< _Tp > &  vec)
cv::_OutputArray::_OutputArray ( std::vector< bool > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( std::vector< std::vector< _Tp > > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( std::vector< Mat_< _Tp > > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( Mat_< _Tp > &  m)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( _Tp *  vec,
int  n 
)
template<typename _Tp , int m, int n>
cv::_OutputArray::_OutputArray ( Matx< _Tp, m, n > &  matx)
cv::_OutputArray::_OutputArray ( UMat m)
cv::_OutputArray::_OutputArray ( std::vector< UMat > &  vec)
cv::_OutputArray::_OutputArray ( const Mat m)
cv::_OutputArray::_OutputArray ( const std::vector< Mat > &  vec)
cv::_OutputArray::_OutputArray ( const cuda::GpuMat d_mat)
cv::_OutputArray::_OutputArray ( const ogl::Buffer buf)
cv::_OutputArray::_OutputArray ( const cuda::HostMem cuda_mem)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const cudev::GpuMat_< _Tp > &  m)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const std::vector< _Tp > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const std::vector< std::vector< _Tp > > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const std::vector< Mat_< _Tp > > &  vec)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const Mat_< _Tp > &  m)
template<typename _Tp >
cv::_OutputArray::_OutputArray ( const _Tp *  vec,
int  n 
)
template<typename _Tp , int m, int n>
cv::_OutputArray::_OutputArray ( const Matx< _Tp, m, n > &  matx)
cv::_OutputArray::_OutputArray ( const UMat m)
cv::_OutputArray::_OutputArray ( const std::vector< UMat > &  vec)

Member Function Documentation

void cv::_OutputArray::assign ( const UMat u) const
void cv::_OutputArray::assign ( const Mat m) const
void cv::_OutputArray::clear ( ) const
void cv::_OutputArray::create ( Size  sz,
int  type,
int  i = -1,
bool  allowTransposed = false,
int  fixedDepthMask = 0 
) const
void cv::_OutputArray::create ( int  rows,
int  cols,
int  type,
int  i = -1,
bool  allowTransposed = false,
int  fixedDepthMask = 0 
) const
void cv::_OutputArray::create ( int  dims,
const int *  size,
int  type,
int  i = -1,
bool  allowTransposed = false,
int  fixedDepthMask = 0 
) const
void cv::_OutputArray::createSameSize ( const _InputArray arr,
int  mtype 
) const
bool cv::_OutputArray::fixedSize ( ) const
bool cv::_OutputArray::fixedType ( ) const
cuda::GpuMat& cv::_OutputArray::getGpuMatRef ( ) const
cuda::HostMem& cv::_OutputArray::getHostMemRef ( ) const
Mat& cv::_OutputArray::getMatRef ( int  i = -1) const
ogl::Buffer& cv::_OutputArray::getOGlBufferRef ( ) const
UMat& cv::_OutputArray::getUMatRef ( int  i = -1) const
bool cv::_OutputArray::needed ( ) const
void cv::_OutputArray::release ( ) const
void cv::_OutputArray::setTo ( const _InputArray value,
const _InputArray mask = _InputArray() 
) const

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