OpenCV  4.2.0-dev
Open Source Computer Vision
Enumerations | Functions

Enumerations

enum  cv::cuda::AlphaCompTypes {
  cv::cuda::ALPHA_OVER,
  cv::cuda::ALPHA_IN,
  cv::cuda::ALPHA_OUT,
  cv::cuda::ALPHA_ATOP,
  cv::cuda::ALPHA_XOR,
  cv::cuda::ALPHA_PLUS,
  cv::cuda::ALPHA_OVER_PREMUL,
  cv::cuda::ALPHA_IN_PREMUL,
  cv::cuda::ALPHA_OUT_PREMUL,
  cv::cuda::ALPHA_ATOP_PREMUL,
  cv::cuda::ALPHA_XOR_PREMUL,
  cv::cuda::ALPHA_PLUS_PREMUL,
  cv::cuda::ALPHA_PREMUL
}
 
enum  cv::cuda::DemosaicTypes {
  cv::cuda::COLOR_BayerBG2BGR_MHT = 256,
  cv::cuda::COLOR_BayerGB2BGR_MHT = 257,
  cv::cuda::COLOR_BayerRG2BGR_MHT = 258,
  cv::cuda::COLOR_BayerGR2BGR_MHT = 259,
  cv::cuda::COLOR_BayerBG2RGB_MHT = COLOR_BayerRG2BGR_MHT,
  cv::cuda::COLOR_BayerGB2RGB_MHT = COLOR_BayerGR2BGR_MHT,
  cv::cuda::COLOR_BayerRG2RGB_MHT = COLOR_BayerBG2BGR_MHT,
  cv::cuda::COLOR_BayerGR2RGB_MHT = COLOR_BayerGB2BGR_MHT,
  cv::cuda::COLOR_BayerBG2GRAY_MHT = 260,
  cv::cuda::COLOR_BayerGB2GRAY_MHT = 261,
  cv::cuda::COLOR_BayerRG2GRAY_MHT = 262,
  cv::cuda::COLOR_BayerGR2GRAY_MHT = 263
}
 

Functions

void cv::cuda::alphaComp (InputArray img1, InputArray img2, OutputArray dst, int alpha_op, Stream &stream=Stream::Null())
 Composites two images using alpha opacity values contained in each image. More...
 
void cv::cuda::cvtColor (InputArray src, OutputArray dst, int code, int dcn=0, Stream &stream=Stream::Null())
 Converts an image from one color space to another. More...
 
void cv::cuda::demosaicing (InputArray src, OutputArray dst, int code, int dcn=-1, Stream &stream=Stream::Null())
 Converts an image from Bayer pattern to RGB or grayscale. More...
 
void cv::cuda::gammaCorrection (InputArray src, OutputArray dst, bool forward=true, Stream &stream=Stream::Null())
 Routines for correcting image color gamma. More...
 
void cv::cuda::swapChannels (InputOutputArray image, const int dstOrder[4], Stream &stream=Stream::Null())
 Exchanges the color channels of an image in-place. More...
 

Detailed Description

Enumeration Type Documentation

◆ AlphaCompTypes

#include <opencv2/cudaimgproc.hpp>

Enumerator
ALPHA_OVER 
ALPHA_IN 
ALPHA_OUT 
ALPHA_ATOP 
ALPHA_XOR 
ALPHA_PLUS 
ALPHA_OVER_PREMUL 
ALPHA_IN_PREMUL 
ALPHA_OUT_PREMUL 
ALPHA_ATOP_PREMUL 
ALPHA_XOR_PREMUL 
ALPHA_PLUS_PREMUL 
ALPHA_PREMUL 

◆ DemosaicTypes

#include <opencv2/cudaimgproc.hpp>

Enumerator
COLOR_BayerBG2BGR_MHT 

Bayer Demosaicing (Malvar, He, and Cutler)

COLOR_BayerGB2BGR_MHT 
COLOR_BayerRG2BGR_MHT 
COLOR_BayerGR2BGR_MHT 
COLOR_BayerBG2RGB_MHT 
COLOR_BayerGB2RGB_MHT 
COLOR_BayerRG2RGB_MHT 
COLOR_BayerGR2RGB_MHT 
COLOR_BayerBG2GRAY_MHT 
COLOR_BayerGB2GRAY_MHT 
COLOR_BayerRG2GRAY_MHT 
COLOR_BayerGR2GRAY_MHT 

Function Documentation

◆ alphaComp()

void cv::cuda::alphaComp ( InputArray  img1,
InputArray  img2,
OutputArray  dst,
int  alpha_op,
Stream stream = Stream::Null() 
)

#include <opencv2/cudaimgproc.hpp>

Composites two images using alpha opacity values contained in each image.

Parameters
img1First image. Supports CV_8UC4 , CV_16UC4 , CV_32SC4 and CV_32FC4 types.
img2Second image. Must have the same size and the same type as img1 .
dstDestination image.
alpha_opFlag specifying the alpha-blending operation:
  • ALPHA_OVER
  • ALPHA_IN
  • ALPHA_OUT
  • ALPHA_ATOP
  • ALPHA_XOR
  • ALPHA_PLUS
  • ALPHA_OVER_PREMUL
  • ALPHA_IN_PREMUL
  • ALPHA_OUT_PREMUL
  • ALPHA_ATOP_PREMUL
  • ALPHA_XOR_PREMUL
  • ALPHA_PLUS_PREMUL
  • ALPHA_PREMUL
streamStream for the asynchronous version.
Note
  • An example demonstrating the use of alphaComp can be found at opencv_source_code/samples/gpu/alpha_comp.cpp

◆ cvtColor()

void cv::cuda::cvtColor ( InputArray  src,
OutputArray  dst,
int  code,
int  dcn = 0,
Stream stream = Stream::Null() 
)

#include <opencv2/cudaimgproc.hpp>

Converts an image from one color space to another.

Parameters
srcSource image with CV_8U , CV_16U , or CV_32F depth and 1, 3, or 4 channels.
dstDestination image.
codeColor space conversion code. For details, see cvtColor .
dcnNumber of channels in the destination image. If the parameter is 0, the number of the channels is derived automatically from src and the code .
streamStream for the asynchronous version.

3-channel color spaces (like HSV, XYZ, and so on) can be stored in a 4-channel image for better performance.

See also
cvtColor

◆ demosaicing()

void cv::cuda::demosaicing ( InputArray  src,
OutputArray  dst,
int  code,
int  dcn = -1,
Stream stream = Stream::Null() 
)

#include <opencv2/cudaimgproc.hpp>

Converts an image from Bayer pattern to RGB or grayscale.

Parameters
srcSource image (8-bit or 16-bit single channel).
dstDestination image.
codeColor space conversion code (see the description below).
dcnNumber of channels in the destination image. If the parameter is 0, the number of the channels is derived automatically from src and the code .
streamStream for the asynchronous version.

The function can do the following transformations:

  • Demosaicing using bilinear interpolation

    > - COLOR_BayerBG2GRAY , COLOR_BayerGB2GRAY , COLOR_BayerRG2GRAY , COLOR_BayerGR2GRAY > - COLOR_BayerBG2BGR , COLOR_BayerGB2BGR , COLOR_BayerRG2BGR , COLOR_BayerGR2BGR

  • Demosaicing using Malvar-He-Cutler algorithm ([84])

    > - COLOR_BayerBG2GRAY_MHT , COLOR_BayerGB2GRAY_MHT , COLOR_BayerRG2GRAY_MHT , > COLOR_BayerGR2GRAY_MHT > - COLOR_BayerBG2BGR_MHT , COLOR_BayerGB2BGR_MHT , COLOR_BayerRG2BGR_MHT , > COLOR_BayerGR2BGR_MHT

See also
cvtColor

◆ gammaCorrection()

void cv::cuda::gammaCorrection ( InputArray  src,
OutputArray  dst,
bool  forward = true,
Stream stream = Stream::Null() 
)

#include <opencv2/cudaimgproc.hpp>

Routines for correcting image color gamma.

Parameters
srcSource image (3- or 4-channel 8 bit).
dstDestination image.
forwardtrue for forward gamma correction or false for inverse gamma correction.
streamStream for the asynchronous version.

◆ swapChannels()

void cv::cuda::swapChannels ( InputOutputArray  image,
const int  dstOrder[4],
Stream stream = Stream::Null() 
)

#include <opencv2/cudaimgproc.hpp>

Exchanges the color channels of an image in-place.

Parameters
imageSource image. Supports only CV_8UC4 type.
dstOrderInteger array describing how channel values are permutated. The n-th entry of the array contains the number of the channel that is stored in the n-th channel of the output image. E.g. Given an RGBA image, aDstOrder = [3,2,1,0] converts this to ABGR channel order.
streamStream for the asynchronous version.

The methods support arbitrary permutations of the original channels, including replication.