OpenCV
4.1.0
Open Source Computer Vision
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Functions | |
void | cv::cuda::buildWarpAffineMaps (InputArray M, bool inverse, Size dsize, OutputArray xmap, OutputArray ymap, Stream &stream=Stream::Null()) |
Builds transformation maps for affine transformation. | |
void | cv::cuda::buildWarpPerspectiveMaps (InputArray M, bool inverse, Size dsize, OutputArray xmap, OutputArray ymap, Stream &stream=Stream::Null()) |
Builds transformation maps for perspective transformation. | |
void | cv::cuda::pyrDown (InputArray src, OutputArray dst, Stream &stream=Stream::Null()) |
Smoothes an image and downsamples it. | |
void | cv::cuda::pyrUp (InputArray src, OutputArray dst, Stream &stream=Stream::Null()) |
Upsamples an image and then smoothes it. | |
void | cv::cuda::remap (InputArray src, OutputArray dst, InputArray xmap, InputArray ymap, int interpolation, int borderMode=BORDER_CONSTANT, Scalar borderValue=Scalar(), Stream &stream=Stream::Null()) |
Applies a generic geometrical transformation to an image. | |
void | cv::cuda::resize (InputArray src, OutputArray dst, Size dsize, double fx=0, double fy=0, int interpolation=INTER_LINEAR, Stream &stream=Stream::Null()) |
Resizes an image. | |
void | cv::cuda::rotate (InputArray src, OutputArray dst, Size dsize, double angle, double xShift=0, double yShift=0, int interpolation=INTER_LINEAR, Stream &stream=Stream::Null()) |
Rotates an image around the origin (0,0) and then shifts it. | |
void | cv::cuda::warpAffine (InputArray src, OutputArray dst, InputArray M, Size dsize, int flags=INTER_LINEAR, int borderMode=BORDER_CONSTANT, Scalar borderValue=Scalar(), Stream &stream=Stream::Null()) |
Applies an affine transformation to an image. | |
void | cv::cuda::warpPerspective (InputArray src, OutputArray dst, InputArray M, Size dsize, int flags=INTER_LINEAR, int borderMode=BORDER_CONSTANT, Scalar borderValue=Scalar(), Stream &stream=Stream::Null()) |
Applies a perspective transformation to an image. | |
void cv::cuda::buildWarpAffineMaps | ( | InputArray | M, |
bool | inverse, | ||
Size | dsize, | ||
OutputArray | xmap, | ||
OutputArray | ymap, | ||
Stream & | stream = Stream::Null() |
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Builds transformation maps for affine transformation.
M | 2x3 transformation matrix. |
inverse | Flag specifying that M is an inverse transformation ( dst=>src ). |
dsize | Size of the destination image. |
xmap | X values with CV_32FC1 type. |
ymap | Y values with CV_32FC1 type. |
stream | Stream for the asynchronous version. |
void cv::cuda::buildWarpPerspectiveMaps | ( | InputArray | M, |
bool | inverse, | ||
Size | dsize, | ||
OutputArray | xmap, | ||
OutputArray | ymap, | ||
Stream & | stream = Stream::Null() |
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Builds transformation maps for perspective transformation.
M | 3x3 transformation matrix. |
inverse | Flag specifying that M is an inverse transformation ( dst=>src ). |
dsize | Size of the destination image. |
xmap | X values with CV_32FC1 type. |
ymap | Y values with CV_32FC1 type. |
stream | Stream for the asynchronous version. |
void cv::cuda::pyrDown | ( | InputArray | src, |
OutputArray | dst, | ||
Stream & | stream = Stream::Null() |
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void cv::cuda::pyrUp | ( | InputArray | src, |
OutputArray | dst, | ||
Stream & | stream = Stream::Null() |
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) |
Upsamples an image and then smoothes it.
src | Source image. |
dst | Destination image. Will have Size(src.cols*2, src.rows*2) size and the same type as src . |
stream | Stream for the asynchronous version. |
void cv::cuda::remap | ( | InputArray | src, |
OutputArray | dst, | ||
InputArray | xmap, | ||
InputArray | ymap, | ||
int | interpolation, | ||
int | borderMode = BORDER_CONSTANT , |
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Scalar | borderValue = Scalar() , |
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Stream & | stream = Stream::Null() |
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Applies a generic geometrical transformation to an image.
src | Source image. |
dst | Destination image with the size the same as xmap and the type the same as src . |
xmap | X values. Only CV_32FC1 type is supported. |
ymap | Y values. Only CV_32FC1 type is supported. |
interpolation | Interpolation method (see resize ). INTER_NEAREST , INTER_LINEAR and INTER_CUBIC are supported for now. |
borderMode | Pixel extrapolation method (see borderInterpolate ). BORDER_REFLECT101 , BORDER_REPLICATE , BORDER_CONSTANT , BORDER_REFLECT and BORDER_WRAP are supported for now. |
borderValue | Value used in case of a constant border. By default, it is 0. |
stream | Stream for the asynchronous version. |
The function transforms the source image using the specified map:
\texttt{dst} (x,y) = \texttt{src} (xmap(x,y), ymap(x,y))
Values of pixels with non-integer coordinates are computed using the bilinear interpolation.
void cv::cuda::resize | ( | InputArray | src, |
OutputArray | dst, | ||
Size | dsize, | ||
double | fx = 0 , |
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double | fy = 0 , |
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int | interpolation = INTER_LINEAR , |
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Stream & | stream = Stream::Null() |
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Resizes an image.
src | Source image. |
dst | Destination image with the same type as src . The size is dsize (when it is non-zero) or the size is computed from src.size() , fx , and fy . |
dsize | Destination image size. If it is zero, it is computed as: \texttt{dsize = Size(round(fx*src.cols), round(fy*src.rows))}
Either dsize or both fx and fy must be non-zero. |
fx | Scale factor along the horizontal axis. If it is zero, it is computed as: \texttt{(double)dsize.width/src.cols} |
fy | Scale factor along the vertical axis. If it is zero, it is computed as: \texttt{(double)dsize.height/src.rows} |
interpolation | Interpolation method. INTER_NEAREST , INTER_LINEAR and INTER_CUBIC are supported for now. |
stream | Stream for the asynchronous version. |
void cv::cuda::rotate | ( | InputArray | src, |
OutputArray | dst, | ||
Size | dsize, | ||
double | angle, | ||
double | xShift = 0 , |
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double | yShift = 0 , |
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int | interpolation = INTER_LINEAR , |
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Stream & | stream = Stream::Null() |
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Rotates an image around the origin (0,0) and then shifts it.
src | Source image. Supports 1, 3 or 4 channels images with CV_8U , CV_16U or CV_32F depth. |
dst | Destination image with the same type as src . The size is dsize . |
dsize | Size of the destination image. |
angle | Angle of rotation in degrees. |
xShift | Shift along the horizontal axis. |
yShift | Shift along the vertical axis. |
interpolation | Interpolation method. Only INTER_NEAREST , INTER_LINEAR , and INTER_CUBIC are supported. |
stream | Stream for the asynchronous version. |
void cv::cuda::warpAffine | ( | InputArray | src, |
OutputArray | dst, | ||
InputArray | M, | ||
Size | dsize, | ||
int | flags = INTER_LINEAR , |
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int | borderMode = BORDER_CONSTANT , |
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Scalar | borderValue = Scalar() , |
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Stream & | stream = Stream::Null() |
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Applies an affine transformation to an image.
src | Source image. CV_8U , CV_16U , CV_32S , or CV_32F depth and 1, 3, or 4 channels are supported. |
dst | Destination image with the same type as src . The size is dsize . |
M | 2x3 transformation matrix. |
dsize | Size of the destination image. |
flags | Combination of interpolation methods (see resize) and the optional flag WARP_INVERSE_MAP specifying that M is an inverse transformation ( dst=>src ). Only INTER_NEAREST , INTER_LINEAR , and INTER_CUBIC interpolation methods are supported. |
borderMode | |
borderValue | |
stream | Stream for the asynchronous version. |
void cv::cuda::warpPerspective | ( | InputArray | src, |
OutputArray | dst, | ||
InputArray | M, | ||
Size | dsize, | ||
int | flags = INTER_LINEAR , |
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int | borderMode = BORDER_CONSTANT , |
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Scalar | borderValue = Scalar() , |
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Stream & | stream = Stream::Null() |
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Applies a perspective transformation to an image.
src | Source image. CV_8U , CV_16U , CV_32S , or CV_32F depth and 1, 3, or 4 channels are supported. |
dst | Destination image with the same type as src . The size is dsize . |
M | 3x3 transformation matrix. |
dsize | Size of the destination image. |
flags | Combination of interpolation methods (see resize ) and the optional flag WARP_INVERSE_MAP specifying that M is the inverse transformation ( dst => src ). Only INTER_NEAREST , INTER_LINEAR , and INTER_CUBIC interpolation methods are supported. |
borderMode | |
borderValue | |
stream | Stream for the asynchronous version. |