updated gpu docs
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Vladislav Vinogradov
@@ -256,7 +256,7 @@ Class providing a memory buffer for :ocv:func:`gpu::convolve` function, plus it
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void create(Size image_size, Size templ_size);
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static Size estimateBlockSize(Size result_size, Size templ_size);
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};
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You can use field `user_block_size` to set specific block size for :ocv:func:`gpu::convolve` function. If you leave its default value `Size(0,0)` then automatic estimation of block size will be used (which is optimized for speed). By varying `user_block_size` you can reduce memory requirements at the cost of speed.
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gpu::ConvolveBuf::create
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@@ -283,7 +283,7 @@ Computes a convolution (or cross-correlation) of two images.
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:param ccorr: Flags to evaluate cross-correlation instead of convolution.
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:param buf: Optional buffer to avoid extra memory allocations and to adjust some specific parameters. See :ocv:class:`gpu::ConvolveBuf`.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`gpu::filter2D`
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@@ -320,9 +320,9 @@ Computes a proximity map for a raster template and an image where the template i
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:param result: Map containing comparison results ( ``CV_32FC1`` ). If ``image`` is *W x H* and ``templ`` is *w x h*, then ``result`` must be *W-w+1 x H-h+1*.
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:param method: Specifies the way to compare the template with the image.
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:param buf: Optional buffer to avoid extra memory allocations and to adjust some specific parameters. See :ocv:class:`gpu::MatchTemplateBuf`.
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:param stream: Stream for the asynchronous version.
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The following methods are supported for the ``CV_8U`` depth images for now:
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@@ -355,7 +355,7 @@ Applies a generic geometrical transformation to an image.
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:param xmap: X values. Only ``CV_32FC1`` type is supported.
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:param ymap: Y values. Only ``CV_32FC1`` type is supported.
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:param interpolation: Interpolation method (see :ocv:func:`resize` ). ``INTER_NEAREST`` , ``INTER_LINEAR`` and ``INTER_CUBIC`` are supported for now.
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:param borderMode: Pixel extrapolation method (see :ocv:func:`borderInterpolate` ). ``BORDER_REFLECT101`` , ``BORDER_REPLICATE`` , ``BORDER_CONSTANT`` , ``BORDER_REFLECT`` and ``BORDER_WRAP`` are supported for now.
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@@ -495,6 +495,28 @@ Applies an affine transformation to an image.
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gpu::buildWarpAffineMaps
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------------------------
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Builds transformation maps for affine transformation.
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.. ocv:function:: void buildWarpAffineMaps(const Mat& M, bool inverse, Size dsize, GpuMat& xmap, GpuMat& ymap, Stream& stream = Stream::Null());
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:param M: *2x3* transformation matrix.
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:param inverse: Flag specifying that ``M`` is an inverse transformation ( ``dst=>src`` ).
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:param dsize: Size of the destination image.
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:param xmap: X values with ``CV_32FC1`` type.
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:param ymap: Y values with ``CV_32FC1`` type.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`gpu::warpAffine` , :ocv:func:`gpu::remap`
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gpu::warpPerspective
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------------------------
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Applies a perspective transformation to an image.
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@@ -517,6 +539,28 @@ Applies a perspective transformation to an image.
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gpu::buildWarpPerspectiveMaps
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-----------------------------
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Builds transformation maps for perspective transformation.
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.. ocv:function:: void buildWarpAffineMaps(const Mat& M, bool inverse, Size dsize, GpuMat& xmap, GpuMat& ymap, Stream& stream = Stream::Null());
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:param M: *3x3* transformation matrix.
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:param inverse: Flag specifying that ``M`` is an inverse transformation ( ``dst=>src`` ).
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:param dsize: Size of the destination image.
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:param xmap: X values with ``CV_32FC1`` type.
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:param ymap: Y values with ``CV_32FC1`` type.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`gpu::warpPerspective` , :ocv:func:`gpu::remap`
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gpu::rotate
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---------------
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Rotates an image around the origin (0,0) and then shifts it.
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@@ -562,7 +606,7 @@ Forms a border around an image.
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:param right: Number of pixels in each direction from the source image rectangle to extrapolate. For example: ``top=1, bottom=1, left=1, right=1`` mean that 1 pixel-wide border needs to be built.
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:param borderType: Border type. See :ocv:func:`borderInterpolate` for details. ``BORDER_REFLECT101`` , ``BORDER_REPLICATE`` , ``BORDER_CONSTANT`` , ``BORDER_REFLECT`` and ``BORDER_WRAP`` are supported for now.
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:param value: Border value.
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:param stream: Stream for the asynchronous version.
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@@ -796,17 +840,17 @@ Composites two images using alpha opacity values contained in each image.
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:param alpha_op: Flag specifying the alpha-blending operation:
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* **ALPHA_OVER**
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* **ALPHA_IN**
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* **ALPHA_OUT**
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* **ALPHA_ATOP**
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* **ALPHA_XOR**
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* **ALPHA_PLUS**
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* **ALPHA_OVER_PREMUL**
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* **ALPHA_IN_PREMUL**
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* **ALPHA_OUT_PREMUL**
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* **ALPHA_ATOP_PREMUL**
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* **ALPHA_XOR_PREMUL**
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* **ALPHA_PLUS_PREMUL**
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* **ALPHA_IN**
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* **ALPHA_OUT**
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* **ALPHA_ATOP**
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* **ALPHA_XOR**
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* **ALPHA_PLUS**
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* **ALPHA_OVER_PREMUL**
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* **ALPHA_IN_PREMUL**
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* **ALPHA_OUT_PREMUL**
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* **ALPHA_ATOP_PREMUL**
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* **ALPHA_XOR_PREMUL**
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* **ALPHA_PLUS_PREMUL**
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* **ALPHA_PREMUL**
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:param stream: Stream for the asynchronous version.
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