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207 lines
6.1 KiB
ReStructuredText
207 lines
6.1 KiB
ReStructuredText
Operations on Matrices
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======================
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.. highlight:: cpp
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gpu::transpose
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------------------
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Transposes a matrix.
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.. ocv:function:: void gpu::transpose(const GpuMat& src, GpuMat& dst, Stream& stream = Stream::Null())
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:param src: Source matrix. 1-, 4-, 8-byte element sizes are supported for now (CV_8UC1, CV_8UC4, CV_16UC2, CV_32FC1, etc).
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:param dst: Destination matrix.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`transpose`
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gpu::flip
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-------------
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Flips a 2D matrix around vertical, horizontal, or both axes.
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.. ocv:function:: void gpu::flip(const GpuMat& src, GpuMat& dst, int flipCode, Stream& stream = Stream::Null())
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:param src: Source matrix. Only ``CV_8UC1`` and ``CV_8UC4`` matrices are supported for now.
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:param dst: Destination matrix.
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:param flipCode: Flip mode for the source:
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* ``0`` Flips around x-axis.
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* ``>0`` Flips around y-axis.
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* ``<0`` Flips around both axes.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`flip`
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gpu::LUT
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------------
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Transforms the source matrix into the destination matrix using the given look-up table: ``dst(I) = lut(src(I))``
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.. ocv:function:: void gpu::LUT(const GpuMat& src, const Mat& lut, GpuMat& dst, Stream& stream = Stream::Null())
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:param src: Source matrix. ``CV_8UC1`` and ``CV_8UC3`` matrices are supported for now.
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:param lut: Look-up table of 256 elements. It is a continuous ``CV_8U`` matrix.
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:param dst: Destination matrix with the same depth as ``lut`` and the same number of channels as ``src`` .
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`LUT`
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gpu::merge
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--------------
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Makes a multi-channel matrix out of several single-channel matrices.
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.. ocv:function:: void gpu::merge(const GpuMat* src, size_t n, GpuMat& dst, Stream& stream = Stream::Null())
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.. ocv:function:: void gpu::merge(const vector<GpuMat>& src, GpuMat& dst, Stream& stream = Stream::Null())
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:param src: Array/vector of source matrices.
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:param n: Number of source matrices.
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:param dst: Destination matrix.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`merge`
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gpu::split
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--------------
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Copies each plane of a multi-channel matrix into an array.
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.. ocv:function:: void gpu::split(const GpuMat& src, GpuMat* dst, Stream& stream = Stream::Null())
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.. ocv:function:: void gpu::split(const GpuMat& src, vector<GpuMat>& dst, Stream& stream = Stream::Null())
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:param src: Source matrix.
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:param dst: Destination array/vector of single-channel matrices.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`split`
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gpu::magnitude
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------------------
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Computes magnitudes of complex matrix elements.
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.. ocv:function:: void gpu::magnitude(const GpuMat& xy, GpuMat& magnitude, Stream& stream = Stream::Null())
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.. ocv:function:: void gpu::magnitude(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, Stream& stream = Stream::Null())
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:param xy: Source complex matrix in the interleaved format ( ``CV_32FC2`` ).
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:param x: Source matrix containing real components ( ``CV_32FC1`` ).
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:param y: Source matrix containing imaginary components ( ``CV_32FC1`` ).
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:param magnitude: Destination matrix of float magnitudes ( ``CV_32FC1`` ).
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`magnitude`
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gpu::magnitudeSqr
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---------------------
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Computes squared magnitudes of complex matrix elements.
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.. ocv:function:: void gpu::magnitudeSqr(const GpuMat& xy, GpuMat& magnitude, Stream& stream = Stream::Null())
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.. ocv:function:: void gpu::magnitudeSqr(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, Stream& stream = Stream::Null())
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:param xy: Source complex matrix in the interleaved format ( ``CV_32FC2`` ).
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:param x: Source matrix containing real components ( ``CV_32FC1`` ).
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:param y: Source matrix containing imaginary components ( ``CV_32FC1`` ).
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:param magnitude: Destination matrix of float magnitude squares ( ``CV_32FC1`` ).
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:param stream: Stream for the asynchronous version.
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gpu::phase
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--------------
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Computes polar angles of complex matrix elements.
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.. ocv:function:: void gpu::phase(const GpuMat& x, const GpuMat& y, GpuMat& angle, bool angleInDegrees=false, Stream& stream = Stream::Null())
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:param x: Source matrix containing real components ( ``CV_32FC1`` ).
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:param y: Source matrix containing imaginary components ( ``CV_32FC1`` ).
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:param angle: Destionation matrix of angles ( ``CV_32FC1`` ).
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:param angleInDegress: Flag for angles that must be evaluated in degress.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`phase`
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gpu::cartToPolar
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--------------------
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Converts Cartesian coordinates into polar.
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.. ocv:function:: void gpu::cartToPolar(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, GpuMat& angle, bool angleInDegrees=false, Stream& stream = Stream::Null())
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:param x: Source matrix containing real components ( ``CV_32FC1`` ).
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:param y: Source matrix containing imaginary components ( ``CV_32FC1`` ).
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:param magnitude: Destination matrix of float magnitudes ( ``CV_32FC1`` ).
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:param angle: Destionation matrix of angles ( ``CV_32FC1`` ).
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:param angleInDegress: Flag for angles that must be evaluated in degress.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`cartToPolar`
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gpu::polarToCart
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--------------------
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Converts polar coordinates into Cartesian.
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.. ocv:function:: void gpu::polarToCart(const GpuMat& magnitude, const GpuMat& angle, GpuMat& x, GpuMat& y, bool angleInDegrees=false, Stream& stream = Stream::Null())
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:param magnitude: Source matrix containing magnitudes ( ``CV_32FC1`` ).
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:param angle: Source matrix containing angles ( ``CV_32FC1`` ).
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:param x: Destination matrix of real components ( ``CV_32FC1`` ).
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:param y: Destination matrix of imaginary components ( ``CV_32FC1`` ).
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:param angleInDegress: Flag that indicates angles in degress.
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:param stream: Stream for the asynchronous version.
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.. seealso:: :ocv:func:`polarToCart`
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