227 lines
6.7 KiB
ReStructuredText
227 lines
6.7 KiB
ReStructuredText
Operations on Matrices
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======================
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.. highlight:: cpp
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.. index:: gpu::transpose
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gpu::transpose
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------------------
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.. cpp:function:: void gpu::transpose(const GpuMat& src, GpuMat& dst)
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Transposes a matrix.
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:param src: Source matrix. 1, 4, 8 bytes element sizes are supported for now.
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:param dst: Destination matrix.
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See Also:
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:c:func:`transpose` .
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.. index:: gpu::flip
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gpu::flip
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-------------
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.. cpp:function:: void gpu::flip(const GpuMat& src, GpuMat& dst, int flipCode)
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Flips a 2D matrix around vertical, horizontal, or both axes.
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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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See Also:
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:c:func:`flip` .
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.. index:: gpu::LUT
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gpu::LUT
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------------
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.. cpp:function:: void gpu::LUT(const GpuMat& src, const Mat& lut, GpuMat& dst)
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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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: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. Must be 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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See Also: :c:func:`LUT` .
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.. index:: gpu::merge
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gpu::merge
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--------------
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.. cpp:function:: void gpu::merge(const GpuMat* src, size_t n, GpuMat& dst)
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.. cpp:function:: void gpu::merge(const GpuMat* src, size_t n, GpuMat& dst, const Stream& stream)
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.. cpp:function:: void gpu::merge(const vector<GpuMat>& src, GpuMat& dst)
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.. cpp:function:: void gpu::merge(const vector<GpuMat>& src, GpuMat& dst, const Stream& stream)
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Makes a multi-channel matrix out of several single-channel matrices.
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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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See Also: :c:func:`merge` .
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.. index:: gpu::split
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gpu::split
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--------------
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.. cpp:function:: void gpu::split(const GpuMat& src, GpuMat* dst)
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.. cpp:function:: void gpu::split(const GpuMat& src, GpuMat* dst, const Stream& stream)
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.. cpp:function:: void gpu::split(const GpuMat& src, vector<GpuMat>& dst)
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.. cpp:function:: void gpu::split(const GpuMat& src, vector<GpuMat>& dst, const Stream& stream)
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Copies each plane of a multi-channel matrix into an array.
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:param src: Source matrix.
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:param dst: The destination array/vector of single-channel matrices.
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:param stream: Stream for the asynchronous version.
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See Also: :c:func:`split`.
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.. index:: gpu::magnitude
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gpu::magnitude
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------------------
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.. cpp:function:: void gpu::magnitude(const GpuMat& xy, GpuMat& magnitude)
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.. cpp:function:: void gpu::magnitude(const GpuMat& x, const GpuMat& y, GpuMat& magnitude)
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.. cpp:function:: void gpu::magnitude(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, const Stream& stream)
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Computes magnitudes of complex matrix elements.
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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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See Also:
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:c:func:`magnitude` .
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.. index:: gpu::magnitudeSqr
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gpu::magnitudeSqr
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---------------------
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.. cpp:function:: void gpu::magnitudeSqr(const GpuMat& xy, GpuMat& magnitude)
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.. cpp:function:: void gpu::magnitudeSqr(const GpuMat& x, const GpuMat& y, GpuMat& magnitude)
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.. cpp:function:: void gpu::magnitudeSqr(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, const Stream& stream)
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Computes squared magnitudes of complex matrix elements.
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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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.. index:: gpu::phase
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gpu::phase
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--------------
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.. cpp:function:: void gpu::phase(const GpuMat& x, const GpuMat& y, GpuMat& angle, bool angleInDegrees=false)
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.. cpp:function:: void gpu::phase(const GpuMat& x, const GpuMat& y, GpuMat& angle, bool angleInDegrees, const Stream& stream)
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Computes polar angles of complex matrix elements.
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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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See Also:
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:c:func:`phase` .
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.. index:: gpu::cartToPolar
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gpu::cartToPolar
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--------------------
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.. cpp:function:: void gpu::cartToPolar(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, GpuMat& angle, bool angleInDegrees=false)
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.. cpp:function:: void gpu::cartToPolar(const GpuMat& x, const GpuMat& y, GpuMat& magnitude, GpuMat& angle, bool angleInDegrees, const Stream& stream)
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Converts Cartesian coordinates into polar.
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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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See Also:
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:c:func:`cartToPolar` .
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.. index:: gpu::polarToCart
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gpu::polarToCart
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--------------------
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.. cpp:function:: void gpu::polarToCart(const GpuMat& magnitude, const GpuMat& angle, GpuMat& x, GpuMat& y, bool angleInDegrees=false)
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.. cpp:function:: void gpu::polarToCart(const GpuMat& magnitude, const GpuMat& angle, GpuMat& x, GpuMat& y, bool angleInDegrees, const Stream& stream)
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Converts polar coordinates into Cartesian.
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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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See Also:
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:c:func:`polarToCart` .
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