mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
314 lines
12 KiB
314 lines
12 KiB
Image Processing |
|
============================= |
|
|
|
.. highlight:: cpp |
|
|
|
ocl::meanShiftFiltering |
|
--------------------------- |
|
Performs mean-shift filtering for each point of the source image. |
|
|
|
.. ocv:function:: void ocl::meanShiftFiltering(const oclMat &src, oclMat &dst, int sp, int sr, TermCriteria criteria = TermCriteria(TermCriteria::MAX_ITER + TermCriteria::EPS, 5, 1)) |
|
|
|
:param src: Source image. Only ``CV_8UC4`` images are supported for now. |
|
|
|
:param dst: Destination image containing the color of mapped points. It has the same size and type as ``src`` . |
|
|
|
:param sp: Spatial window radius. |
|
|
|
:param sr: Color window radius. |
|
|
|
:param criteria: Termination criteria. See :ocv:class:`TermCriteria`. |
|
|
|
It maps each point of the source image into another point. As a result, you have a new color and new position of each point. |
|
|
|
|
|
ocl::meanShiftProc |
|
---------------------- |
|
Performs a mean-shift procedure and stores information about processed points (their colors and positions) in two images. |
|
|
|
.. ocv:function:: void ocl::meanShiftProc(const oclMat &src, oclMat &dstr, oclMat &dstsp, int sp, int sr, TermCriteria criteria = TermCriteria(TermCriteria::MAX_ITER + TermCriteria::EPS, 5, 1)) |
|
|
|
:param src: Source image. Only ``CV_8UC4`` images are supported for now. |
|
|
|
:param dstr: Destination image containing the color of mapped points. The size and type is the same as ``src`` . |
|
|
|
:param dstsp: Destination image containing the position of mapped points. The size is the same as ``src`` size. The type is ``CV_16SC2`` . |
|
|
|
:param sp: Spatial window radius. |
|
|
|
:param sr: Color window radius. |
|
|
|
:param criteria: Termination criteria. See :ocv:class:`TermCriteria`. |
|
|
|
.. seealso:: :ocv:func:`ocl::meanShiftFiltering` |
|
|
|
|
|
ocl::meanShiftSegmentation |
|
------------------------------ |
|
Performs a mean-shift segmentation of the source image and eliminates small segments. |
|
|
|
.. ocv:function:: void ocl::meanShiftSegmentation(const oclMat &src, Mat &dst, int sp, int sr, int minsize, TermCriteria criteria = TermCriteria(TermCriteria::MAX_ITER + TermCriteria::EPS, 5, 1)) |
|
|
|
:param src: Source image. Only ``CV_8UC4`` images are supported for now. |
|
|
|
:param dst: Segmented image with the same size and type as ``src`` . |
|
|
|
:param sp: Spatial window radius. |
|
|
|
:param sr: Color window radius. |
|
|
|
:param minsize: Minimum segment size. Smaller segments are merged. |
|
|
|
:param criteria: Termination criteria. See :ocv:class:`TermCriteria`. |
|
|
|
ocl::integral |
|
----------------- |
|
Computes an integral image. |
|
|
|
.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum, oclMat &sqsum) |
|
|
|
.. ocv:function:: void ocl::integral(const oclMat &src, oclMat &sum) |
|
|
|
:param src: Source image. Only ``CV_8UC1`` images are supported for now. |
|
|
|
:param sum: Integral image containing 32-bit unsigned integer values packed into ``CV_32SC1`` . |
|
|
|
:param sqsum: Sqsum values is ``CV_32FC1`` type. |
|
|
|
.. seealso:: :ocv:func:`integral` |
|
|
|
ocl::cornerHarris |
|
--------------------- |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::cornerHarris(const oclMat &src, oclMat &dst, int blockSize, int ksize, double k, int bordertype = cv::BORDER_DEFAULT) |
|
|
|
:param src: Source image. Only CV_8UC1 and CV_32FC1 images are supported now. |
|
|
|
:param dst: Destination image containing cornerness values. It has the same size as src and CV_32FC1 type. |
|
|
|
:param blockSize: Neighborhood size |
|
|
|
:param ksize: Aperture parameter for the Sobel operator |
|
|
|
:param k: Harris detector free parameter |
|
|
|
:param bordertype: Pixel extrapolation method. Only BORDER_REFLECT101, BORDER_REFLECT, BORDER_CONSTANT and BORDER_REPLICATE are supported now. |
|
|
|
Calculate Harris corner. |
|
|
|
ocl::cornerMinEigenVal |
|
-------------------------- |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::cornerMinEigenVal(const oclMat &src, oclMat &dst, int blockSize, int ksize, int bordertype = cv::BORDER_DEFAULT) |
|
|
|
:param src: Source image. Only CV_8UC1 and CV_32FC1 images are supported now. |
|
|
|
:param dst: Destination image containing cornerness values. It has the same size as src and CV_32FC1 type. |
|
|
|
:param blockSize: Neighborhood size |
|
|
|
:param ksize: Aperture parameter for the Sobel operator |
|
|
|
:param bordertype: Pixel extrapolation method. Only BORDER_REFLECT101, BORDER_REFLECT, BORDER_CONSTANT and BORDER_REPLICATE are supported now. |
|
|
|
Calculate MinEigenVal. |
|
|
|
ocl::calcHist |
|
------------------ |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::calcHist(const oclMat &mat_src, oclMat &mat_hist) |
|
|
|
:param src: Source arrays. They all should have the same depth, CV 8U, and the same size. Each of them can have an arbitrary number of channels. |
|
|
|
:param dst: The output histogram, a dense or sparse dims-dimensional |
|
|
|
Calculates histogram of one or more arrays. Supports only 8UC1 data type. |
|
|
|
ocl::equalizeHist |
|
--------------------- |
|
Equalizes the histogram of a grayscale image. |
|
|
|
.. ocv:function:: void ocl::equalizeHist(const oclMat &mat_src, oclMat &mat_dst) |
|
|
|
:param mat_src: Source image. |
|
|
|
:param mat_dst: Destination image. |
|
|
|
.. seealso:: :ocv:func:`equalizeHist` |
|
|
|
|
|
ocl::remap |
|
------------------ |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::remap(const oclMat &src, oclMat &dst, oclMat &map1, oclMat &map2, int interpolation, int bordertype, const Scalar &value = Scalar()) |
|
|
|
:param src: Source image. Only CV_8UC1 and CV_32FC1 images are supported now. |
|
|
|
:param dst: Destination image containing cornerness values. It has the same size as src and CV_32FC1 type. |
|
|
|
:param map1: The first map of either (x,y) points or just x values having the type CV_16SC2 , CV_32FC1 , or CV_32FC2 . See covertMaps() for details on converting a floating point representation to fixed-point for speed. |
|
|
|
:param map2: The second map of y values having the type CV_32FC1 , or none (empty map if map1 is (x,y) points), respectively. |
|
|
|
:param interpolation: The interpolation method |
|
|
|
:param bordertype: Pixel extrapolation method. Only BORDER_CONSTANT are supported now. |
|
|
|
:param value: The border value if borderType==BORDER CONSTANT |
|
|
|
The function remap transforms the source image using the specified map: dst (x ,y) = src (map1(x , y) , map2(x , y)) where values of pixels with non-integer coordinates are computed using one of available interpolation methods. map1 and map2 can be encoded as separate floating-point maps in map1 and map2 respectively, or interleaved floating-point maps of (x,y) in map1. Supports CV_8UC1, CV_8UC3, CV_8UC4, CV_32FC1 , CV_32FC3 and CV_32FC4 data types. |
|
|
|
ocl::resize |
|
------------------ |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::resize(const oclMat &src, oclMat &dst, Size dsize, double fx = 0, double fy = 0, int interpolation = INTER_LINEAR) |
|
|
|
:param src: Source image. |
|
|
|
:param dst: Destination image. |
|
|
|
:param dsize: he destination image size. If it is zero, then it is computed as: dsize = Size(round(fx*src.cols), round(fy*src.rows)). Either dsize or both fx or fy must be non-zero. |
|
|
|
:param fx: The scale factor along the horizontal axis. When 0, it is computed as (double)dsize.width/src.cols |
|
|
|
:param fy: The scale factor along the vertical axis. When 0, it is computed as (double)dsize.height/src.rows |
|
|
|
:param interpolation: The interpolation method: INTER NEAREST or INTER LINEAR |
|
|
|
Resizes an image. Supports CV_8UC1, CV_8UC3, CV_8UC4, CV_32FC1 , CV_32FC3 and CV_32FC4 data types. |
|
|
|
ocl::warpAffine |
|
------------------- |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::warpAffine(const oclMat &src, oclMat &dst, const Mat &M, Size dsize, int flags = INTER_LINEAR) |
|
|
|
:param src: Source image. |
|
|
|
:param dst: Destination image. |
|
|
|
:param M: 2times 3 transformation matrix |
|
|
|
:param dsize: Size of the destination image |
|
|
|
:param flags: A combination of interpolation methods, see cv::resize, and the optional flag WARP INVERSE MAP that means that M is the inverse transformation (dst to $src) |
|
|
|
The function warpAffine transforms the source image using the specified matrix. Supports INTER_NEAREST, INTER_LINEAR, INTER_CUBIC types. |
|
|
|
ocl::warpPerspective |
|
------------------------ |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::warpPerspective(const oclMat &src, oclMat &dst, const Mat &M, Size dsize, int flags = INTER_LINEAR) |
|
|
|
:param src: Source image. |
|
|
|
:param dst: Destination image. |
|
|
|
:param M: 2times 3 transformation matrix |
|
|
|
:param dsize: Size of the destination image |
|
|
|
:param flags: A combination of interpolation methods, see cv::resize, and the optional flag WARP INVERSE MAP that means that M is the inverse transformation (dst to $src) |
|
|
|
Applies a perspective transformation to an image. Supports INTER_NEAREST, INTER_LINEAR, INTER_CUBIC types. |
|
|
|
ocl::cvtColor |
|
------------------ |
|
Returns void |
|
|
|
.. ocv:function:: void ocl::cvtColor(const oclMat &src, oclMat &dst, int code , int dcn = 0) |
|
|
|
:param src: Source image. |
|
|
|
:param dst: Destination image. |
|
|
|
:param code:The color space conversion code |
|
|
|
:param dcn: The number of channels in the destination image; if the parameter is 0, the number of the channels will be derived automatically from src and the code |
|
|
|
Converts image from one color space to another.For now, only RGB2GRAY is supportted. Supports.CV_8UC1,CV_8UC4,CV_32SC1,CV_32SC4,CV_32FC1,CV_32FC4 |
|
|
|
ocl::threshold |
|
------------------ |
|
Returns Threshold value |
|
|
|
.. ocv:function:: double ocl::threshold(const oclMat &src, oclMat &dst, double thresh, double maxVal, int type = THRESH_TRUNC) |
|
|
|
:param src: The source array |
|
|
|
:param dst: Destination array; will have the same size and the same type as src |
|
|
|
:param thresh: Threshold value |
|
|
|
:param maxVal: Maximum value to use with THRESH BINARY and THRESH BINARY INV thresholding types |
|
|
|
:param type: Thresholding type |
|
|
|
The function applies fixed-level thresholding to a single-channel array. The function is typically used to get a bi-level (binary) image out of a grayscale image or for removing a noise, i.e. filtering out pixels with too small or too large values. There are several types of thresholding that the function supports that are determined by thresholdType. Supports only CV_32FC1 and CV_8UC1 data type. |
|
|
|
ocl::buildWarpPlaneMaps |
|
----------------------- |
|
Builds plane warping maps. |
|
|
|
.. ocv:function:: void ocl::buildWarpPlaneMaps( Size src_size, Rect dst_roi, const Mat& K, const Mat& R, const Mat& T, float scale, oclMat& map_x, oclMat& map_y ) |
|
|
|
|
|
|
|
ocl::buildWarpCylindricalMaps |
|
----------------------------- |
|
Builds cylindrical warping maps. |
|
|
|
.. ocv:function:: void ocl::buildWarpCylindricalMaps( Size src_size, Rect dst_roi, const Mat& K, const Mat& R, float scale, oclMat& map_x, oclMat& map_y ) |
|
|
|
|
|
|
|
|
|
ocl::buildWarpSphericalMaps |
|
--------------------------- |
|
Builds spherical warping maps. |
|
|
|
.. ocv:function:: void ocl::buildWarpSphericalMaps( Size src_size, Rect dst_roi, const Mat& K, const Mat& R, float scale, oclMat& map_x, oclMat& map_y ) |
|
|
|
|
|
ocl::buildWarpPerspectiveMaps |
|
----------------------------- |
|
Builds transformation maps for perspective transformation. |
|
|
|
.. ocv:function:: void ocl::buildWarpAffineMaps(const Mat& M, bool inverse, Size dsize, oclMat& xmap, oclMat& ymap) |
|
|
|
:param M: *3x3* transformation matrix. |
|
|
|
:param inverse: Flag specifying that ``M`` is an inverse transformation ( ``dst=>src`` ). |
|
|
|
:param dsize: Size of the destination image. |
|
|
|
:param xmap: X values with ``CV_32FC1`` type. |
|
|
|
:param ymap: Y values with ``CV_32FC1`` type. |
|
|
|
.. seealso:: :ocv:func:`ocl::warpPerspective` , :ocv:func:`ocl::remap` |
|
|
|
|
|
ocl::buildWarpAffineMaps |
|
---------------------------- |
|
Builds transformation maps for affine transformation. |
|
|
|
.. ocv:function:: void ocl::buildWarpAffineMaps(const Mat& M, bool inverse, Size dsize, oclMat& xmap, oclMat& ymap) |
|
|
|
:param M: *2x3* transformation matrix. |
|
|
|
:param inverse: Flag specifying that ``M`` is an inverse transformation ( ``dst=>src`` ). |
|
|
|
:param dsize: Size of the destination image. |
|
|
|
:param xmap: X values with ``CV_32FC1`` type. |
|
|
|
:param ymap: Y values with ``CV_32FC1`` type. |
|
|
|
.. seealso:: :ocv:func:`ocl::warpAffine` , :ocv:func:`ocl::remap` |