OpenCV: imgproc/include/opencv2/imgproc.hpp File Reference

| OpenCV 3.4.2 Open Source Computer Vision

Classes | Namespaces | Macros | Enumerations | Functions
imgproc.hpp File Reference
`#include "opencv2/core.hpp"`
`#include "opencv2/imgproc/imgproc_c.h"`

## Classes
class | cv::CLAHE
| Base class for Contrast Limited Adaptive Histogram Equalization. : More...
class | cv::GeneralizedHough
| finds arbitrary template in the grayscale image using Generalized Hough Transform More...
class | cv::GeneralizedHoughBallard
class | cv::GeneralizedHoughGuil
class | cv::LineIterator
| Line iterator. More...
class | cv::LineSegmentDetector
| Line segment detector class. More...
struct | cv::Subdiv2D::QuadEdge
class | cv::Subdiv2D
struct | cv::Subdiv2D::Vertex

## Namespaces
| cv

## Macros
#define | CV_RGB(r, g, b) cv::Scalar((b), (g), (r), 0)

## Enumerations
enum | cv::AdaptiveThresholdTypes { cv::ADAPTIVE_THRESH_MEAN_C = 0, cv::ADAPTIVE_THRESH_GAUSSIAN_C = 1 }
enum | cv::ColorConversionCodes { cv::COLOR_BGR2BGRA = 0, cv::COLOR_RGB2RGBA = COLOR_BGR2BGRA, cv::COLOR_BGRA2BGR = 1, cv::COLOR_RGBA2RGB = COLOR_BGRA2BGR, cv::COLOR_BGR2RGBA = 2, cv::COLOR_RGB2BGRA = COLOR_BGR2RGBA, cv::COLOR_RGBA2BGR = 3, cv::COLOR_BGRA2RGB = COLOR_RGBA2BGR, cv::COLOR_BGR2RGB = 4, cv::COLOR_RGB2BGR = COLOR_BGR2RGB, cv::COLOR_BGRA2RGBA = 5, cv::COLOR_RGBA2BGRA = COLOR_BGRA2RGBA, cv::COLOR_BGR2GRAY = 6, cv::COLOR_RGB2GRAY = 7, cv::COLOR_GRAY2BGR = 8, cv::COLOR_GRAY2RGB = COLOR_GRAY2BGR, cv::COLOR_GRAY2BGRA = 9, cv::COLOR_GRAY2RGBA = COLOR_GRAY2BGRA, cv::COLOR_BGRA2GRAY = 10, cv::COLOR_RGBA2GRAY = 11, cv::COLOR_BGR2BGR565 = 12, cv::COLOR_RGB2BGR565 = 13, cv::COLOR_BGR5652BGR = 14, cv::COLOR_BGR5652RGB = 15, cv::COLOR_BGRA2BGR565 = 16, cv::COLOR_RGBA2BGR565 = 17, cv::COLOR_BGR5652BGRA = 18, cv::COLOR_BGR5652RGBA = 19, cv::COLOR_GRAY2BGR565 = 20, cv::COLOR_BGR5652GRAY = 21, cv::COLOR_BGR2BGR555 = 22, cv::COLOR_RGB2BGR555 = 23, cv::COLOR_BGR5552BGR = 24, cv::COLOR_BGR5552RGB = 25, cv::COLOR_BGRA2BGR555 = 26, cv::COLOR_RGBA2BGR555 = 27, cv::COLOR_BGR5552BGRA = 28, cv::COLOR_BGR5552RGBA = 29, cv::COLOR_GRAY2BGR555 = 30, cv::COLOR_BGR5552GRAY = 31, cv::COLOR_BGR2XYZ = 32, cv::COLOR_RGB2XYZ = 33, cv::COLOR_XYZ2BGR = 34, cv::COLOR_XYZ2RGB = 35, cv::COLOR_BGR2YCrCb = 36, cv::COLOR_RGB2YCrCb = 37, cv::COLOR_YCrCb2BGR = 38, cv::COLOR_YCrCb2RGB = 39, cv::COLOR_BGR2HSV = 40, cv::COLOR_RGB2HSV = 41, cv::COLOR_BGR2Lab = 44, cv::COLOR_RGB2Lab = 45, cv::COLOR_BGR2Luv = 50, cv::COLOR_RGB2Luv = 51, cv::COLOR_BGR2HLS = 52, cv::COLOR_RGB2HLS = 53, cv::COLOR_HSV2BGR = 54, cv::COLOR_HSV2RGB = 55, cv::COLOR_Lab2BGR = 56, cv::COLOR_Lab2RGB = 57, cv::COLOR_Luv2BGR = 58, cv::COLOR_Luv2RGB = 59, cv::COLOR_HLS2BGR = 60, cv::COLOR_HLS2RGB = 61, cv::COLOR_BGR2HSV_FULL = 66, cv::COLOR_RGB2HSV_FULL = 67, cv::COLOR_BGR2HLS_FULL = 68, cv::COLOR_RGB2HLS_FULL = 69, cv::COLOR_HSV2BGR_FULL = 70, cv::COLOR_HSV2RGB_FULL = 71, cv::COLOR_HLS2BGR_FULL = 72, cv::COLOR_HLS2RGB_FULL = 73, cv::COLOR_LBGR2Lab = 74, cv::COLOR_LRGB2Lab = 75, cv::COLOR_LBGR2Luv = 76, cv::COLOR_LRGB2Luv = 77, cv::COLOR_Lab2LBGR = 78, cv::COLOR_Lab2LRGB = 79, cv::COLOR_Luv2LBGR = 80, cv::COLOR_Luv2LRGB = 81, cv::COLOR_BGR2YUV = 82, cv::COLOR_RGB2YUV = 83, cv::COLOR_YUV2BGR = 84, cv::COLOR_YUV2RGB = 85, cv::COLOR_YUV2RGB_NV12 = 90, cv::COLOR_YUV2BGR_NV12 = 91, cv::COLOR_YUV2RGB_NV21 = 92, cv::COLOR_YUV2BGR_NV21 = 93, cv::COLOR_YUV420sp2RGB = COLOR_YUV2RGB_NV21, cv::COLOR_YUV420sp2BGR = COLOR_YUV2BGR_NV21, cv::COLOR_YUV2RGBA_NV12 = 94, cv::COLOR_YUV2BGRA_NV12 = 95, cv::COLOR_YUV2RGBA_NV21 = 96, cv::COLOR_YUV2BGRA_NV21 = 97, cv::COLOR_YUV420sp2RGBA = COLOR_YUV2RGBA_NV21, cv::COLOR_YUV420sp2BGRA = COLOR_YUV2BGRA_NV21, cv::COLOR_YUV2RGB_YV12 = 98, cv::COLOR_YUV2BGR_YV12 = 99, cv::COLOR_YUV2RGB_IYUV = 100, cv::COLOR_YUV2BGR_IYUV = 101, cv::COLOR_YUV2RGB_I420 = COLOR_YUV2RGB_IYUV, cv::COLOR_YUV2BGR_I420 = COLOR_YUV2BGR_IYUV, cv::COLOR_YUV420p2RGB = COLOR_YUV2RGB_YV12, cv::COLOR_YUV420p2BGR = COLOR_YUV2BGR_YV12, cv::COLOR_YUV2RGBA_YV12 = 102, cv::COLOR_YUV2BGRA_YV12 = 103, cv::COLOR_YUV2RGBA_IYUV = 104, cv::COLOR_YUV2BGRA_IYUV = 105, cv::COLOR_YUV2RGBA_I420 = COLOR_YUV2RGBA_IYUV, cv::COLOR_YUV2BGRA_I420 = COLOR_YUV2BGRA_IYUV, cv::COLOR_YUV420p2RGBA = COLOR_YUV2RGBA_YV12, cv::COLOR_YUV420p2BGRA = COLOR_YUV2BGRA_YV12, cv::COLOR_YUV2GRAY_420 = 106, cv::COLOR_YUV2GRAY_NV21 = COLOR_YUV2GRAY_420, cv::COLOR_YUV2GRAY_NV12 = COLOR_YUV2GRAY_420, cv::COLOR_YUV2GRAY_YV12 = COLOR_YUV2GRAY_420, cv::COLOR_YUV2GRAY_IYUV = COLOR_YUV2GRAY_420, cv::COLOR_YUV2GRAY_I420 = COLOR_YUV2GRAY_420, cv::COLOR_YUV420sp2GRAY = COLOR_YUV2GRAY_420, cv::COLOR_YUV420p2GRAY = COLOR_YUV2GRAY_420, cv::COLOR_YUV2RGB_UYVY = 107, cv::COLOR_YUV2BGR_UYVY = 108, cv::COLOR_YUV2RGB_Y422 = COLOR_YUV2RGB_UYVY, cv::COLOR_YUV2BGR_Y422 = COLOR_YUV2BGR_UYVY, cv::COLOR_YUV2RGB_UYNV = COLOR_YUV2RGB_UYVY, cv::COLOR_YUV2BGR_UYNV = COLOR_YUV2BGR_UYVY, cv::COLOR_YUV2RGBA_UYVY = 111, cv::COLOR_YUV2BGRA_UYVY = 112, cv::COLOR_YUV2RGBA_Y422 = COLOR_YUV2RGBA_UYVY, cv::COLOR_YUV2BGRA_Y422 = COLOR_YUV2BGRA_UYVY, cv::COLOR_YUV2RGBA_UYNV = COLOR_YUV2RGBA_UYVY, cv::COLOR_YUV2BGRA_UYNV = COLOR_YUV2BGRA_UYVY, cv::COLOR_YUV2RGB_YUY2 = 115, cv::COLOR_YUV2BGR_YUY2 = 116, cv::COLOR_YUV2RGB_YVYU = 117, cv::COLOR_YUV2BGR_YVYU = 118, cv::COLOR_YUV2RGB_YUYV = COLOR_YUV2RGB_YUY2, cv::COLOR_YUV2BGR_YUYV = COLOR_YUV2BGR_YUY2, cv::COLOR_YUV2RGB_YUNV = COLOR_YUV2RGB_YUY2, cv::COLOR_YUV2BGR_YUNV = COLOR_YUV2BGR_YUY2, cv::COLOR_YUV2RGBA_YUY2 = 119, cv::COLOR_YUV2BGRA_YUY2 = 120, cv::COLOR_YUV2RGBA_YVYU = 121, cv::COLOR_YUV2BGRA_YVYU = 122, cv::COLOR_YUV2RGBA_YUYV = COLOR_YUV2RGBA_YUY2, cv::COLOR_YUV2BGRA_YUYV = COLOR_YUV2BGRA_YUY2, cv::COLOR_YUV2RGBA_YUNV = COLOR_YUV2RGBA_YUY2, cv::COLOR_YUV2BGRA_YUNV = COLOR_YUV2BGRA_YUY2, cv::COLOR_YUV2GRAY_UYVY = 123, cv::COLOR_YUV2GRAY_YUY2 = 124, cv::COLOR_YUV2GRAY_Y422 = COLOR_YUV2GRAY_UYVY, cv::COLOR_YUV2GRAY_UYNV = COLOR_YUV2GRAY_UYVY, cv::COLOR_YUV2GRAY_YVYU = COLOR_YUV2GRAY_YUY2, cv::COLOR_YUV2GRAY_YUYV = COLOR_YUV2GRAY_YUY2, cv::COLOR_YUV2GRAY_YUNV = COLOR_YUV2GRAY_YUY2, cv::COLOR_RGBA2mRGBA = 125, cv::COLOR_mRGBA2RGBA = 126, cv::COLOR_RGB2YUV_I420 = 127, cv::COLOR_BGR2YUV_I420 = 128, cv::COLOR_RGB2YUV_IYUV = COLOR_RGB2YUV_I420, cv::COLOR_BGR2YUV_IYUV = COLOR_BGR2YUV_I420, cv::COLOR_RGBA2YUV_I420 = 129, cv::COLOR_BGRA2YUV_I420 = 130, cv::COLOR_RGBA2YUV_IYUV = COLOR_RGBA2YUV_I420, cv::COLOR_BGRA2YUV_IYUV = COLOR_BGRA2YUV_I420, cv::COLOR_RGB2YUV_YV12 = 131, cv::COLOR_BGR2YUV_YV12 = 132, cv::COLOR_RGBA2YUV_YV12 = 133, cv::COLOR_BGRA2YUV_YV12 = 134, cv::COLOR_BayerBG2BGR = 46, cv::COLOR_BayerGB2BGR = 47, cv::COLOR_BayerRG2BGR = 48, cv::COLOR_BayerGR2BGR = 49, cv::COLOR_BayerBG2RGB = COLOR_BayerRG2BGR, cv::COLOR_BayerGB2RGB = COLOR_BayerGR2BGR, cv::COLOR_BayerRG2RGB = COLOR_BayerBG2BGR, cv::COLOR_BayerGR2RGB = COLOR_BayerGB2BGR, cv::COLOR_BayerBG2GRAY = 86, cv::COLOR_BayerGB2GRAY = 87, cv::COLOR_BayerRG2GRAY = 88, cv::COLOR_BayerGR2GRAY = 89, cv::COLOR_BayerBG2BGR_VNG = 62, cv::COLOR_BayerGB2BGR_VNG = 63, cv::COLOR_BayerRG2BGR_VNG = 64, cv::COLOR_BayerGR2BGR_VNG = 65, cv::COLOR_BayerBG2RGB_VNG = COLOR_BayerRG2BGR_VNG, cv::COLOR_BayerGB2RGB_VNG = COLOR_BayerGR2BGR_VNG, cv::COLOR_BayerRG2RGB_VNG = COLOR_BayerBG2BGR_VNG, cv::COLOR_BayerGR2RGB_VNG = COLOR_BayerGB2BGR_VNG, cv::COLOR_BayerBG2BGR_EA = 135, cv::COLOR_BayerGB2BGR_EA = 136, cv::COLOR_BayerRG2BGR_EA = 137, cv::COLOR_BayerGR2BGR_EA = 138, cv::COLOR_BayerBG2RGB_EA = COLOR_BayerRG2BGR_EA, cv::COLOR_BayerGB2RGB_EA = COLOR_BayerGR2BGR_EA, cv::COLOR_BayerRG2RGB_EA = COLOR_BayerBG2BGR_EA, cv::COLOR_BayerGR2RGB_EA = COLOR_BayerGB2BGR_EA, cv::COLOR_BayerBG2BGRA = 139, cv::COLOR_BayerGB2BGRA = 140, cv::COLOR_BayerRG2BGRA = 141, cv::COLOR_BayerGR2BGRA = 142, cv::COLOR_BayerBG2RGBA = COLOR_BayerRG2BGRA, cv::COLOR_BayerGB2RGBA = COLOR_BayerGR2BGRA, cv::COLOR_BayerRG2RGBA = COLOR_BayerBG2BGRA, cv::COLOR_BayerGR2RGBA = COLOR_BayerGB2BGRA, cv::COLOR_COLORCVT_MAX = 143 }
enum | cv::ColormapTypes { cv::COLORMAP_AUTUMN = 0, cv::COLORMAP_BONE = 1, cv::COLORMAP_JET = 2, cv::COLORMAP_WINTER = 3, cv::COLORMAP_RAINBOW = 4, cv::COLORMAP_OCEAN = 5, cv::COLORMAP_SUMMER = 6, cv::COLORMAP_SPRING = 7, cv::COLORMAP_COOL = 8, cv::COLORMAP_HSV = 9, cv::COLORMAP_PINK = 10, cv::COLORMAP_HOT = 11, cv::COLORMAP_PARULA = 12 }
| GNU Octave/MATLAB equivalent colormaps. More...
enum | cv::ConnectedComponentsAlgorithmsTypes { cv::CCL_WU = 0, cv::CCL_DEFAULT = -1, cv::CCL_GRANA = 1 }
| connected components algorithm More...
enum | cv::ConnectedComponentsTypes { cv::CC_STAT_LEFT = 0, cv::CC_STAT_TOP = 1, cv::CC_STAT_WIDTH = 2, cv::CC_STAT_HEIGHT = 3, cv::CC_STAT_AREA = 4, cv::CC_STAT_MAX = 5 }
| connected components algorithm output formats More...
enum | cv::ContourApproximationModes { cv::CHAIN_APPROX_NONE = 1, cv::CHAIN_APPROX_SIMPLE = 2, cv::CHAIN_APPROX_TC89_L1 = 3, cv::CHAIN_APPROX_TC89_KCOS = 4 }
| the contour approximation algorithm More...
enum | cv::DistanceTransformLabelTypes { cv::DIST_LABEL_CCOMP = 0, cv::DIST_LABEL_PIXEL = 1 }
| distanceTransform algorithm flags More...
enum | cv::DistanceTransformMasks { cv::DIST_MASK_3 = 3, cv::DIST_MASK_5 = 5, cv::DIST_MASK_PRECISE = 0 }
| Mask size for distance transform. More...
enum | cv::DistanceTypes { cv::DIST_USER = -1, cv::DIST_L1 = 1, cv::DIST_L2 = 2, cv::DIST_C = 3, cv::DIST_L12 = 4, cv::DIST_FAIR = 5, cv::DIST_WELSCH = 6, cv::DIST_HUBER = 7 }
enum | cv::FloodFillFlags { cv::FLOODFILL_FIXED_RANGE = 1 << 16, cv::FLOODFILL_MASK_ONLY = 1 << 17 }
| floodfill algorithm flags More...
enum | cv::GrabCutClasses { cv::GC_BGD = 0, cv::GC_FGD = 1, cv::GC_PR_BGD = 2, cv::GC_PR_FGD = 3 }
| class of the pixel in GrabCut algorithm More...
enum | cv::GrabCutModes { cv::GC_INIT_WITH_RECT = 0, cv::GC_INIT_WITH_MASK = 1, cv::GC_EVAL = 2, cv::GC_EVAL_FREEZE_MODEL = 3 }
| GrabCut algorithm flags. More...
enum | cv::HistCompMethods { cv::HISTCMP_CORREL = 0, cv::HISTCMP_CHISQR = 1, cv::HISTCMP_INTERSECT = 2, cv::HISTCMP_BHATTACHARYYA = 3, cv::HISTCMP_HELLINGER = HISTCMP_BHATTACHARYYA, cv::HISTCMP_CHISQR_ALT = 4, cv::HISTCMP_KL_DIV = 5 }
enum | cv::HoughModes { cv::HOUGH_STANDARD = 0, cv::HOUGH_PROBABILISTIC = 1, cv::HOUGH_MULTI_SCALE = 2, cv::HOUGH_GRADIENT = 3 }
| Variants of a Hough transform. More...
enum | cv::InterpolationFlags { cv::INTER_NEAREST = 0, cv::INTER_LINEAR = 1, cv::INTER_CUBIC = 2, cv::INTER_AREA = 3, cv::INTER_LANCZOS4 = 4, cv::INTER_LINEAR_EXACT = 5, cv::INTER_MAX = 7, cv::WARP_FILL_OUTLIERS = 8, cv::WARP_INVERSE_MAP = 16 }
| interpolation algorithm More...
enum | cv::InterpolationMasks { cv::INTER_BITS = 5, cv::INTER_BITS2 = INTER_BITS * 2, cv::INTER_TAB_SIZE = 1 << INTER_BITS, cv::INTER_TAB_SIZE2 = INTER_TAB_SIZE * INTER_TAB_SIZE }
enum | cv::LineSegmentDetectorModes { cv::LSD_REFINE_NONE = 0, cv::LSD_REFINE_STD = 1, cv::LSD_REFINE_ADV = 2 }
enum | cv::MarkerTypes { cv::MARKER_CROSS = 0, cv::MARKER_TILTED_CROSS = 1, cv::MARKER_STAR = 2, cv::MARKER_DIAMOND = 3, cv::MARKER_SQUARE = 4, cv::MARKER_TRIANGLE_UP = 5, cv::MARKER_TRIANGLE_DOWN = 6 }
| Possible set of marker types used for the cv::drawMarker function. More...
enum | cv::MorphShapes { cv::MORPH_RECT = 0, cv::MORPH_CROSS = 1, cv::MORPH_ELLIPSE = 2 }
| shape of the structuring element More...
enum | cv::MorphTypes { cv::MORPH_ERODE = 0, cv::MORPH_DILATE = 1, cv::MORPH_OPEN = 2, cv::MORPH_CLOSE = 3, cv::MORPH_GRADIENT = 4, cv::MORPH_TOPHAT = 5, cv::MORPH_BLACKHAT = 6, cv::MORPH_HITMISS = 7 }
| type of morphological operation More...
enum | cv::RectanglesIntersectTypes { cv::INTERSECT_NONE = 0, cv::INTERSECT_PARTIAL = 1, cv::INTERSECT_FULL = 2 }
enum | cv::RetrievalModes { cv::RETR_EXTERNAL = 0, cv::RETR_LIST = 1, cv::RETR_CCOMP = 2, cv::RETR_TREE = 3, cv::RETR_FLOODFILL = 4 }
| mode of the contour retrieval algorithm More...
enum | cv::ShapeMatchModes { cv::CONTOURS_MATCH_I1 =1, cv::CONTOURS_MATCH_I2 =2, cv::CONTOURS_MATCH_I3 =3 }
| Shape matching methods. More...
enum | cv::TemplateMatchModes { cv::TM_SQDIFF = 0, cv::TM_SQDIFF_NORMED = 1, cv::TM_CCORR = 2, cv::TM_CCORR_NORMED = 3, cv::TM_CCOEFF = 4, cv::TM_CCOEFF_NORMED = 5 }
| type of the template matching operation More...
enum | cv::ThresholdTypes { cv::THRESH_BINARY = 0, cv::THRESH_BINARY_INV = 1, cv::THRESH_TRUNC = 2, cv::THRESH_TOZERO = 3, cv::THRESH_TOZERO_INV = 4, cv::THRESH_MASK = 7, cv::THRESH_OTSU = 8, cv::THRESH_TRIANGLE = 16 }
enum | cv::UndistortTypes { cv::PROJ_SPHERICAL_ORTHO = 0, cv::PROJ_SPHERICAL_EQRECT = 1 }
| cv::undistort mode More...
enum | cv::WarpPolarMode { cv::WARP_POLAR_LINEAR = 0, cv::WARP_POLAR_LOG = 256 }
| Specify the polar mapping mode. More...

## Functions
void | cv::accumulate (InputArray src, InputOutputArray dst, InputArray mask=noArray())
| Adds an image to the accumulator image. More...
void | cv::accumulateProduct (InputArray src1, InputArray src2, InputOutputArray dst, InputArray mask=noArray())
| Adds the per-element product of two input images to the accumulator image. More...
void | cv::accumulateSquare (InputArray src, InputOutputArray dst, InputArray mask=noArray())
| Adds the square of a source image to the accumulator image. More...
void | cv::accumulateWeighted (InputArray src, InputOutputArray dst, double alpha, InputArray mask=noArray())
| Updates a running average. More...
void | cv::adaptiveThreshold (InputArray src, OutputArray dst, double maxValue, int adaptiveMethod, int thresholdType, int blockSize, double C)
| Applies an adaptive threshold to an array. More...
void | cv::applyColorMap (InputArray src, OutputArray dst, int colormap)
| Applies a GNU Octave/MATLAB equivalent colormap on a given image. More...
void | cv::applyColorMap (InputArray src, OutputArray dst, InputArray userColor)
| Applies a user colormap on a given image. More...
void | cv::approxPolyDP (InputArray curve, OutputArray approxCurve, double epsilon, bool closed)
| Approximates a polygonal curve(s) with the specified precision. More...
double | cv::arcLength (InputArray curve, bool closed)
| Calculates a contour perimeter or a curve length. More...
void | cv::arrowedLine (InputOutputArray img, Point pt1, Point pt2, const Scalar &color, int thickness=1, int line_type=8, int shift=0, double tipLength=0.1)
| Draws a arrow segment pointing from the first point to the second one. More...
void | cv::bilateralFilter (InputArray src, OutputArray dst, int d, double sigmaColor, double sigmaSpace, int borderType=BORDER_DEFAULT)
| Applies the bilateral filter to an image. More...
void | cv::blendLinear (InputArray src1, InputArray src2, InputArray weights1, InputArray weights2, OutputArray dst)
void | cv::blur (InputArray src, OutputArray dst, Size ksize, Point anchor=Point(-1,-1), int borderType=BORDER_DEFAULT)
| Blurs an image using the normalized box filter. More...
Rect | cv::boundingRect (InputArray points)
| Calculates the up-right bounding rectangle of a point set. More...
void | cv::boxFilter (InputArray src, OutputArray dst, int ddepth, Size ksize, Point anchor=Point(-1,-1), bool normalize=true, int borderType=BORDER_DEFAULT)
| Blurs an image using the box filter. More...
void | cv::boxPoints (RotatedRect box, OutputArray points)
| Finds the four vertices of a rotated rect. Useful to draw the rotated rectangle. More...
void | cv::buildPyramid (InputArray src, OutputArrayOfArrays dst, int maxlevel, int borderType=BORDER_DEFAULT)
| Constructs the Gaussian pyramid for an image. More...
void | cv::calcBackProject (const Mat *images, int nimages, const int *channels, InputArray hist, OutputArray backProject, const float **ranges, double scale=1, bool uniform=true)
| Calculates the back projection of a histogram. More...
void | cv::calcBackProject (const Mat *images, int nimages, const int *channels, const SparseMat &hist, OutputArray backProject, const float **ranges, double scale=1, bool uniform=true)
void | cv::calcBackProject (InputArrayOfArrays images, const std::vector< int > &channels, InputArray hist, OutputArray dst, const std::vector< float > &ranges, double scale)
void | cv::calcHist (const Mat *images, int nimages, const int *channels, InputArray mask, OutputArray hist, int dims, const int *histSize, const float **ranges, bool uniform=true, bool accumulate=false)
| Calculates a histogram of a set of arrays. More...
void | cv::calcHist (const Mat *images, int nimages, const int *channels, InputArray mask, SparseMat &hist, int dims, const int *histSize, const float **ranges, bool uniform=true, bool accumulate=false)
void | cv::calcHist (InputArrayOfArrays images, const std::vector< int > &channels, InputArray mask, OutputArray hist, const std::vector< int > &histSize, const std::vector< float > &ranges, bool accumulate=false)
void | cv::Canny (InputArray image, OutputArray edges, double threshold1, double threshold2, int apertureSize=3, bool L2gradient=false)
| Finds edges in an image using the Canny algorithm [Canny86] . More...
void | cv::Canny (InputArray dx, InputArray dy, OutputArray edges, double threshold1, double threshold2, bool L2gradient=false)
void | cv::circle (InputOutputArray img, Point center, int radius, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
| Draws a circle. More...
bool | cv::clipLine (Size imgSize, Point &pt1, Point &pt2)
| Clips the line against the image rectangle. More...
bool | cv::clipLine (Size2l imgSize, Point2l &pt1, Point2l &pt2)
bool | cv::clipLine (Rect imgRect, Point &pt1, Point &pt2)
double | cv::compareHist (InputArray H1, InputArray H2, int method)
| Compares two histograms. More...
double | cv::compareHist (const SparseMat &H1, const SparseMat &H2, int method)
int | cv::connectedComponents (InputArray image, OutputArray labels, int connectivity, int ltype, int ccltype)
| computes the connected components labeled image of boolean image More...
int | cv::connectedComponents (InputArray image, OutputArray labels, int connectivity=8, int ltype=CV_32S)
int | cv::connectedComponentsWithStats (InputArray image, OutputArray labels, OutputArray stats, OutputArray centroids, int connectivity, int ltype, int ccltype)
| computes the connected components labeled image of boolean image and also produces a statistics output for each label More...
int | cv::connectedComponentsWithStats (InputArray image, OutputArray labels, OutputArray stats, OutputArray centroids, int connectivity=8, int ltype=CV_32S)
double | cv::contourArea (InputArray contour, bool oriented=false)
| Calculates a contour area. More...
void | cv::convertMaps (InputArray map1, InputArray map2, OutputArray dstmap1, OutputArray dstmap2, int dstmap1type, bool nninterpolation=false)
| Converts image transformation maps from one representation to another. More...
void | cv::convexHull (InputArray points, OutputArray hull, bool clockwise=false, bool returnPoints=true)
| Finds the convex hull of a point set. More...
void | cv::convexityDefects (InputArray contour, InputArray convexhull, OutputArray convexityDefects)
| Finds the convexity defects of a contour. More...
void | cv::cornerEigenValsAndVecs (InputArray src, OutputArray dst, int blockSize, int ksize, int borderType=BORDER_DEFAULT)
| Calculates eigenvalues and eigenvectors of image blocks for corner detection. More...
void | cv::cornerHarris (InputArray src, OutputArray dst, int blockSize, int ksize, double k, int borderType=BORDER_DEFAULT)
| Harris corner detector. More...
void | cv::cornerMinEigenVal (InputArray src, OutputArray dst, int blockSize, int ksize=3, int borderType=BORDER_DEFAULT)
| Calculates the minimal eigenvalue of gradient matrices for corner detection. More...
void | cv::cornerSubPix (InputArray image, InputOutputArray corners, Size winSize, Size zeroZone, TermCriteria criteria)
| Refines the corner locations. More...
Ptr< CLAHE > | cv::createCLAHE (double clipLimit=40.0, Size tileGridSize=Size(8, 8))
| Creates implementation for cv::CLAHE . More...
Ptr< GeneralizedHoughBallard > | cv::createGeneralizedHoughBallard ()
Ptr< GeneralizedHoughGuil > | cv::createGeneralizedHoughGuil ()
void | cv::createHanningWindow (OutputArray dst, Size winSize, int type)
| This function computes a Hanning window coefficients in two dimensions. More...
Ptr< LineSegmentDetector > | cv::createLineSegmentDetector (int _refine=LSD_REFINE_STD, double _scale=0.8, double _sigma_scale=0.6, double _quant=2.0, double _ang_th=22.5, double _log_eps=0, double _density_th=0.7, int _n_bins=1024)
| Creates a smart pointer to a LineSegmentDetector object and initializes it. More...
void | cv::cvtColor (InputArray src, OutputArray dst, int code, int dstCn=0)
| Converts an image from one color space to another. More...
void | cv::cvtColorTwoPlane (InputArray src1, InputArray src2, OutputArray dst, int code)
void | cv::demosaicing (InputArray _src, OutputArray _dst, int code, int dcn=0)
void | cv::dilate (InputArray src, OutputArray dst, InputArray kernel, Point anchor=Point(-1,-1), int iterations=1, int borderType=BORDER_CONSTANT, const Scalar &borderValue=morphologyDefaultBorderValue())
| Dilates an image by using a specific structuring element. More...
void | cv::distanceTransform (InputArray src, OutputArray dst, OutputArray labels, int distanceType, int maskSize, int labelType=DIST_LABEL_CCOMP)
| Calculates the distance to the closest zero pixel for each pixel of the source image. More...
void | cv::distanceTransform (InputArray src, OutputArray dst, int distanceType, int maskSize, int dstType=CV_32F)
void | cv::drawContours (InputOutputArray image, InputArrayOfArrays contours, int contourIdx, const Scalar &color, int thickness=1, int lineType=LINE_8, InputArray hierarchy=noArray(), int maxLevel=INT_MAX, Point offset=Point())
| Draws contours outlines or filled contours. More...
void | cv::drawMarker (Mat &img, Point position, const Scalar &color, int markerType=MARKER_CROSS, int markerSize=20, int thickness=1, int line_type=8)
| Draws a marker on a predefined position in an image. More...
void | cv::ellipse (InputOutputArray img, Point center, Size axes, double angle, double startAngle, double endAngle, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
| Draws a simple or thick elliptic arc or fills an ellipse sector. More...
void | cv::ellipse (InputOutputArray img, const RotatedRect &box, const Scalar &color, int thickness=1, int lineType=LINE_8)
void | cv::ellipse2Poly (Point center, Size axes, int angle, int arcStart, int arcEnd, int delta, std::vector< Point > &pts)
| Approximates an elliptic arc with a polyline. More...
void | cv::ellipse2Poly (Point2d center, Size2d axes, int angle, int arcStart, int arcEnd, int delta, std::vector< Point2d > &pts)
float | cv::EMD (InputArray signature1, InputArray signature2, int distType, InputArray cost=noArray(), float *lowerBound=0, OutputArray flow=noArray())
| Computes the "minimal work" distance between two weighted point configurations. More...
void | cv::equalizeHist (InputArray src, OutputArray dst)
| Equalizes the histogram of a grayscale image. More...
void | cv::erode (InputArray src, OutputArray dst, InputArray kernel, Point anchor=Point(-1,-1), int iterations=1, int borderType=BORDER_CONSTANT, const Scalar &borderValue=morphologyDefaultBorderValue())
| Erodes an image by using a specific structuring element. More...
void | cv::fillConvexPoly (Mat &img, const Point *pts, int npts, const Scalar &color, int lineType=LINE_8, int shift=0)
void | cv::fillConvexPoly (InputOutputArray img, InputArray points, const Scalar &color, int lineType=LINE_8, int shift=0)
| Fills a convex polygon. More...
void | cv::fillPoly (Mat &img, const Point **pts, const int *npts, int ncontours, const Scalar &color, int lineType=LINE_8, int shift=0, Point offset=Point())
void | cv::fillPoly (InputOutputArray img, InputArrayOfArrays pts, const Scalar &color, int lineType=LINE_8, int shift=0, Point offset=Point())
| Fills the area bounded by one or more polygons. More...
void | cv::filter2D (InputArray src, OutputArray dst, int ddepth, InputArray kernel, Point anchor=Point(-1,-1), double delta=0, int borderType=BORDER_DEFAULT)
| Convolves an image with the kernel. More...
void | cv::findContours (InputOutputArray image, OutputArrayOfArrays contours, OutputArray hierarchy, int mode, int method, Point offset=Point())
| Finds contours in a binary image. More...
void | cv::findContours (InputOutputArray image, OutputArrayOfArrays contours, int mode, int method, Point offset=Point())
RotatedRect | cv::fitEllipse (InputArray points)
| Fits an ellipse around a set of 2D points. More...
RotatedRect | cv::fitEllipseAMS (InputArray points)
| Fits an ellipse around a set of 2D points. More...
RotatedRect | cv::fitEllipseDirect (InputArray points)
| Fits an ellipse around a set of 2D points. More...
void | cv::fitLine (InputArray points, OutputArray line, int distType, double param, double reps, double aeps)
| Fits a line to a 2D or 3D point set. More...
int | cv::floodFill (InputOutputArray image, Point seedPoint, Scalar newVal, Rect *rect=0, Scalar loDiff=Scalar(), Scalar upDiff=Scalar(), int flags=4)
int | cv::floodFill (InputOutputArray image, InputOutputArray mask, Point seedPoint, Scalar newVal, Rect *rect=0, Scalar loDiff=Scalar(), Scalar upDiff=Scalar(), int flags=4)
| Fills a connected component with the given color. More...
void | cv::GaussianBlur (InputArray src, OutputArray dst, Size ksize, double sigmaX, double sigmaY=0, int borderType=BORDER_DEFAULT)
| Blurs an image using a Gaussian filter. More...
Mat | cv::getAffineTransform (const Point2f src[], const Point2f dst[])
| Calculates an affine transform from three pairs of the corresponding points. More...
Mat | cv::getAffineTransform (InputArray src, InputArray dst)
Mat | cv::getDefaultNewCameraMatrix (InputArray cameraMatrix, Size imgsize=Size(), bool centerPrincipalPoint=false)
| Returns the default new camera matrix. More...
void | cv::getDerivKernels (OutputArray kx, OutputArray ky, int dx, int dy, int ksize, bool normalize=false, int ktype=CV_32F)
| Returns filter coefficients for computing spatial image derivatives. More...
double | cv::getFontScaleFromHeight (const int fontFace, const int pixelHeight, const int thickness=1)
| Calculates the font-specific size to use to achieve a given height in pixels. More...
Mat | cv::getGaborKernel (Size ksize, double sigma, double theta, double lambd, double gamma, double psi=CV_PI *0.5, int ktype=CV_64F)
| Returns Gabor filter coefficients. More...
Mat | cv::getGaussianKernel (int ksize, double sigma, int ktype=CV_64F)
| Returns Gaussian filter coefficients. More...
Mat | cv::getPerspectiveTransform (const Point2f src[], const Point2f dst[])
| returns 3x3 perspective transformation for the corresponding 4 point pairs. More...
Mat | cv::getPerspectiveTransform (InputArray src, InputArray dst)
| Calculates a perspective transform from four pairs of the corresponding points. More...
void | cv::getRectSubPix (InputArray image, Size patchSize, Point2f center, OutputArray patch, int patchType=-1)
| Retrieves a pixel rectangle from an image with sub-pixel accuracy. More...
Mat | cv::getRotationMatrix2D (Point2f center, double angle, double scale)
| Calculates an affine matrix of 2D rotation. More...
Mat | cv::getStructuringElement (int shape, Size ksize, Point anchor=Point(-1,-1))
| Returns a structuring element of the specified size and shape for morphological operations. More...
Size | cv::getTextSize (const String &text, int fontFace, double fontScale, int thickness, int *baseLine)
| Calculates the width and height of a text string. More...
void | cv::goodFeaturesToTrack (InputArray image, OutputArray corners, int maxCorners, double qualityLevel, double minDistance, InputArray mask=noArray(), int blockSize=3, bool useHarrisDetector=false, double k=0.04)
| Determines strong corners on an image. More...
void | cv::goodFeaturesToTrack (InputArray image, OutputArray corners, int maxCorners, double qualityLevel, double minDistance, InputArray mask, int blockSize, int gradientSize, bool useHarrisDetector=false, double k=0.04)
void | cv::grabCut (InputArray img, InputOutputArray mask, Rect rect, InputOutputArray bgdModel, InputOutputArray fgdModel, int iterCount, int mode=GC_EVAL)
| Runs the GrabCut algorithm. More...
void | cv::HoughCircles (InputArray image, OutputArray circles, int method, double dp, double minDist, double param1=100, double param2=100, int minRadius=0, int maxRadius=0)
| Finds circles in a grayscale image using the Hough transform. More...
void | cv::HoughLines (InputArray image, OutputArray lines, double rho, double theta, int threshold, double srn=0, double stn=0, double min_theta=0, double max_theta=CV_PI)
| Finds lines in a binary image using the standard Hough transform. More...
void | cv::HoughLinesP (InputArray image, OutputArray lines, double rho, double theta, int threshold, double minLineLength=0, double maxLineGap=0)
| Finds line segments in a binary image using the probabilistic Hough transform. More...
void | cv::HoughLinesPointSet (InputArray _point, OutputArray _lines, int lines_max, int threshold, double min_rho, double max_rho, double rho_step, double min_theta, double max_theta, double theta_step)
| Finds lines in a set of points using the standard Hough transform. More...
void | cv::HuMoments (const Moments &moments, double hu[7])
| Calculates seven Hu invariants. More...
void | cv::HuMoments (const Moments &m, OutputArray hu)
void | cv::initUndistortRectifyMap (InputArray cameraMatrix, InputArray distCoeffs, InputArray R, InputArray newCameraMatrix, Size size, int m1type, OutputArray map1, OutputArray map2)
| Computes the undistortion and rectification transformation map. More...
float | cv::initWideAngleProjMap (InputArray cameraMatrix, InputArray distCoeffs, Size imageSize, int destImageWidth, int m1type, OutputArray map1, OutputArray map2, int projType=PROJ_SPHERICAL_EQRECT, double alpha=0)
| initializes maps for remap for wide-angle More...
void | cv::integral (InputArray src, OutputArray sum, int sdepth=-1)
void | cv::integral (InputArray src, OutputArray sum, OutputArray sqsum, int sdepth=-1, int sqdepth=-1)
void | cv::integral (InputArray src, OutputArray sum, OutputArray sqsum, OutputArray tilted, int sdepth=-1, int sqdepth=-1)
| Calculates the integral of an image. More...
float | cv::intersectConvexConvex (InputArray _p1, InputArray _p2, OutputArray _p12, bool handleNested=true)
| finds intersection of two convex polygons More...
void | cv::invertAffineTransform (InputArray M, OutputArray iM)
| Inverts an affine transformation. More...
bool | cv::isContourConvex (InputArray contour)
| Tests a contour convexity. More...
void | cv::Laplacian (InputArray src, OutputArray dst, int ddepth, int ksize=1, double scale=1, double delta=0, int borderType=BORDER_DEFAULT)
| Calculates the Laplacian of an image. More...
void | cv::line (InputOutputArray img, Point pt1, Point pt2, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
| Draws a line segment connecting two points. More...
void | cv::linearPolar (InputArray src, OutputArray dst, Point2f center, double maxRadius, int flags)
| Remaps an image to polar coordinates space. More...
void | cv::logPolar (InputArray src, OutputArray dst, Point2f center, double M, int flags)
| Remaps an image to semilog-polar coordinates space. More...
double | cv::matchShapes (InputArray contour1, InputArray contour2, int method, double parameter)
| Compares two shapes. More...
void | cv::matchTemplate (InputArray image, InputArray templ, OutputArray result, int method, InputArray mask=noArray())
| Compares a template against overlapped image regions. More...
void | cv::medianBlur (InputArray src, OutputArray dst, int ksize)
| Blurs an image using the median filter. More...
RotatedRect | cv::minAreaRect (InputArray points)
| Finds a rotated rectangle of the minimum area enclosing the input 2D point set. More...
void | cv::minEnclosingCircle (InputArray points, Point2f &center, float &radius)
| Finds a circle of the minimum area enclosing a 2D point set. More...
double | cv::minEnclosingTriangle (InputArray points, OutputArray triangle)
| Finds a triangle of minimum area enclosing a 2D point set and returns its area. More...
Moments | cv::moments (InputArray array, bool binaryImage=false)
| Calculates all of the moments up to the third order of a polygon or rasterized shape. More...
static Scalar | cv::morphologyDefaultBorderValue ()
| returns "magic" border value for erosion and dilation. It is automatically transformed to Scalar::all(-DBL_MAX) for dilation. More...
void | cv::morphologyEx (InputArray src, OutputArray dst, int op, InputArray kernel, Point anchor=Point(-1,-1), int iterations=1, int borderType=BORDER_CONSTANT, const Scalar &borderValue=morphologyDefaultBorderValue())
| Performs advanced morphological transformations. More...
Point2d | cv::phaseCorrelate (InputArray src1, InputArray src2, InputArray window=noArray(), double *response=0)
| The function is used to detect translational shifts that occur between two images. More...
double | cv::pointPolygonTest (InputArray contour, Point2f pt, bool measureDist)
| Performs a point-in-contour test. More...
void | cv::polylines (Mat &img, const Point *const *pts, const int *npts, int ncontours, bool isClosed, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
void | cv::polylines (InputOutputArray img, InputArrayOfArrays pts, bool isClosed, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
| Draws several polygonal curves. More...
void | cv::preCornerDetect (InputArray src, OutputArray dst, int ksize, int borderType=BORDER_DEFAULT)
| Calculates a feature map for corner detection. More...
void | cv::putText (InputOutputArray img, const String &text, Point org, int fontFace, double fontScale, Scalar color, int thickness=1, int lineType=LINE_8, bool bottomLeftOrigin=false)
| Draws a text string. More...
void | cv::pyrDown (InputArray src, OutputArray dst, const Size &dstsize=Size(), int borderType=BORDER_DEFAULT)
| Blurs an image and downsamples it. More...
void | cv::pyrMeanShiftFiltering (InputArray src, OutputArray dst, double sp, double sr, int maxLevel=1, TermCriteria termcrit=TermCriteria(TermCriteria::MAX_ITER+TermCriteria::EPS, 5, 1))
| Performs initial step of meanshift segmentation of an image. More...
void | cv::pyrUp (InputArray src, OutputArray dst, const Size &dstsize=Size(), int borderType=BORDER_DEFAULT)
| Upsamples an image and then blurs it. More...
void | cv::rectangle (InputOutputArray img, Point pt1, Point pt2, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
| Draws a simple, thick, or filled up-right rectangle. More...
void | cv::rectangle (Mat &img, Rect rec, const Scalar &color, int thickness=1, int lineType=LINE_8, int shift=0)
void | cv::remap (InputArray src, OutputArray dst, InputArray map1, InputArray map2, int interpolation, int borderMode=BORDER_CONSTANT, const Scalar &borderValue=Scalar())
| Applies a generic geometrical transformation to an image. More...
void | cv::resize (InputArray src, OutputArray dst, Size dsize, double fx=0, double fy=0, int interpolation=INTER_LINEAR)
| Resizes an image. More...
int | cv::rotatedRectangleIntersection (const RotatedRect &rect1, const RotatedRect &rect2, OutputArray intersectingRegion)
| Finds out if there is any intersection between two rotated rectangles. More...
void | cv::Scharr (InputArray src, OutputArray dst, int ddepth, int dx, int dy, double scale=1, double delta=0, int borderType=BORDER_DEFAULT)
| Calculates the first x- or y- image derivative using Scharr operator. More...
void | cv::sepFilter2D (InputArray src, OutputArray dst, int ddepth, InputArray kernelX, InputArray kernelY, Point anchor=Point(-1,-1), double delta=0, int borderType=BORDER_DEFAULT)
| Applies a separable linear filter to an image. More...
void | cv::Sobel (InputArray src, OutputArray dst, int ddepth, int dx, int dy, int ksize=3, double scale=1, double delta=0, int borderType=BORDER_DEFAULT)
| Calculates the first, second, third, or mixed image derivatives using an extended Sobel operator. More...
void | cv::spatialGradient (InputArray src, OutputArray dx, OutputArray dy, int ksize=3, int borderType=BORDER_DEFAULT)
| Calculates the first order image derivative in both x and y using a Sobel operator. More...
void | cv::sqrBoxFilter (InputArray _src, OutputArray _dst, int ddepth, Size ksize, Point anchor=Point(-1, -1), bool normalize=true, int borderType=BORDER_DEFAULT)
| Calculates the normalized sum of squares of the pixel values overlapping the filter. More...
double | cv::threshold (InputArray src, OutputArray dst, double thresh, double maxval, int type)
| Applies a fixed-level threshold to each array element. More...
void | cv::undistort (InputArray src, OutputArray dst, InputArray cameraMatrix, InputArray distCoeffs, InputArray newCameraMatrix=noArray())
| Transforms an image to compensate for lens distortion. More...
void | cv::undistortPoints (InputArray src, OutputArray dst, InputArray cameraMatrix, InputArray distCoeffs, InputArray R=noArray(), InputArray P=noArray())
| Computes the ideal point coordinates from the observed point coordinates. More...
void | cv::undistortPoints (InputArray src, OutputArray dst, InputArray cameraMatrix, InputArray distCoeffs, InputArray R, InputArray P, TermCriteria criteria)
void | cv::warpAffine (InputArray src, OutputArray dst, InputArray M, Size dsize, int flags=INTER_LINEAR, int borderMode=BORDER_CONSTANT, const Scalar &borderValue=Scalar())
| Applies an affine transformation to an image. More...
void | cv::warpPerspective (InputArray src, OutputArray dst, InputArray M, Size dsize, int flags=INTER_LINEAR, int borderMode=BORDER_CONSTANT, const Scalar &borderValue=Scalar())
| Applies a perspective transformation to an image. More...
void | cv::warpPolar (InputArray src, OutputArray dst, Size dsize, Point2f center, double maxRadius, int flags)
| Remaps an image to polar or semilog-polar coordinates space. More...
void | cv::watershed (InputArray image, InputOutputArray markers)
| Performs a marker-based image segmentation using the watershed algorithm. More...
float | cv::wrapperEMD (InputArray signature1, InputArray signature2, int distType, InputArray cost=noArray(), Ptr< float > lowerBound=Ptr< float >(), OutputArray flow=noArray())