C# Класс OpenCvSharp.Blob.CvBlobLib

Functions of cvblob library

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Открытые методы

Метод	Описание
BlobMeanColor ( CvBlobs blobs, CvBlob targetBlob, Mat originalImage ) : Scalar	Calculates mean color of a blob in an image.
CalcAngle ( CvBlob blob ) : double	Calculates angle orientation of a blob. This function uses central moments so cvCentralMoments should have been called before for this blob. (cvAngle)
CalcCentroid ( CvBlob blob ) : Point2d	Calculates centroid. Centroid will be returned and stored in the blob structure. (cvCentroid)
ContourChainCodePerimeter ( CvContourChainCode cc ) : double	Calculates perimeter of a chain code contour.
ContourPolygonArea ( CvContourPolygon polygon ) : double	Calculates area of a polygonal contour.
ContourPolygonCircularity ( CvContourPolygon polygon ) : double	Calculates the circularity of a polygon (compactness measure).
ContourPolygonPerimeter ( CvContourPolygon polygon ) : double	Calculates perimeter of a chain code contour.
ConvertChainCodesToPolygon ( CvContourChainCode cc ) : CvContourPolygon	Convert a chain code contour to a polygon.
FilterByArea ( CvBlobs blobs, int minArea, int maxArea ) : void	Filter blobs by area. Those blobs whose areas are not in range will be erased from the input list of blobs. (cvFilterByArea)
FilterByLabel ( CvBlobs blobs, int label ) : void	Filter blobs by label. Delete all blobs except those with label l.
FilterLabels ( CvBlobs blobs, Mat imgOut ) : void	Draw a binary image with the blobs that have been given. (cvFilterLabels)
GetLabel ( CvBlobs blobs, int x, int y ) : int	Get the label value from a labeled image.
GreaterBlob ( CvBlobs blobs ) : CvBlob	Find greater blob. (cvGreaterBlob)
Label ( Mat img, CvBlobs blobs ) : int	Label the connected parts of a binary image. (cvLabel)
LargestBlob ( CvBlobs blobs ) : CvBlob	Find the largest blob. (cvLargestBlob)
PolygonContourConvexHull ( CvContourPolygon polygon ) : CvContourPolygon	Calculates convex hull of a contour. Uses the Melkman Algorithm. Code based on the version in http://w3.impa.br/~rdcastan/Cgeometry/.
RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest ) : void	Draws or prints information about a blob.
RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest, RenderBlobsMode mode ) : void	Draws or prints information about a blob.
RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest, RenderBlobsMode mode, Scalar color, double alpha = 1.0 ) : void	Draws or prints information about a blob.
RenderBlobs ( CvBlobs blobs, Mat imgSource, Mat imgDest ) : void	Draws or prints information about blobs. (cvRenderBlobs)
RenderBlobs ( CvBlobs blobs, Mat imgSource, Mat imgDest, RenderBlobsMode mode, double alpha = 1.0 ) : void	Draws or prints information about blobs. (cvRenderBlobs)
RenderContourChainCode ( CvContourChainCode contour, Mat img ) : void	Draw a contour.
RenderContourChainCode ( CvContourChainCode contour, Mat img, Scalar color ) : void	Draw a contour.
RenderContourPolygon ( CvContourPolygon contour, Mat img ) : void	Draw a polygon.
RenderContourPolygon ( CvContourPolygon contour, Mat img, Scalar color ) : void	Draw a polygon.
RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest ) : void	Prints tracks information.
RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest, RenderTracksMode mode ) : void	Prints tracks information.
RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest, RenderTracksMode mode, Scalar textColor, HersheyFonts fontFace = HersheyFonts.HersheySimplex, double fontScale = 1d, int thickness = 1 ) : void	Prints tracks information.
SaveImageBlob ( string fileName, Mat img, CvBlob blob ) : void	Save the image of a blob to a file. The function uses an image (that can be the original pre-processed image or a processed one, or even the result of cvRenderBlobs, for example) and a blob structure. Then the function saves a copy of the part of the image where the blob is.
SimplifyPolygon ( CvContourPolygon polygon ) : CvContourPolygon	Simplify a polygon reducing the number of vertex according the distance "delta". Uses a version of the Ramer-Douglas-Peucker algorithm (http://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm).
SimplifyPolygon ( CvContourPolygon polygon, double delta ) : CvContourPolygon	Simplify a polygon reducing the number of vertex according the distance "delta". Uses a version of the Ramer-Douglas-Peucker algorithm (http://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm).
UpdateTracks ( CvBlobs blobs, CvTracks tracks, double thDistance, int thInactive ) : void	Updates list of tracks based on current blobs.
UpdateTracks ( CvBlobs blobs, CvTracks tracks, double thDistance, int thInactive, int thActive ) : void	Updates list of tracks based on current blobs. Tracking based on: A. Senior, A. Hampapur, Y-L Tian, L. Brown, S. Pankanti, R. Bolle. Appearance Models for Occlusion Handling. Second International workshop on Performance Evaluation of Tracking and Surveillance Systems & CVPR'01. December, 2001. (http://www.research.ibm.com/peoplevision/PETS2001.pdf)
WriteContourPolygonCsv ( CvContourPolygon polygon, string filename ) : void	Write a contour to a CSV (Comma-separated values) file.
WriteContourPolygonSvg ( CvContourPolygon polygon, string fileName ) : void	Write a contour to a SVG file.
WriteContourPolygonSvg ( CvContourPolygon polygon, string fileName, Scalar stroke, Scalar fill ) : void	Write a contour to a SVG file.

Описание методов

BlobMeanColor() публичный статический Метод

Calculates mean color of a blob in an image.

public static BlobMeanColor ( CvBlobs blobs, CvBlob targetBlob, Mat originalImage ) : Scalar
blobs	CvBlobs	Blob list
targetBlob	CvBlob	The target blob
originalImage	Mat	Original image.
Результат	Scalar

CalcAngle() публичный статический Метод

Calculates angle orientation of a blob. This function uses central moments so cvCentralMoments should have been called before for this blob. (cvAngle)

public static CalcAngle ( CvBlob blob ) : double
blob	CvBlob	Blob.
Результат	double

CalcCentroid() публичный статический Метод

Calculates centroid. Centroid will be returned and stored in the blob structure. (cvCentroid)

public static CalcCentroid ( CvBlob blob ) : Point2d
blob	CvBlob	Blob whose centroid will be calculated.
Результат	Point2d

ContourChainCodePerimeter() публичный статический Метод

Calculates perimeter of a chain code contour.

public static ContourChainCodePerimeter ( CvContourChainCode cc ) : double
cc	CvContourChainCode	Contour (chain code type).
Результат	double

ContourPolygonArea() публичный статический Метод

Calculates area of a polygonal contour.

public static ContourPolygonArea ( CvContourPolygon polygon ) : double
polygon	CvContourPolygon	Contour (polygon type).
Результат	double

ContourPolygonCircularity() публичный статический Метод

Calculates the circularity of a polygon (compactness measure).

public static ContourPolygonCircularity ( CvContourPolygon polygon ) : double
polygon	CvContourPolygon	Contour (polygon type).
Результат	double

ContourPolygonPerimeter() публичный статический Метод

Calculates perimeter of a chain code contour.

public static ContourPolygonPerimeter ( CvContourPolygon polygon ) : double
polygon	CvContourPolygon	Contour (polygon type).
Результат	double

ConvertChainCodesToPolygon() публичный статический Метод

Convert a chain code contour to a polygon.

public static ConvertChainCodesToPolygon ( CvContourChainCode cc ) : CvContourPolygon
cc	CvContourChainCode	Chain code contour.
Результат	CvContourPolygon

FilterByArea() публичный статический Метод

Filter blobs by area. Those blobs whose areas are not in range will be erased from the input list of blobs. (cvFilterByArea)

public static FilterByArea ( CvBlobs blobs, int minArea, int maxArea ) : void
blobs	CvBlobs	List of blobs.
minArea	int	Minimun area.
maxArea	int	Maximun area.
Результат	void

FilterByLabel() публичный статический Метод

Filter blobs by label. Delete all blobs except those with label l.

public static FilterByLabel ( CvBlobs blobs, int label ) : void
blobs	CvBlobs	List of blobs.
label	int	Label to leave.
Результат	void

FilterLabels() публичный статический Метод

Draw a binary image with the blobs that have been given. (cvFilterLabels)

public static FilterLabels ( CvBlobs blobs, Mat imgOut ) : void
blobs	CvBlobs	List of blobs to be drawn.
imgOut	Mat	Output binary image (depth=IPL_DEPTH_8U and nchannels=1).
Результат	void

GetLabel() публичный статический Метод

Get the label value from a labeled image.

public static GetLabel ( CvBlobs blobs, int x, int y ) : int
blobs	CvBlobs	Blob data.
x	int	X coordenate.
y	int	Y coordenate.
Результат	int

GreaterBlob() публичный статический Метод

Find greater blob. (cvGreaterBlob)

public static GreaterBlob ( CvBlobs blobs ) : CvBlob
blobs	CvBlobs	List of blobs.
Результат	CvBlob

Label() публичный статический Метод

Label the connected parts of a binary image. (cvLabel)

public static Label ( Mat img, CvBlobs blobs ) : int
img	Mat	Input binary image (depth=IPL_DEPTH_8U and num. channels=1).
blobs	CvBlobs	List of blobs.
Результат	int

LargestBlob() публичный статический Метод

Find the largest blob. (cvLargestBlob)

public static LargestBlob ( CvBlobs blobs ) : CvBlob
blobs	CvBlobs	List of blobs.
Результат	CvBlob

PolygonContourConvexHull() публичный статический Метод

Calculates convex hull of a contour. Uses the Melkman Algorithm. Code based on the version in http://w3.impa.br/~rdcastan/Cgeometry/.

public static PolygonContourConvexHull ( CvContourPolygon polygon ) : CvContourPolygon
polygon	CvContourPolygon	Contour (polygon type).
Результат	CvContourPolygon

RenderBlob() публичный статический Метод

Draws or prints information about a blob.

public static RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest ) : void
labels	LabelData	Label data.
blob	CvBlob	Blob.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
Результат	void

RenderBlob() публичный статический Метод

Draws or prints information about a blob.

public static RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest, RenderBlobsMode mode ) : void
labels	LabelData	Label data.
blob	CvBlob	Blob.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
mode	RenderBlobsMode	Render mode. By default is CV_BLOB_RENDER_COLOR\|CV_BLOB_RENDER_CENTROID\|CV_BLOB_RENDER_BOUNDING_BOX\|CV_BLOB_RENDER_ANGLE.
Результат	void

RenderBlob() публичный статический Метод

Draws or prints information about a blob.

public static RenderBlob ( LabelData labels, CvBlob blob, Mat imgSource, Mat imgDest, RenderBlobsMode mode, Scalar color, double alpha = 1.0 ) : void
labels	LabelData	Label data.
blob	CvBlob	Blob.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
mode	RenderBlobsMode	Render mode. By default is CV_BLOB_RENDER_COLOR\|CV_BLOB_RENDER_CENTROID\|CV_BLOB_RENDER_BOUNDING_BOX\|CV_BLOB_RENDER_ANGLE.
color	Scalar	Color to render (if CV_BLOB_RENDER_COLOR is used).
alpha	double	If mode CV_BLOB_RENDER_COLOR is used. 1.0 indicates opaque and 0.0 translucent (1.0 by default).
Результат	void

RenderBlobs() публичный статический Метод

Draws or prints information about blobs. (cvRenderBlobs)

public static RenderBlobs ( CvBlobs blobs, Mat imgSource, Mat imgDest ) : void
blobs	CvBlobs	List of blobs.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
Результат	void

RenderBlobs() публичный статический Метод

Draws or prints information about blobs. (cvRenderBlobs)

public static RenderBlobs ( CvBlobs blobs, Mat imgSource, Mat imgDest, RenderBlobsMode mode, double alpha = 1.0 ) : void
blobs	CvBlobs	List of blobs.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
mode	RenderBlobsMode	Render mode. By default is CV_BLOB_RENDER_COLOR\|CV_BLOB_RENDER_CENTROID\|CV_BLOB_RENDER_BOUNDING_BOX\|CV_BLOB_RENDER_ANGLE.
alpha	double	If mode CV_BLOB_RENDER_COLOR is used. 1.0 indicates opaque and 0.0 translucent (1.0 by default).
Результат	void

RenderContourChainCode() публичный статический Метод

Draw a contour.

public static RenderContourChainCode ( CvContourChainCode contour, Mat img ) : void
contour	CvContourChainCode	Chain code contour.
img	Mat	Image to draw on.
Результат	void

RenderContourChainCode() публичный статический Метод

Draw a contour.

public static RenderContourChainCode ( CvContourChainCode contour, Mat img, Scalar color ) : void
contour	CvContourChainCode	Chain code contour.
img	Mat	Image to draw on.
color	Scalar	Color to draw (default, white).
Результат	void

RenderContourPolygon() публичный статический Метод

Draw a polygon.

public static RenderContourPolygon ( CvContourPolygon contour, Mat img ) : void
contour	CvContourPolygon	Polygon contour.
img	Mat	Image to draw on.
Результат	void

RenderContourPolygon() публичный статический Метод

Draw a polygon.

public static RenderContourPolygon ( CvContourPolygon contour, Mat img, Scalar color ) : void
contour	CvContourPolygon	Polygon contour.
img	Mat	Image to draw on.
color	Scalar	Color to draw (default, white).
Результат	void

RenderTracks() публичный статический Метод

Prints tracks information.

public static RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest ) : void
tracks	CvTracks	List of tracks.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
Результат	void

RenderTracks() публичный статический Метод

Prints tracks information.

public static RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest, RenderTracksMode mode ) : void
tracks	CvTracks	List of tracks.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
mode	RenderTracksMode	Render mode. By default is CV_TRACK_RENDER_ID.
Результат	void

RenderTracks() публичный статический Метод

Prints tracks information.

public static RenderTracks ( CvTracks tracks, Mat imgSource, Mat imgDest, RenderTracksMode mode, Scalar textColor, HersheyFonts fontFace = HersheyFonts.HersheySimplex, double fontScale = 1d, int thickness = 1 ) : void
tracks	CvTracks	List of tracks.
imgSource	Mat	Input image (depth=IPL_DEPTH_8U and num. channels=3).
imgDest	Mat	Output image (depth=IPL_DEPTH_8U and num. channels=3).
mode	RenderTracksMode	Render mode. By default is CV_TRACK_RENDER_ID.
textColor	Scalar
fontFace	HersheyFonts
fontScale	double
thickness	int
Результат	void

SaveImageBlob() публичный статический Метод

Save the image of a blob to a file. The function uses an image (that can be the original pre-processed image or a processed one, or even the result of cvRenderBlobs, for example) and a blob structure. Then the function saves a copy of the part of the image where the blob is.

public static SaveImageBlob ( string fileName, Mat img, CvBlob blob ) : void
fileName	string	Name of the file.
img	Mat	Image.
blob	CvBlob	Blob.
Результат	void

SimplifyPolygon() публичный статический Метод

Simplify a polygon reducing the number of vertex according the distance "delta". Uses a version of the Ramer-Douglas-Peucker algorithm (http://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm).

public static SimplifyPolygon ( CvContourPolygon polygon ) : CvContourPolygon
polygon	CvContourPolygon	Contour (polygon type).
Результат	CvContourPolygon

SimplifyPolygon() публичный статический Метод

Simplify a polygon reducing the number of vertex according the distance "delta". Uses a version of the Ramer-Douglas-Peucker algorithm (http://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm).

public static SimplifyPolygon ( CvContourPolygon polygon, double delta ) : CvContourPolygon
polygon	CvContourPolygon	Contour (polygon type).
delta	double	Minimun distance.
Результат	CvContourPolygon

UpdateTracks() публичный статический Метод

Updates list of tracks based on current blobs.

public static UpdateTracks ( CvBlobs blobs, CvTracks tracks, double thDistance, int thInactive ) : void
blobs	CvBlobs	List of blobs.
tracks	CvTracks	List of tracks.
thDistance	double	Max distance to determine when a track and a blob match.
thInactive	int	Max number of frames a track can be inactive.
Результат	void

UpdateTracks() публичный статический Метод

Updates list of tracks based on current blobs.

Tracking based on: A. Senior, A. Hampapur, Y-L Tian, L. Brown, S. Pankanti, R. Bolle. Appearance Models for Occlusion Handling. Second International workshop on Performance Evaluation of Tracking and Surveillance Systems & CVPR'01. December, 2001. (http://www.research.ibm.com/peoplevision/PETS2001.pdf)

public static UpdateTracks ( CvBlobs blobs, CvTracks tracks, double thDistance, int thInactive, int thActive ) : void
blobs	CvBlobs	List of blobs.
tracks	CvTracks	List of tracks.
thDistance	double	Max distance to determine when a track and a blob match.
thInactive	int	Max number of frames a track can be inactive.
thActive	int	If a track becomes inactive but it has been active less than thActive frames, the track will be deleted.
Результат	void

WriteContourPolygonCsv() публичный статический Метод

Write a contour to a CSV (Comma-separated values) file.

public static WriteContourPolygonCsv ( CvContourPolygon polygon, string filename ) : void
polygon	CvContourPolygon	Polygon contour.
filename	string	File name.
Результат	void

WriteContourPolygonSvg() публичный статический Метод

Write a contour to a SVG file.

public static WriteContourPolygonSvg ( CvContourPolygon polygon, string fileName ) : void
polygon	CvContourPolygon	Polygon contour.
fileName	string	File name.
Результат	void

WriteContourPolygonSvg() публичный статический Метод

Write a contour to a SVG file.

public static WriteContourPolygonSvg ( CvContourPolygon polygon, string fileName, Scalar stroke, Scalar fill ) : void
polygon	CvContourPolygon	Polygon contour.
fileName	string	File name.
stroke	Scalar	Stroke color (black by default).
fill	Scalar	Fill color (white by default).
Результат	void