 | CvBlobLib Class |
Functions of cvblob library
Inheritance HierarchyNamespace: OpenCvSharp.Blob
Assembly: OpenCvSharp.Blob (in OpenCvSharp.Blob.dll) Version: 1.0.0
SyntaxThe CvBlobLib type exposes the following members.
Methods| Name | Description | |
|---|---|---|
  | BlobMeanColor |
Calculates mean color of a blob in an image.
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| CalcAngle |
Calculates angle orientation of a blob.
This function uses central moments so cvCentralMoments should have been called before for this blob. (cvAngle)
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| CalcCentroid |
Calculates centroid.
Centroid will be returned and stored in the blob structure. (cvCentroid)
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| ContourChainCodePerimeter |
Calculates perimeter of a chain code contour.
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| ContourPolygonArea |
Calculates area of a polygonal contour.
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| ContourPolygonCircularity |
Calculates the circularity of a polygon (compactness measure).
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| ContourPolygonPerimeter |
Calculates perimeter of a chain code contour.
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| ConvertChainCodesToPolygon |
Convert a chain code contour to a polygon.
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| FilterByArea |
Filter blobs by area.
Those blobs whose areas are not in range will be erased from the input list of blobs. (cvFilterByArea)
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| FilterByLabel |
Filter blobs by label.
Delete all blobs except those with label l.
|
| FilterLabels |
Draw a binary image with the blobs that have been given. (cvFilterLabels)
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| GetLabel |
Get the label value from a labeled image.
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| GreaterBlob |
Find greater blob. (cvGreaterBlob)
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| Label |
Label the connected parts of a binary image. (cvLabel)
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| LargestBlob |
Find the largest blob. (cvLargestBlob)
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| PolygonContourConvexHull |
Calculates convex hull of a contour.
Uses the Melkman Algorithm. Code based on the version in http://w3.impa.br/~rdcastan/Cgeometry/.
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| RenderBlob(LabelData, CvBlob, Mat, Mat) |
Draws or prints information about a blob.
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| RenderBlob(LabelData, CvBlob, Mat, Mat, RenderBlobsModes) |
Draws or prints information about a blob.
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| RenderBlob(LabelData, CvBlob, Mat, Mat, RenderBlobsModes, Scalar, Double) |
Draws or prints information about a blob.
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| RenderBlobs(CvBlobs, Mat, Mat) |
Draws or prints information about blobs. (cvRenderBlobs)
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| RenderBlobs(CvBlobs, Mat, Mat, RenderBlobsModes, Double) |
Draws or prints information about blobs. (cvRenderBlobs)
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| RenderContourChainCode(CvContourChainCode, Mat) |
Draw a contour.
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| RenderContourChainCode(CvContourChainCode, Mat, Scalar) |
Draw a contour.
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| RenderContourPolygon(CvContourPolygon, Mat) |
Draw a polygon.
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| RenderContourPolygon(CvContourPolygon, Mat, Scalar) |
Draw a polygon.
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| RenderTracks(CvTracks, Mat, Mat) |
Prints tracks information.
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| RenderTracks(CvTracks, Mat, Mat, RenderTracksModes) |
Prints tracks information.
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| RenderTracks(CvTracks, Mat, Mat, RenderTracksModes, Scalar, HersheyFonts, Double, Int32) |
Prints tracks information.
|
| SaveImageBlob |
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) |
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).
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| SimplifyPolygon(CvContourPolygon, Double) |
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).
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| UpdateTracks(CvBlobs, CvTracks, Double, Int32) |
Updates list of tracks based on current blobs.
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| UpdateTracks(CvBlobs, CvTracks, Double, Int32, Int32) |
Updates list of tracks based on current blobs.
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| WriteContourPolygonCsv |
Write a contour to a CSV (Comma-separated values) file.
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| WriteContourPolygonSvg(CvContourPolygon, String) |
Write a contour to a SVG file.
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| WriteContourPolygonSvg(CvContourPolygon, String, Scalar, Scalar) |
Write a contour to a SVG file.
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See Also