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AVL.ExtractBlobs_DoG

Segments an image into blobs by thresholding Difference of Gaussians.

Namespace:AvlNet
Assembly:AVL.NET.dll

Syntax

C++
C#
 
public static void ExtractBlobs_DoG
(
	AvlNet.Image inImage,
	NullableRef<AvlNet.ShapeRegion> inRoi,
	AvlNet.CoordinateSystem2D? inRoiAlignment,
	float inStdDev,
	float inStdDevRatio,
	float inKernelRelativeSize,
	AvlNet.IntensityThresholdParams inThresholdParams,
	AvlNet.RegionProcessingParams inRegionProcessingParams,
	AvlNet.BlobSplittingParams inBlobSplittingParams,
	IList<AvlNet.Region> outBlobs
)

Parameters

Name Type Range Default Description
inImageAvlNet.ImageImage from which blobs are extracted.
inRoiAvlNet.NullableRef<AvlNet.ShapeRegion>Range of pixels to be processed. Default value: atl::NIL.
inRoiAlignmentAvlNet.CoordinateSystem2D?Adjusts the region. Default value: atl::NIL.
inStdDevfloat<0.0f, INF>3.0fSmoothing standard deviation for the smaller Gaussian kernel. Default value: 3.0f.
inStdDevRatiofloat<1.0f, INF>1.6fDefines how many times larger is the second Gaussian kernel. Default value: 1.6f.
inKernelRelativeSizefloat<0.0f, 3.0f>3.0fA multiple of the standard deviation determining the size of the Gaussian kernel. Default value: 3.0f.
inThresholdParamsAvlNet.IntensityThresholdParamsParameters for thresholding an image.
inRegionProcessingParamsAvlNet.RegionProcessingParamsParameters for opening and closing of a region.
inBlobSplittingParamsAvlNet.BlobSplittingParamsParameters for splitting region into blobs.
outBlobsSystem.Collections.Generic.IList<AvlNet.Region>Blobs extracted from the input image.

Description

This filter can be used to quickly segment an image by thresholding Difference of Gaussians. It performs a series of operations on inImage:

Examples

ExtractBlobs_DoG performed on the sample image with inStdDev = 6.0 and inThresholdParams.MaxIntensity = -4.0.

Errors

List of possible exceptions:

Error type Description
DomainError Region exceeds an input image in ExtractBlobs_DoG.

Function Overrides

See also