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ExtractBlobs_Dynamic

Header:	AVL.h
Namespace:	avl
Module:	FoundationBasic

Segments an image into blobs by dynamic thresholding.

Syntax

void avl::ExtractBlobs_Dynamic
(
	const avl::Image& inImage,
	atl::Optional<const avl::ShapeRegion&> inRoi,
	atl::Optional<const avl::CoordinateSystem2D&> inRoiAlignment,
	const avl::DynamicThresholdParams& inThresholdParams,
	const avl::RegionProcessingParams& inRegionProcessingParams,
	const avl::BlobSplittingParams& inBlobSplittingParams,
	atl::Array<avl::Region>& outBlobs,
	atl::Array<int>& diagBlobAreas,
	avl::Region& diagBaseRegion
)

Parameters

Name	Type	Default	Description
inImage	const Image&		Image from which blobs are extracted
inRoi	Optional<const ShapeRegion&>	NIL	Range of pixels to be processed
inRoiAlignment	Optional<const CoordinateSystem2D&>	NIL	Adjusts the region
inThresholdParams	const DynamicThresholdParams&		Parameters for dynamic thresholding
inRegionProcessingParams	const RegionProcessingParams&		Parameters for opening and closing of a region
inBlobSplittingParams	const BlobSplittingParams&		Parameters for splitting region into blobs
outBlobs	Array<Region>&		Blobs extracted from the input image
diagBlobAreas	Array<int>&		Areas of extracted blobs
diagBaseRegion	Region&		Region of pixels right after thresholding

Description

This filter can be used to quickly segment an image with uneven illumination. It performs a series of operations on inImage:

image is thresholded by ThresholdToRegion_Dynamic using parameters from inThresholdParams
resulting region is opened and then closed by OpenRegion and CloseRegion using parameters from inRegionProcessingParams
resulting region is split into blobs by SplitRegionIntoBlobs using parameters from inBlobSplittingParams

Examples

ExtractBlobs_Dynamic performed on the sample image with inThresholdParams.MaxRelativeValue = -5.0 and inRegionProcessingParams.ClosingRadius = 3

Errors

List of possible exceptions: