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LocateSingleObject_Elastic


Header: AVL.h
Namespace: avl
Module: MatchingPro

Finds a single occurrence of a predefined template on an image by comparing object edges.

Applications: Detection of an object whose outlines are sharp and rigid. Often one of the first filters in a program.

Syntax

C++
C#
 
void avl::LocateSingleObject_Elastic
(
	const avl::Image& inImage,
	atl::Optional<const avl::ShapeRegion&> inSearchRegion,
	atl::Optional<const avl::CoordinateSystem2D&> inSearchRegionAlignment,
	const avl::EdgeModel_Elastic& inEdgeModel,
	avl::ElasticMatchingDetectionStrategy::Type inDetectionStrategy,
	float inEdgeThreshold,
	float inMinAspectRatio,
	float inMaxAspectRatio,
	float inMinScore,
	atl::Conditional<avl::Object2D>& outObject,
	atl::Optional<atl::Conditional<atl::Array<avl::Path>>&> outObjectEdges = atl::NIL
)

Parameters

Name Type Range Default Description
Input value inImage const Image& Image on which object occurrences will be searched
Input value inSearchRegion Optional<const ShapeRegion&> NIL Region of possible object centers
Input value inSearchRegionAlignment Optional<const CoordinateSystem2D&> NIL Adjusts the region of interest to the position of the inspected object
Input value inEdgeModel const EdgeModel_Elastic& Model of objects to be searched
Input value inDetectionStrategy ElasticMatchingDetectionStrategy::Type Fast Specifies initial candidates detection mode
Input value inEdgeThreshold float 0.01 - 10.0f Minimum strength of edges used for matching with the model
Input value inMinAspectRatio float 0.5 - 2.0 1.0f Minimum expected aspect ratio of object occurrence being found
Input value inMaxAspectRatio float 0.5 - 2.0 1.0f Maximum expected aspect ratio of object occurrence being found
Input value inMinScore float 0.0 - 1.0 0.7f Minimum score of an object occurrence
Output value outObject Conditional<Object2D>& Found object
Output value outObjectEdges Optional<Conditional<Array<Path>>&> NIL Model edges of the found object

Optional Outputs

The computation of following outputs can be switched off by passing value atl::NIL to these parameters: outObjectEdges.

Read more about Optional Outputs.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.