You are here: Start » AVL.NET » AVL.ScanExactlyNStripes(AvlNet.Image, AvlNet.ScanMap, AvlNet.StripeScanParams, int, AvlNet.Selection, float, float?, AvlNet.LocalBlindness, AvlNet.Stripe1D[], AvlNet.Gap1D[], AvlNet.Profile, AvlNet.Profile)

AVL.ScanExactlyNStripes(AvlNet.Image, AvlNet.ScanMap, AvlNet.StripeScanParams, int, AvlNet.Selection, float, float?, AvlNet.LocalBlindness, AvlNet.Stripe1D[], AvlNet.Gap1D[], AvlNet.Profile, AvlNet.Profile)

Locates a specified number of multiple pairs of opposite edges across a given path.

Namespace:	AvlNet
Assembly:	AVL.NET.dll

Syntax


public static void ScanExactlyNStripes(
	AvlNet.Image inImage,
	AvlNet.ScanMap inScanMap,
	AvlNet.StripeScanParams inStripeScanParams,
	int inStripeCount,
	AvlNet.Selection inStripeSelection,
	float inMinGapWidth,
	float? inMaxGapWidth,
	AvlNet.LocalBlindness inLocalBlindness,
	out AvlNet.Stripe1D[] outStripes,
	out AvlNet.Gap1D[] outGaps,
	out AvlNet.Profile diagBrightnessProfile,
	out AvlNet.Profile diagResponseProfile
)

Parameters

inImage: Type: AvlNet.Image
Input image
inScanMap: Type: AvlNet.ScanMap
Data precomputed with CreateScanMap
inStripeScanParams: Type: AvlNet.StripeScanParams
Parameters controlling the stripe extraction process
inStripeCount: Type: System.Int32
Number of stripes to be found
inStripeSelection: Type: AvlNet.Selection
Selection mode of the resulting stripes
inMinGapWidth: Type: System.Single
Minimal distance between consecutive stripes
inMaxGapWidth: Type: System.Nullable<System.Single>
Maximal distance between consecutive stripes, or null.
inLocalBlindness: Type: AvlNet.LocalBlindness
Defines conditions in which weaker edges can be detected in the vicinity of stronger edges, or null.
outStripes: Type: AvlNet.Stripe1D
Found stripes
outGaps: Type: AvlNet.Gap1D
Distances between consecutive stripes
diagBrightnessProfile: Type: AvlNet.Profile
Extracted image profile
diagResponseProfile: Type: AvlNet.Profile
Profile of the edge (derivative) operator response

Description

The operation scans the image using inScanMap previously generated from a scan path and finds a set of inStripeCount consecutive stripes (i.e. pairs of opposite-polarity edges running across the path). If no subset (of inStripeCount elements) of detected edge pairs meets the requirements of inStripeScanParams.stripePolarity, inStripeScanParams.minMagnitude, inStripeScanParams.minStripeWidth and inMinGapWidth then the outputs are set to NIL.

Note that in case of a scan path which is closed, the parameters controlling the distances between consecutive found objects do not control the distance between the first and the last of the found objects (counting from the beginning of the scan path).

Examples

ScanExactlyNStripes locates the edge pairs using a scan map representing the scan path above (inStripeCount = 2, inStripeScanParams.stripePolarity = Dark).

Remarks

For more information about local coordinate systems please refer to the following article.