Where does ScewSweep live in the IronOCR API?

ScewSweep is a value-type struct in the DynamicTesseract namespace, shipped in IronOcr.dll. It derives from System.ValueType, exposes the read-only Range, Delta, and Reduction values, and offers a Default static configuration for the deskew estimator.

What do the Range, Delta, and Reduction values control in C#?

Range is the span of angles the deskew search covers in degrees, Delta is the step between candidate angles, and Reduction is the downscaling factor used while testing. Widen Range for heavily tilted scans and shrink Delta for a more precise angle estimate.

Class ScewSweep

Inheritance

System.Object

ScewSweep

Namespace: DynamicTesseract

Assembly: IronOcr.dll

Syntax

public sealed class ScewSweep : ValueType

Tuning how IronOCR searches for a page's skew angle runs through ScewSweep, the small settings record that drives the deskew estimation. It bundles the parameters that decide how wide and how finely the estimator hunts for the tilt that best straightens a scan, so a project can trade detection speed against precision.

Three read-only values define a sweep. Range is the span of angles searched in degrees, Delta is the step between candidate angles within that span, and Reduction is the downscaling factor applied while testing, where a larger reduction speeds the search on big images. The Default static value supplies a balanced configuration, and the DefaultRange, DefaultDelta, and DefaultReduction constants expose its individual settings for reference. The constructor takes the same three parameters with those defaults, so a custom sweep widens Range for badly tilted input or shrinks Delta for a finer angle estimate. The orientation correction how-to covers straightening a skewed page.

Constructors

ScewSweep(Int32, Single, Single)

Declaration

public ScewSweep(int reduction = 4, float range = 7F, float delta = 1F)

Parameters

Type	Name	Description
System.Int32	reduction
System.Single	range
System.Single	delta

Fields

Default

Declaration

public static ScewSweep Default

Field Value

Type	Description
ScewSweep

DefaultDelta

Declaration

public const float DefaultDelta = 1F

Field Value

Type	Description
System.Single

DefaultRange

Declaration

public const float DefaultRange = 7F

Field Value

Type	Description
System.Single

DefaultReduction

Declaration

public const int DefaultReduction = 4

Field Value

Type	Description
System.Int32

Properties

Delta

Declaration

public float Delta { get; }

Property Value

Type	Description
System.Single

Range

Declaration

public float Range { get; }

Property Value

Type	Description
System.Single

Reduction

Declaration

public int Reduction { get; }

Property Value

Type	Description
System.Int32