GetRotateAngle Method

int GetRotateAngle()

'Declaration
 
Function GetRotateAngle() As Integer

'Usage
 
Dim instance As IOcrPage
Dim value As Integer
 
value = instance.GetRotateAngle()

int GetRotateAngle()

function Leadtools.Forms.Ocr.IOcrPage.GetRotateAngle()

int GetRotateAngle(); 

Return Value

This method will return one of the following values:

Use AutoPreprocess with OcrAutoPreprocessPageCommand.Rotate to automatically rotate the page image prior to calling Recognize or RecognizeText. This could enhance the quality of the image before starting its recognition.

If the image is rotated, GetRotateAngle will return the angle required to fix the orientation of the page, if you call AutoPreprocess on the page, all subsequent calls to GetRotateAngle will return 0 since the image is no rotated. Hence, you must use GetRotateAngle before calling AutoPreprocess.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IOcrPage Interface
IOcrPage Members
AutoPreprocess Method
GetDeskewAngle Method
IsInverted Method
Recognize Method
OcrAutoPreprocessPageCommand Enumeration
IOcrPageCollection Interface
IOcrZoneCollection Interface
OcrZone Structure
Programming with the LEADTOOLS .NET OCR