LEADTOOLS OCR (Leadtools.Forms.Ocr assembly)

IsInverted Method

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Gets a value that indicate whether this IOcrPage is inverted.
Syntax
bool IsInverted()
'Declaration
 
Function IsInverted() As Boolean
'Usage
 
Dim instance As IOcrPage
Dim value As Boolean
 
value = instance.IsInverted()
bool IsInverted()
- (BOOL)isInverted;
public boolean isInverted()
function Leadtools.Forms.Ocr.IOcrPage.IsInverted()
bool IsInverted(); 

Return Value

true if this IOcrPage is inverted; otherwise, false.
Remarks

You can use this method to detect if the page is inverted (has white text over black background). This method will work on the processing version of the image inside the page (OcrPageType.Processing).

Use AutoPreprocess with OcrAutoPreprocessPageCommand.Invert to automatically invert 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 inverted, IsInverted will return true, if you call AutoPreprocess on the page, all subsequent calls to IsInverted will return false since the image is no inverted. Hence, you must use IsInverted before calling AutoPreprocess.

Example
For an example, refer to AutoPreprocess.
Requirements

Target Platforms

See Also

Reference

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

 

 


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IsInverted requires an OCR module license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features