SetRasterImage Method

void SetRasterImage( 
   RasterImage image
)

'Declaration
 
Sub SetRasterImage( _
   ByVal image As RasterImage _
) 

'Usage
 
Dim instance As IOcrPage
Dim image As RasterImage
 
instance.SetRasterImage(image)

void SetRasterImage( 
   RasterImage image
)

- (BOOL)setRasterImage:(LTRasterImage*)image
                 error:(NSError**)outError;
            

public void setRasterImage(RasterImage image)

function Leadtools.Forms.Ocr.IOcrPage.SetRasterImage( 
   image 
)

void SetRasterImage( 
   RasterImage^ image
) 

Parameters

image

A Leadtools.RasterImage object that contains the image data that will be copied into this IOcrPage.

Once you add a page to an OCR document, the image data used to create the page is copied and stored inside the engine even if the original object used to create the page was a Leadtools.RasterImage object. To get a Leadtools.RasterImage that represents this page, use GetRasterImage.

The Leadtools.RasterImage object that the GetRasterImage method returns contains a copy of the page image data. Any modifications you make to the Leadtools.RasterImage object will not affect the page. To update the page image data, you must call SetRasterImage. Since the Leadtools.RasterImage object is a copy, you must dispose it by calling its RasterImage.Dispose method once you are done using it.

Once you obtain a Leadtools.RasterImage object for this page, you can use it with other parts of LEADTOOLS, for example, you can set it in the Leadtools.WinForms.RasterImageViewer or Leadtools.WinForms.RasterPictureBox controls for viewing inside your Windows Forms-based application. You can also perform your own image processing on the page as follows:

// Flip the 2nd page added to the OCR document // Get the page (index is zero-based) IOcrPage page = ocrDocument.Pages[1]; // Get a RasterImage object that represents this page Leadtools.RasterImage image = page.GetRasterImage(); // Flip it vertically Leadtools.ImageProcessing.FlipCommand flip = new Leadtools.ImageProcessing.FlipCommand(); flip.Horizontal = false; flip.Run(image); // Set it back into the page page.SetRasterImage(image); // Dispose the image image.Dispose();

You can also get a Leadtools.RasterImage object representation of a page with the IOcrPageCollection.ExportPage method.

The Leadtools.RasterImage object returned from the GetRasterImage method will contain one page only. To get a multi-page Leadtools.RasterImage object containing the image data of all or a specific range of the pages added to the OCR document, you can either create a Leadtools.RasterImage from the first then loop through the pages of the document and add the returned Leadtools.RasterImage objects to the first object with the RasterImage.AddPage method. Or you can use the IOcrPageCollection.ExportPages methods.

Target Platforms

Reference

IOcrPage Interface
IOcrPage Members
GetRasterImage
IOcrPageCollection Interface
IOcrZoneCollection Interface
OcrZone Structure
Programming with the LEADTOOLS .NET OCR