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Leadtools.Forms.Ocr Assembly > Leadtools.Forms.Ocr Namespace > IOcrPageCollection Interface > InsertDib Method : InsertDib(Int32,IBuffer,OcrProgressCallback) Method |
'Declaration
Overloads Function InsertDib( _ ByVal pageIndex As Integer, _ ByVal dib As IBuffer, _ ByVal callback As OcrProgressCallback _ ) As IOcrPage
'Usage
Dim instance As IOcrPageCollection Dim pageIndex As Integer Dim dib As IBuffer Dim callback As OcrProgressCallback Dim value As IOcrPage value = instance.InsertDib(pageIndex, dib, callback)
This method will insert a device independent bitmap (DIB) stored in an unmanaged memory pointer to the OCR document.
You can use the OcrProgressCallback to show the operation progress or to abort it. For more information and an example, refer to OcrProgressCallback.
The LEADTOOLS OCR engine supports pages of dots per inch (DPI) values of 150 and greater. If you try to add a page with a DPI of less than 150 then the engine might be able to recognize any data from this page.
Note: The value of the "Recognition.ShareOriginalImage" (only supported by the Advantage OCR engine) setting is not used when calling this method. The engine loads the image(s) and sets them in the pages internally. The original image reference can be obtained from the page using IOcrPage.GetRasterImage(OcrPageType.Original). Sharing the original image minimizes the memory used during OCR operations.
This member only works with memory-based documents and will throw an exception otherwise. For more information, refer to IOcrDocumentManager.CreateDocument and Programming with the LEADTOOLS .NET OCR.