- MRC engine: improved quality and compression rate of produced documents. - GdPictureDocumentConverter: new method SaveAsDOCX(). - GdPictureDocumentConverter: new property DocXImageQuality. - GdPictureImaging: new method SetPixelArrayByteBGR(). - Improved PDF, DOCX and RTF rasterizers. - Improved 2...

- MRC engine: improved quality and compression rate of produced documents.
- Dramatically improved 1D barcode reader accuracy, especially with low quality images.
- Battery of minor bug fixes.

- MRC engine: improved quality and compression rate of produced documents. - GdPicturePDF: new method GetPageTextWithCoordsEx(). - Improved OCR speed, especially with document having lot of content. - Improved 2D barcode reader accuracy. - Improved DOCX rasterizer. - Improved PDF text extraction. - ...

- MRC engine: improved quality and compression rate of produced documents.
- Improved 2D barcode recognition speed and accuracy.
- Battery of minor bug fixes.

- Implemented a new adaptive file caching mechanism into the toolkit. - Improved PDF rasterizer. - Improved MRC engine compression rate and quality of produced documents. - Improved 2D barcode reader accuracy. - GdPictureOCR: new property EnableVigorousDespeckle. - GdPictureDocumentUtilities: new me...

- Added support for reading and writing Aztec Codes. - Improved the MRC engine compression rate, quality and speed. - GdPicturePDF: new method SetMRCPreserveSmoothing(). - GdPictureSegmenter: new method GetBlockType(). - GdPictureImaging: new method BarcodeAztecReaderClear(). - GdPictureImaging: new...

- Improved MRC engine.
- DOCX rasterizer: Fixed a number of issues related to tabs, lists and indentation.
- Improved PDF page normalization feature.
- Battery of minor bug fixes.

- GdPicturePDF: new method SetMRCImageBackgroundResolution().
- Improved MRC engine: produced output quality and compression rate.
- Improved DOCX and PDF rendering engines.
- Improved PDF/OCR generation (accuracy and memory usage).
- Battery of minor bug fixes.

- GdPicturePDF: new overload FormFieldHasBorderColor(). - GdPicturePDF: new overload GetFormFieldBorderColor(). - GdPicturePDF: new overload SetFormFieldBorderColor(). - GdPicturePDF: new overload SetFormFieldNoBorderColor(). - GdPicturePDF: new overload GetFormFieldBorderStyle(). - GdPicturePDF: ne...

- Improved 1D barcode reader accuracy.
- Improved MRC engine: speed, compression rate, output quality.
- Battery of minor bug fixes.

- Dramatically improved quality of produced documents by the MRC engine.
- Improved OCR accuracy & speed.
- Improved DXF rasterizer.
- Improved PDF/A generator.
- Battery of minor bug fixes.

Hi,

Your approach is not correct. What I suggest is to rasterize the image in a new bitmap, then convert the rasterized bitmap to grayscale.

Please let me know if you need further information.

WIth best regards,

Hi, I think the best option is to draw the watmermak from the server side. Just catch the PageTransferReady event, then draw your watermark on the provided image (see imageID parameter). http://www.docuvieware.com/guides/aspnet/webframe.html#GdPicture.NET.14.WEB.DocuVieware~GdPicture14.WEB.DocuViewa...

- GdPicturePDF: new overload GetFormFieldCheckBoxStyle()
- GdPicturePDF: new overload SetFormFieldCheckBoxStyle()
- Improved MRC engine (compression rate and output quality).
- Improved DXF rasterizer.
- Improved DOCX rendering speed.
- Battery of minor bug fixes.

- GdPicturePDF: new method BeginXObjectForm. - GdPicturePDF: new method EndXObjectForm. - GdPicturePDF: new method DrawXObjectForm. - DocuVieware: new JavaScript function: GetAnnotPropertiesValues() - Improved PDF generation speed. - Improved DXF rasterizer. - Improved MRC engine (compression rate a...