Hi Loïc This function "TwainSetCapCurrentNumeric" can not be called successfull as follow: // Set pixel type // Default pixel type is blackwhite TwainPixelType pixelType = TwainPixelType.TWPT_BW; for(int i = 0; i < _pixelTypeValues.Length; i++) { if((int)pictureModus == _pixelTypeValues[i]...

Hi Loïc

Im using serveral scanners like:

- plustek opticslim 500
- fujitsu fj-4120
- canon canoscan lide 200
- hp scanjet 5590
- etc.

But seems this behaviour is just available at plustek opticslim 500 scanner. Other scanners works fine.

Br, ctn

Hi Event if Twain state is 4 (TWAIN_SOURCE_OPEN) it is sometimes not possible to set the pixel type at the "TwainSetCurrentPixelType" function: setPictureConfigurationParameters(brightness=0, contrast=0, pictureModus=GREYSCALE): scanning set pixel types has been failed. twainResultCode=TWR...

Hi

Thanks. The issue has been solved.
Br, ctn

Hi I m using plustek OpticSlim500 scanner and sometimes I do get this during TwainSetImageLayout. This is my error message: scanningSetRegion(left=0, top=0, right=8.26, bottom=11.69): default scan region (inches) could not be set: defaultLeft=0, defaultTop=0, defaultRight=8.5, defaultBottom=5.509994...

Hi My understanding of right edge is "Double. Value of the right-most edge of the area to scan measured in inches. Note: ImageWidth = nRight - nLeft." There was a discussion earlier at https://www.gdpicture.com/forum/viewtopic.php?t=3814 . Code snippet how to get the values: public string ...

Hi, Please find the code snippet below: public string setImage(byte[] image) { MemoryStream ms = new MemoryStream(image, false); BitmapImage bi = new BitmapImage(); bi.BeginInit(); bi.StreamSource = ms; bi.EndInit(); string result = ""; result += " sizePixels=" + TypeUtil.objectT...

Dear all Why don't I get the exact resolution of the a pic which I have scanned? E.g. Set resolution to 50 ScanningPrinting.scanningScanPreview(): byte[76430]{0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x00, 0x01, 0x01, 0x01, 0x00, 0x32, 0x00, 0x32, 0x00, 0x00, ...} sizePixels=416,5...

I have performed more tests: JPEG [/b] Blackwhite (PixelType = BW(0)): ------------------------------- ScanningPrinting.scanningScanPreview(): byte[230308]{0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x00, 0x01, 0x01, 0x01, 0x00, 0x64, 0x00, 0x64, 0x00, 0x00, ...} sizePixels=832,1169...

Dear all I have the following issue: If I scan a image and use JPEG compression I get different right edge values, for instance: - Scan resolution 150, PixelType = RGB (2), Compression = JPEG --> result of right edge: 8.266666666666667 - Scan resolution 150, PixelType = BW (0), Compression = JPEG --...

Ok. Thank you.
Br, Toan

Hi

As I can see at my tests the minimum size of a font (e.g Arial) which ocr can recognize is around 12px. Smaller font could not be recognized correctly.
Is there a possibility to support smaller size than 12px?

Thank you
Br,
Toan

Hi

I thought that only recognized words in the expected language will be returned.

Br, ctn

Hi Loïc

An email has been sent.
Thanks
Br, ctn

Attach files again.
Br, ctn

Seems that "Upload attachment" does not work.
Br, ctn