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public TwainColorScheme ColorScheme { get; set; }
Gets or sets a value that indicates the color space in which the compressed components are stored. Only spaces supported by the source for TwainCapabilityType.ImageJpegPixelType are valid. This property is updated by calling the GetJpegCompression method. To set the JPEG Compression options, set this property and the other TwainJpegCompression properties and call the SetJpegCompression method.
For more information, refer to Using JPEG Compression For A TWAIN Source. For more information about TW_JPEGCOMPRESSION, refer to the TWAIN specification.
using Leadtools;using Leadtools.Twain;public void GetJpegCompressionExample(IntPtr parent){TwainSession session = new TwainSession();session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);string jpegdata;try{TwainJpegCompression twainJpeg = session.GetJpegCompression(false);int[] quantMap = twainJpeg.GetQuantizationMap();int[] haffmanMap = twainJpeg.GetHuffmanMap();TwainMemoryData[] quantTable = twainJpeg.GetQuantizationTable();TwainMemoryData[] haffmanDC = twainJpeg.GetHuffmanDC();TwainMemoryData[] haffmanAC = twainJpeg.GetHuffmanAC();jpegdata = String.Format(@"Color Space = {0}\nQuantMap = {1}\nGetHuffmanMap = {2}\nGetQuantTable Flags = {3}\nGetQuantTable Length = {4}\nGetQuantTable Data = {5}\nGetHuffmanDC Flags = {6}\nGetHuffmanDC Data= {7}\nGetHuffmanAC Flags = {8}\nGetHuffmanAC Data = {9}\n",twainJpeg.ColorScheme,quantMap[0],haffmanMap[0],quantTable[0].Flags,quantTable[0].Length,quantTable[0].Data,haffmanDC[0].Flags,haffmanDC[0].Data,haffmanAC[0].Flags,haffmanAC[0].Data);MessageBox.Show(jpegdata);}catch (Exception ex){MessageBox.Show(ex.Message);}session.Shutdown();}