在.NET 2.0中将位图转换为一个多页TIFF图像

Question

如何将位图数组转换为TIFF格式的全新图像，将所有位图添加为此新的tiff图像中的帧？

使用.NET 2.0。

Answer 1

开始用它放入一个Image对象

Bitmap bitmap = (Bitmap)Image.FromFile(file); 

保存位图存储为TIFF

MemoryStream byteStream = new MemoryStream(); 
bitmap.Save(byteStream, ImageFormat.Tiff); 

认沽TIFF文件到另一个Image对象

Image tiff = Image.FromStream(byteStream) 

第一的位图准备编码器：

ImageCodecInfo encoderInfo = GetEncoderInfo("image/tiff"); 

EncoderParameters encoderParams = new EncoderParameters(2); 
EncoderParameter parameter = new EncoderParameter(
    Encoder.Compression, (long)EncoderValue.CompressionCCITT4); 
encoderParams.Param[0] = parameter; 
parameter = new EncoderParameter(Encoder.SaveFlag, 
    (long)EncoderValue.MultiFrame); 
encoderParams.Param[1] = parameter; 

保存到文件：

tiff.Save(sOutFilePath, encoderInfo, encoderParams); 

对于后续页面，准备编码器：

EncoderParameters EncoderParams = new EncoderParameters(2); 
EncoderParameter SaveEncodeParam = new EncoderParameter(
    Encoder.SaveFlag, 
    (long)EncoderValue.FrameDimensionPage); 
EncoderParameter CompressionEncodeParam = new EncoderParameter(
    Encoder.Compression, (long)EncoderValue.CompressionCCITT4); 
EncoderParams.Param[0] = CompressionEncodeParam; 
EncoderParams.Param[1] = SaveEncodeParam; 
tiff.SaveAdd(/* next image as tiff - do the same as above with memory */, EncoderParams); 

最后刷新文件：

EncoderParameter SaveEncodeParam = new EncoderParameter(
    Encoder.SaveFlag, (long)EncoderValue.Flush); 
EncoderParams = new EncoderParameters(1); 
EncoderParams.Param[0] = SaveEncodeParam; 
tiff.SaveAdd(EncoderParams); 

这应该让你开始。

Answer 2

当谈到处理和创建标准格式文件时，不是微软的记录迷，我建议使用ImageMagick，以。MagickNet的形式提供.Net库（当心，http://midimick.com/magicknet/当前有一个间谍软件弹出窗口，我已经提醒网站所有者）。

Answer 3

在Google上搜索了一下后，发现了这篇文章。我试了一下a'b'c'd'e'f'g'h'的帖子中的代码，但那对我没有用。也许，我没有做正确的事情。

在任何情况下，我发现另一篇文章保存图像到多页tiffs。这里是该帖子的链接：http://www.bobpowell.net/addframes.htm

此外，这里是代码为我工作。它应该与该帖子相同。

Encoder encoder = Encoder.SaveFlag; 
ImageCodecInfo encoderInfo = ImageCodecInfo.GetImageEncoders().First(i => i.MimeType == "image/tiff"; 
EncoderParameters encoderParameters = new EncoderParameters(1); 
encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.MultiFrame); 

// Save the first frame of the multi page tiff 
Bitmap firstImage = (Bitmap) _scannedPages[0].RawContent; 
firstImage.Save(fileName, encoderInfo, encoderParameters); 

encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.FrameDimensionPage); 

// Add the remining images to the tiff 
for (int i = 1; i < _scannedPages.Count; i++) 
{ 
    Bitmap img = (Bitmap) _scannedPages[i].RawContent; 
    firstImage.SaveAdd(img, encoderParameters); 
} 

// Close out the file 
encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.Flush); 
firstImage.SaveAdd(encoderParameters); 

Answer 4

这是multi-tiff文件的拆分操作。它就像字符串子字符串函数一样工作。图像的第一个索引将是您的MasterBitMap，您将继续将帧添加到MasterBitmap直到索引结束。

public void SaveMultiFrameTiff(int start, int end) 
    {    
     string outputFileName = "out.TIF"; 
     string inputFileName = "input.TIF";    

     try 
     {     

      Bitmap MasterBitmap = new Bitmap(inputFileName); //Start page of document(master) 
      Image imageAdd = Image.FromFile(inputFileName); //Frame Image that will be added to the master   
      Guid guid = imageAdd.FrameDimensionsList[0]; //GUID 
      FrameDimension dimension = new FrameDimension(guid); 
      // start index cannot be less than 0 and cannot be greater than frame count   
      if (start < 1 || end > MasterBitmap.GetFrameCount(dimension)) { return; }   

      EncoderParameters ep = new EncoderParameters(1); 

      //Get Image Codec Information 
      ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders(); 
      ImageCodecInfo codecInfo = codecs[3]; //image/tiff 

      //MultiFrame Encoding format 
      EncoderParameter epMultiFrame = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.MultiFrame); 
      ep.Param[0] = epMultiFrame; 
      MasterBitmap.SelectActiveFrame(dimension, start - 1); 
      MasterBitmap.Save(outputFileName, codecInfo, ep);//create master document 

      //FrameDimensionPage Encoding format 
      EncoderParameter epFrameDimensionPage = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.FrameDimensionPage); 
      ep.Param[0] = epFrameDimensionPage; 

      for (int i = start; i < end; i++) 
      { 
       imageAdd.SelectActiveFrame(dimension, i);//select next frame 
       MasterBitmap.SaveAdd(new Bitmap(imageAdd), ep);//add it to the master 
      } 

      //Flush Encoding format 
      EncoderParameter epFlush = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.Flush); 
      ep.Param[0] = epFlush; 
      MasterBitmap.SaveAdd(ep); //flush the file     
     } 
     catch (Exception ex) 
     { 
      throw ex; 
     } 
    } 
} 

Answer 5

有帮助的话题。谢谢（你的）信息。我需要从base64编码的字符串数组中拼接多页图像。这是我基于这个线程中的信息放在一起的。我不太了解为什么我必须创建一个具有明确指定的图像格式的内存流，但这是结束了工作，如果有更好的方式来处理这个请让我知道。谢谢

/// <summary> 
    /// Takes in an array of base64 encoded strings and creates a multipage tiff. 
    /// </summary> 
    /// <param name="sOutFile">file to be generated</param> 
    /// <param name="pagesbase64Array"></param> 
    private void SaevAsMultiPageTiff(string sOutFile, string[] pagesbase64Array) 
    { 
     System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.SaveFlag; 
     ImageCodecInfo encoderInfo = ImageCodecInfo.GetImageEncoders().First(i => i.MimeType == "image/tiff"); 
     EncoderParameters encoderParameters = new EncoderParameters(1); 
     encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.MultiFrame); 

     Bitmap firstImage = null; 
     try 
     { 

      using (MemoryStream ms1 = new MemoryStream()) 
      { 
       using (MemoryStream ms = new MemoryStream(Convert.FromBase64String(pagesbase64Array[0]))) 
       { 
        Image.FromStream(ms).Save(ms1, ImageFormat.Tiff); 
        firstImage = (Bitmap)Image.FromStream(ms1); 
       } 
       // Save the first frame of the multi page tiff 
       firstImage.Save(sOutFile, encoderInfo, encoderParameters); //throws Generic GDI+ error if the memory streams are not open when this is called 
      } 


      encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.FrameDimensionPage); 

      Bitmap imagePage; 
      // Add the remining images to the tiff 
      for (int i = 1; i < pagesbase64Array.Length; i++) 
      { 

       using (MemoryStream ms1 = new MemoryStream()) 
       { 
        using (MemoryStream ms = new MemoryStream(Convert.FromBase64String(pagesbase64Array[i]))) 
        { 
         Image.FromStream(ms).Save(ms1, ImageFormat.Tiff); 
         imagePage = (Bitmap)Image.FromStream(ms1); 
        } 

        firstImage.SaveAdd(imagePage, encoderParameters); //throws Generic GDI+ error if the memory streams are not open when this is called 
       } 
      } 

     } 
     catch (Exception) 
     { 
      //ensure the errors are not missed while allowing for flush in finally block so files dont get locked up. 
      throw; 
     } 
     finally 
     { 
      // Close out the file 
      encoderParameters.Param[0] = new EncoderParameter(encoder, (long)EncoderValue.Flush); 
      firstImage.SaveAdd(encoderParameters); 
     } 
    }