在.NET 2.0中将位图转换为一个多页TIFF图像

从第一个位图开始,将其放入图像对象中

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

将位图以tiff格式保存到内存中

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

Image tiff = Image.FromStream(byteStream)

准备编码器:

var encoderInfo = ImageCodecInfo.GetImageEncoders().First(i => i.MimeType == "image/tiff");

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

tiff.Save(sOutFilePath, encoderInfo, encoderParams);

对于后续页面,请准备编码器:

EncoderParameters EncoderParams = new EncoderParameters(2);
EncoderParameter SaveEncodeParam = new EncoderParameter(
     Encoder.SaveFlag, 
     (long)EncoderValue.FrameDimensionPage);
EncoderParameter CompressionEncodeParam = new EncoderParameter(
     Encoder.Compression, (long)EncoderValue.CompressionNone);
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。

在谷歌上搜索了一段时间后发现了这篇文章。我尝试了a'b'c'd'e'f'g'h在帖子中的代码,但那对我不起作用。也许,我做得不对。

Adding frames to a Multi-Frame TIFF .

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 remaining 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);

巫术
公认的答案有点模糊。
以下是完整的工作代码:

public class MultiPageTiff
{


    private static System.Drawing.Imaging.ImageCodecInfo GetEncoderInfo(string mimeType)
    {
        System.Drawing.Imaging.ImageCodecInfo[] encoders =
            System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders();

        if (encoders != null)
        {
            for (int i = 0; i < encoders.Length; i++)
            {
                if (encoders[i].MimeType == mimeType)
                {
                    return encoders[i];
                } // End if (encoders[i].MimeType == mimeType) 
            } // Next i 

        } // End if (encoders != null) 

        return null;
    } // End Function GetEncoderInfo 


    public static System.Drawing.Image Generate(string[] filez)
    {
        System.Drawing.Image multiPageFile = null;
        byte[] ba = null;


        System.Drawing.Imaging.ImageCodecInfo tiffCodec = GetEncoderInfo("image/tiff");


        using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
        {
            for (int i = 0; i < filez.Length; ++i)
            {
                using (System.Drawing.Image inputImage = System.Drawing.Image.FromFile(filez[i]))
                {

                    using (System.IO.MemoryStream byteStream = new System.IO.MemoryStream())
                    {
                        inputImage.Save(byteStream, System.Drawing.Imaging.ImageFormat.Tiff);

                        if (i == 0)
                        {
                            multiPageFile = System.Drawing.Image.FromStream(byteStream);
                            multiPageFile = SaveImages(tiffCodec, ms, multiPageFile, null);
                        }
                        else
                        {

                            using (System.Drawing.Image tiffImage = System.Drawing.Image.FromStream(byteStream))
                            {
                                multiPageFile = SaveImages(tiffCodec, ms, tiffImage, multiPageFile);
                            } // End Using tiffImage 

                        }
                    } // End Using byteStream 

                } // End Using inputImage 

            } // Next i 

            ba = ms.ToArray();
        } // End Using ms 

        System.IO.File.WriteAllBytes(@"d:\mytiff.tiff", ba);

        //if (multiPageFile != null)
        //{
        //    multiPageFile.Dispose();
        //    multiPageFile = null;
        //}

        return multiPageFile;
    }


    private static System.Drawing.Image SaveImages(
          System.Drawing.Imaging.ImageCodecInfo tiffCodec
        , System.IO.MemoryStream outputStream
        , System.Drawing.Image tiffImage, System.Drawing.Image firstImage)
    {


        using (System.Drawing.Imaging.EncoderParameters encParameters =
              new System.Drawing.Imaging.EncoderParameters(3))
        {

            if (firstImage == null)
            {
                encParameters.Param[0] = new System.Drawing.Imaging.EncoderParameter(
                    System.Drawing.Imaging.Encoder.SaveFlag
                    , (long)System.Drawing.Imaging.EncoderValue.MultiFrame // 18L 
                );
            }
            else
            {
                encParameters.Param[0] = new System.Drawing.Imaging.EncoderParameter(
                    System.Drawing.Imaging.Encoder.SaveFlag
                    , (long)System.Drawing.Imaging.EncoderValue.FrameDimensionPage // 23L
                );
            }

            encParameters.Param[1] = new System.Drawing.Imaging.EncoderParameter(
                System.Drawing.Imaging.Encoder.ColorDepth, 24L
            );


            encParameters.Param[2] = new System.Drawing.Imaging.EncoderParameter(
                System.Drawing.Imaging.Encoder.Compression
                , (long)System.Drawing.Imaging.EncoderValue.CompressionLZW
            );


            if (firstImage == null)
            {
                firstImage = tiffImage;

                ((System.Drawing.Bitmap)tiffImage).SetResolution(96, 96);
                firstImage.Save(outputStream, tiffCodec, encParameters);
            }
            else
            {
                ((System.Drawing.Bitmap)tiffImage).SetResolution(96, 96);

                firstImage.SaveAdd(tiffImage, encParameters);
            }

            if (encParameters.Param[0] != null)
                encParameters.Param[0].Dispose();

            if (encParameters.Param[1] != null)
                encParameters.Param[1].Dispose();

            if (encParameters.Param[2] != null)
                encParameters.Param[2].Dispose();

        } // End Using encParameters 

        return firstImage;
    }


}

有用的话题。谢谢你的信息。我需要从base64编码字符串数组中缝合多页图像。这是我根据本文中的信息整理的。我不太明白为什么我必须创建一个明确指定图像格式的内存流,但这就是最终的工作,如果有更好的方法来处理这个问题,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);
        }
    }   

在处理和创建标准格式的文件方面,我不喜欢微软的记录,我建议使用ImageMagick,它是一个.Net库,以 MagickNet http://midimick.com/magicknet/ 目前有一个间谍软件弹出窗口,我已通知网站所有者)。

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;
        }
    }
}

以下是如何在vb.net中执行此操作:

Imports System.Drawing.Imaging

Sub CreateTiff(sOutTiffFile As String, sInFile1 As String, sInFile2 As String)
    Dim bitmap As Bitmap = Image.FromFile(sInFile1)
    Dim byteStream As MemoryStream = New MemoryStream()
    bitmap.Save(byteStream, System.Drawing.Imaging.ImageFormat.Tiff)

    Dim tiff As Image = Image.FromStream(byteStream)

    Dim oParams As EncoderParameters = New EncoderParameters(2)
    oParams.Param(0) = New EncoderParameter(Imaging.Encoder.Compression, EncoderValue.CompressionCCITT4)
    oParams.Param(1) = New EncoderParameter(Imaging.Encoder.SaveFlag, EncoderValue.MultiFrame)
    tiff.Save(sOutTiffFile, GetEncoderInfo("image/tiff"), oParams)

    'Next Page
    Dim bitmap2 As Bitmap = Image.FromFile(sInFile2)
    oParams.Param(1) = New EncoderParameter(Imaging.Encoder.SaveFlag, EncoderValue.FrameDimensionPage)
    tiff.SaveAdd(bitmap2, oParams)

    'Flush 
    Dim oFlushParams As EncoderParameters = New EncoderParameters(1)
    oFlushParams.Param(0) = New EncoderParameter(Imaging.Encoder.SaveFlag, EncoderValue.Flush)
    tiff.SaveAdd(oFlushParams)
End Sub

Private Function GetEncoderInfo(mimeType As String) As System.Drawing.Imaging.ImageCodecInfo
    Dim encoders = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()
    For i As Integer = 0 To encoders.Length - 1
        If encoders(i).MimeType = mimeType Then
            Return encoders(i)
        End If
    Next
    Return Nothing
End Function