Convertir des bitmaps en une image TIFF multipage dans .NET 2.0

Question

Comment puis-je convertir un tableau de bitmaps en une toute nouvelle image au format TIFF, en ajoutant tous les bitmaps en tant que trames dans cette nouvelle image tiff?

en utilisant .NET 2.0.

Answer 1

Commencez avec le premier bitmap en le mettant dans un objet Image

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

Enregistrez le bitmap en mémoire au format tiff

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

Mettez Tiff dans un autre objet Image

Image tiff = Image.FromStream(byteStream)

Préparez les encodeurs:

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);

Enregistrer dans un fichier:

tiff.Save(sOutFilePath, encoderInfo, encoderParams);

Pour les pages suivantes, préparez les encodeurs:

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);

Enfin, videz le fichier:

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

Cela devrait vous aider à démarrer.

Answer 2

Je suis tombé sur ce post après un peu de recherche sur Google. J'ai essayé le code qui était dans le message par a'b'c'd'e'f'g'h ', mais cela n'a pas fonctionné pour moi. Peut-être que je ne faisais pas quelque chose correctement.

Dans tous les cas, j'ai trouvé un autre article qui a enregistré des images sur des tiffs multi-pages. Voici le lien vers le message: http://www.bobpowell.net/addframes.htm

Aussi, voici le code qui a fonctionné pour moi. Il devrait être identique à ce poste.

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);

Answer 3

sujet utile. Merci pour l'info. J'avais besoin d'assembler une image multipage à partir d'un tableau de chaînes encodées en base64. C'est ce que j'ai rassemblé sur la base des informations contenues dans ce fil. Je ne comprends pas très bien pourquoi je dois créer un flux de mémoire avec le format d'image spécifié explicitement, mais c'est ce qui a fini par fonctionner, s'il existe une meilleure façon de gérer cela, veuillez me le faire savoir. Merci

/// <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);
        }
    }   

Answer 4

Nécromancement
La réponse acceptée est un peu vague.
Voici le code de travail complet:

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;
    }


}

Answer 5

N'étant pas fan des antécédents de Microsoft en matière de gestion et de création de fichiers de formats standardisés, je suggère d'utiliser ImageMagick, disponible sous forme de bibliothèque .Net sous la forme MagickNet (attention, http://midimick.com/magicknet/ a actuellement un popup de spyware, j'ai alerté le propriétaire du site).

Answer 6

Voici l'opération de fractionnement du fichier multi-tiff. Cela fonctionne exactement comme la fonction de sous-chaîne de chaînes. Le premier index d'image sera votre MasterBitMap et vous continuerez à ajouter un cadre au MasterBitmap jusqu'à la fin de l'index.

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 7

Voici comment procéder sur vb.net:

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