I am working on reading text from an image through OCR. It only supports TIFF format images.
So, I need to convert other formats to TIFF format. Can it be done? Please help by providing some references.
If you create an Image object in .NET, you can save it as a TIFF. It is one of the many ImageFormat choices at your disposal.
Example:
var png = Image.FromFile("some.png");
png.Save("a.tiff", ImageFormat.Tiff);
You'll need to include the System.Drawing assembly in your project. That assembly will give you a lot of image manipulation capabilities. Hope that helps.
Intro Note:
This answer cover the Bounty Question; which is: How do we
convert multiple files into 1 tiff? For example, let's say have pdfs,
jpegs, pngs, and I'd like to create 1 tiff out of them?
In this answer I use .net implementation of https://imagemagick.org/index.php for image manipulation and and Ghostscript for helping read an AI/EPS/PDF/PS file so we can translate it to image files both are credible and official source.
After I answered this question I got some extra question in my email asking other merging options, I have therefore extended my answer.
IMO there are 2 steps to your goal:
Install required tools for pdf conversion
Take all images including pdf formatted files from source and merge them together
in one tiff file.
1. Install tools that helps Pdf to Image conversion:
Step 1 is only required if you intend to convert AI/EPS/PDF/PS file formats. Otherwise just jump to step2.
To make it possible converting pdf to any image format, we need a library that can read pdf files and we need a tool to convert it to image type. For this purpose, we will need to install Ghostscript (GNU Affero General Public License).
Here after, we need to install ImageMagick.net for .net in Visual Studio, nuget link.
So far so good.
2. Code part
Second and Last step is we need to read files (png, jpg, bmp, pdf etc) from folder location and add each file to MagickImageCollection, then we have several options to merge use AppendHorizontally, AppendVertically, Montage or Multiple page Tiff. ImageMagick has tons of features, like resizing, resolution etc, this is just example to demonstrate merging features:
public static void MergeImage(string src, string dest, MergeType type = MergeType.MultiplePage)
{
var files = new DirectoryInfo(src).GetFiles();
using (var images = new MagickImageCollection())
{
foreach (var file in files)
{
var image = new MagickImage(file)
{
Format = MagickFormat.Tif,
Depth = 8,
};
images.Add(image);
}
switch (type)
{
case MergeType.Vertical:
using (var result = images.AppendVertically())
{
result.AdaptiveResize(new MagickGeometry(){Height = 600, Width = 800});
result.Write(dest);
}
break;
case MergeType.Horizontal:
using (var result = images.AppendHorizontally())
{
result.AdaptiveResize(new MagickGeometry(){Height = 600, Width = 800});
result.Write(dest);
}
break;
case MergeType.Montage:
var settings = new MontageSettings
{
BackgroundColor = new MagickColor("#FFF"),
Geometry = new MagickGeometry("1x1<")
};
using (var result = images.Montage(settings))
{
result.Write(dest);
}
break;
case MergeType.MultiplePage:
images.Write(dest);
break;
default:
throw new ArgumentOutOfRangeException(nameof(type), type, "Un-support choice");
}
images.Dispose();
}
}
public enum MergeType
{
MultiplePage,
Vertical,
Horizontal,
Montage
}
To run the code
public static void Main(string[] args)
{
var src = #"C:\temp\Images";
var dest1 = #"C:\temp\Output\MultiplePage.tiff";
var dest2 = #"C:\temp\Output\Vertical.tiff";
var dest3 = #"C:\temp\Output\Horizontal.tiff";
var dest4 = #"C:\temp\Output\Montage.tiff";
MergeImage(src, dest1);
MergeImage(src, dest2, MergeType.Vertical);
MergeImage(src, dest3, MergeType.Horizontal);
MergeImage(src, dest4, MergeType.Montage);
}
Here is 4 input files in C:\temp\Images:
After running the code, we get 4 new files under C:\temp\Output looks like this:
4 page Multiple Page Tiff
4 image Vertical Merge
4 image Horizontal Merge
4 image Montage Merge
Final note:
it is possible to merge multiple images to tiff using System.Drawing; and using System.Drawing.Imaging; with out using ImageMagick, but pdf does require a third party conversion library or tool, therefore I use Ghostscript and ImageMagick for C#.
ImageMagick has many features, so you can change the resolution, size of output file etc. it is well recognized library.
Disclaimer: A part of this answer is taken from my my personal web site https://itbackyard.com/how-to-convert-ai-eps-pdf-ps-to-image-file/ with source code to github.
To be covert the image in tif format.In the below example to be convert the image and set to a text box.to be see the image in text box is (.tif formate).This sources code is working.
private void btn_Convert(object sender, EventArgs e)
{
string newName = System.IO.Path.GetFileNameWithoutExtension(CurrentFile);
newName = newName + ".tif";
try
{
img.Save(newName, ImageFormat.Tiff);
}
catch (Exception ex)
{
string error = ee.Message.ToString();
MessageBox.Show(MessageBoxIcon.Error);
}
textBox2.Text = System.IO.Path.GetFullPath(newName.ToString());
}
I tested this with jpg, bmp, png, and gif. Works for single and multipage creation of tiffs. Pass it a full pathname to the file. Hope it helps someone. (extracted from MSDN)
public static string[] ConvertJpegToTiff(string[] fileNames, bool isMultipage)
{
EncoderParameters encoderParams = new EncoderParameters(1);
ImageCodecInfo tiffCodecInfo = ImageCodecInfo.GetImageEncoders()
.First(ie => ie.MimeType == "image/tiff");
string[] tiffPaths = null;
if (isMultipage)
{
tiffPaths = new string[1];
System.Drawing.Image tiffImg = null;
try
{
for (int i = 0; i < fileNames.Length; i++)
{
if (i == 0)
{
tiffPaths[i] = String.Format("{0}\\{1}.tif",
Path.GetDirectoryName(fileNames[i]),
Path.GetFileNameWithoutExtension(fileNames[i]));
// Initialize the first frame of multipage tiff.
tiffImg = System.Drawing.Image.FromFile(fileNames[i]);
encoderParams.Param[0] = new EncoderParameter(
System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.MultiFrame);
tiffImg.Save(tiffPaths[i], tiffCodecInfo, encoderParams);
}
else
{
// Add additional frames.
encoderParams.Param[0] = new EncoderParameter(
System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.FrameDimensionPage);
using (System.Drawing.Image frame = System.Drawing.Image.FromFile(fileNames[i]))
{
tiffImg.SaveAdd(frame, encoderParams);
}
}
if (i == fileNames.Length - 1)
{
// When it is the last frame, flush the resources and closing.
encoderParams.Param[0] = new EncoderParameter(
System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.Flush);
tiffImg.SaveAdd(encoderParams);
}
}
}
finally
{
if (tiffImg != null)
{
tiffImg.Dispose();
tiffImg = null;
}
}
}
else
{
tiffPaths = new string[fileNames.Length];
for (int i = 0; i < fileNames.Length; i++)
{
tiffPaths[i] = String.Format("{0}\\{1}.tif",
Path.GetDirectoryName(fileNames[i]),
Path.GetFileNameWithoutExtension(fileNames[i]));
// Save as individual tiff files.
using (System.Drawing.Image tiffImg = System.Drawing.Image.FromFile(fileNames[i]))
{
tiffImg.Save(tiffPaths[i], ImageFormat.Tiff);
}
}
}
return tiffPaths;
}
ImageMagick command line can do that easily. It is supplied on most Linux systems and is available for Mac or Windows also. See https://imagemagick.org/script/download.php
convert image.suffix -compress XXX image.tiff
or you can process a whole folder of files using
mogrify -format tiff -path path/to/output_directory *
ImageMagick supports combining multiple images into a multi-page TIFF. And the images can be of mixed types even including PDF.
convert image1.suffix1 image2.suffix2 ... -compress XXX imageN.suffixN output.tiff
You can choose from a number of compression formats or no compression.
See
https://imagemagick.org/script/command-line-processing.php
https://imagemagick.org/Usage/basics/
https://imagemagick.org/Usage/basics/#mogrify
https://imagemagick.org/script/command-line-options.php#compress
Or you can use Magick.Net for a C# interface. See https://github.com/dlemstra/Magick.NET
Main ImageMagick page is at https://imagemagick.org.
Supported formats are listed at https://imagemagick.org/script/formats.php
You can easily process your images to resize them, convert to grayscale, filter (sharpen), threshold, etc, all in the same command line.
See
https://imagemagick.org/Usage/
https://imagemagick.org/Usage/reference.html
This is how I convert images that are uploaded to a website. Changed it so it outputs Tiff files. The method input and outputs a byte array so it can easily be used in a variety of ways. But you can easily modify it.
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
public byte[] ConvertImageToTiff(byte[] SourceImage)
{
//create a new byte array
byte[] bin = new byte[0];
//check if there is data
if (SourceImage == null || SourceImage.Length == 0)
{
return bin;
}
//convert the byte array to a bitmap
Bitmap NewImage;
using (MemoryStream ms = new MemoryStream(SourceImage))
{
NewImage = new Bitmap(ms);
}
//set some properties
Bitmap TempImage = new Bitmap(NewImage.Width, NewImage.Height);
using (Graphics g = Graphics.FromImage(TempImage))
{
g.CompositingMode = CompositingMode.SourceCopy;
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.DrawImage(NewImage, 0, 0, NewImage.Width, NewImage.Height);
}
NewImage = TempImage;
//save the image to a stream
using (MemoryStream ms = new MemoryStream())
{
EncoderParameters encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 80L);
NewImage.Save(ms, GetEncoderInfo("image/tiff"), encoderParameters);
bin = ms.ToArray();
}
//cleanup
NewImage.Dispose();
TempImage.Dispose();
//return data
return bin;
}
//get the correct encoder info
public ImageCodecInfo GetEncoderInfo(string MimeType)
{
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
for (int j = 0; j < encoders.Length; ++j)
{
if (encoders[j].MimeType.ToLower() == MimeType.ToLower())
return encoders[j];
}
return null;
}
To test
var oldImage = File.ReadAllBytes(Server.MapPath("OldImage.jpg"));
var newImage = ConvertImageToTiff(oldImage);
File.WriteAllBytes(Server.MapPath("NewImage.tiff"), newImage);
I have an Android-App that takes pictures and saves them in an external storage ("DCIM/Cameras"). But the pictures appear only after restarting my handy.
Is there some kind of Update or a way around this?
My source-code from saving my image:
var dir = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDcim);
var pictures = dir.AbsolutePath + "/Camera";
string name = System.DateTime.Now.ToString("yyyyMMdd_HHmmssfff") + ".jpg";
string filePath = System.IO.Path.Combine(pictures, name);
FileStream output;
Bitmap bitmap = BitmapFactory.DecodeByteArray(imageData, 0, imageData.Length);
try
{
output = new FileStream(filePath, FileMode.Create);
bitmap.Compress(Bitmap.CompressFormat.Jpeg, 100, output);
output.Close();
//Static Class that contains an methode for MediaScannerConnection.ScanFile
MediaGalleryHelper.AddFileToGallery(name);
}
catch (System.Exception ex)
{
System.Console.WriteLine(ex.ToString());
}
You have to let the photo gallery know that a new photo has been added. You can use below code for that:
this.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + filePath)));
Where 'this' is an activity.
I want to create a PNG from a view. I am using this code:
//I instance the user control
ucFormToPrintView miViewToPrint = new ucFormToPrintView();
miViewToPrint.DataContext = ((ucFormToPrintView)CCForm).DataContext;
//I use a RenderTargetBitmap to render the user control
System.Windows.Media.Imaging.RenderTargetBitmap rtb = new System.Windows.Media.Imaging.RenderTargetBitmap(794, 1122, 72, 72, System.Windows.Media.PixelFormats.Pbgra32);
rtb.Render(miViewToPrint);
//I use an encoder to create the png
System.Windows.Media.Imaging.PngBitmapEncoder encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(rtb));
//I use a dialog to select the path where to save the png file
Microsoft.Win32.SaveFileDialog saveFileDialog = new Microsoft.Win32.SaveFileDialog();
saveFileDialog.FilterIndex = 1;
if (saveFileDialog.ShowDialog() == true)
{
using (System.IO.Stream stream = saveFileDialog.OpenFile())
{
encoder.Save(stream);
stream.Close();
System.Diagnostics.Process.Start(saveFileDialog.FileName);
}
}
The result is an empty png.
How can I create a png file from a user control?
Thank so much.
The UserControl has to be laid out at least once to be visible. You can achieve that by calling its Measure and Arrange methods.
var miViewToPrint = new ucFormToPrintView();
miViewToPrint.DataContext = ((ucFormToPrintView)CCForm).DataContext;
// layout, i.e. measure and arrange
miViewToPrint.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
miViewToPrint.Arrange(new Rect(miViewToPrint.DesiredSize));
...
if (saveFileDialog.ShowDialog() == true)
{
using (var stream = saveFileDialog.OpenFile())
{
encoder.Save(stream);
}
System.Diagnostics.Process.Start(saveFileDialog.FileName);
}
i'm a student and i am bad at programing.
I saved the images in my mysql database for each player. I created a program where I can list some soccer players from my database. When i click on a listed player in datagrid, a new window appears with the information about the player. Everything works, but now i want a picture of the selected player to be displayed on the information window from the database. Can anybody help me? My english is not the best (i'm 17) so i hope you can understand what i mean.
This is what i tried to do but i don't know how to continue. PS. It's in WPF.
MySqlCommand cmd = new MySqlCommand("SELECT Bilder FROM spieler WHERE Bilder='{8}'");
MySqlDataReader rdr1 = cmd.ExecuteReader();
try
{
conn.Open();
while (rdr1.Read())
{
// image1... I don't know what to write here
}
}
catch (Exception ex)
{
MessageBox.Show("Fehler: " + ex);
}
rdr1.Close()
Just get it using a byte[] casting beforehand:
while (rdr1.Read())
{
byte[] data = (byte[])reader[0]; // 0 is okay if you only selecting one column
//And use:
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(data))
{
Image image = new Bitmap(ms);
}
}
UPDATE:
In WPF, use the BitmapImage:
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(data))
{
var imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.StreamSource = ms;
imageSource.CacheOption = BitmapCacheOption.OnLoad;
imageSource.EndInit();
// Assign the Source property of your image
yourImage.Source = imageSource;
}
What is column's type where you hold the image?
You could try somehing like this
Image tmp = ImageConverter.ConvertFrom(rdr1.GetStream("photo"));
where photo is name of your column
I have a problem about the foreach instruction and a description for each image.
Right now, when the user selects an image from the list, the next message occurs (see image1)
What I want is to change this text with a different one for each image.
I've also created a class called WineModel and its code is posted below.
What should I do to display a different description for each image?
One of my ideas would be to create a vector like in this link and to display a different message for each image from the position of the vector.
var files = Directory.GetFiles(#".\GalleryImages");
foreach (var file in files)
{
FileInfo fileInfo = new FileInfo(file);
WineModel wineModel = new WineModel();
wineModel.Image = new Uri(file, UriKind.Relative);
wineModel.Description = file + "Ana are mere" +
Environment.NewLine + "text text text text text text text text text text text";
wineModel.Price = new Random().NextDouble();
BitmapImage bi = new BitmapImage();
bi.BeginInit();
bi.UriSource = wineModel.Image;
bi.EndInit();
var button = new KinectTileButton
{
Label = System.IO.Path.GetFileNameWithoutExtension(file),
Background = new ImageBrush(bi),
Tag = wineModel
};
this.wrapPanel.Children.Add(button);
}
http://i58.tinypic.com/nbvhu8.png
http://msdn.microsoft.com/en-us/library/ttw7t8t6.aspx