Question

Image Compression

Asked by: TheGD

Can any body suggest me a ready made source code for Image Compression in .net most preferably in C Sharp supporting a wide range of formats with high speed. I shall be greatful.

Thanks.

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Asked On
2008-02-06 at 09:34:35ID23141971
Tags

.NET

,

C Sharp

,

C#

,

Image Compression

Topics

Visual Studio

,

.Net Editors & IDEs

,

Microsoft Visual C#.Net

Participating Experts
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Answers

 

by: J1H1W1Posted on 2008-02-06 at 15:53:32ID: 20836928

.Net supports JPEG, PNG and GIF compression.  The actual compression routines are written natively in C and ASM.  I don't think there are any compression routines written in C#.  Look at the Image.Save methods.  If they don't do what you want, could you clarify your request.

 

by: raja_mduPosted on 2008-02-06 at 22:54:24ID: 20838763

.net 3.0/wpf supports jpeg compression
here is sample code

           int width = 128;
            int height = width;
            int stride = width / 8;
            byte[] pixels = new byte[height * stride];
 
            // Define the image palette
            BitmapPalette myPalette = BitmapPalettes.Halftone256;
 
            // Creates a new empty image with the pre-defined palette
            BitmapSource image = BitmapSource.Create(
                width,
                height,
                96,
                96,
                PixelFormats.Indexed1,
                myPalette,
                pixels,
                stride);
 
            FileStream stream = new FileStream("new.jpg", FileMode.Create);
            JpegBitmapEncoder encoder = new JpegBitmapEncoder();
            encoder.QualityLevel = 30;
            encoder.Frames.Add(BitmapFrame.Create(image));
            encoder.Save(stream);
                                              
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by: TheGDPosted on 2008-02-07 at 08:47:44ID: 20842395

More precisely I shall require a function, that shall take image as input, but image wont be a file rather it would be in the form of array or something similer, then the function shall return the image in compressed form, this time also in the form of array or something similer.

Thanks.

 

by: j_s_kelleyPosted on 2009-06-24 at 12:53:24ID: 24705055

I have used Pegasus Imaging in the past and their tools are rock solid.  A bit pricey but if you need the flexibility and speed, they are good.

http://www.accusoft.com/

 

by: snoyPosted on 2009-11-12 at 12:59:32ID: 25808861

don't forge to add the reference to System.core in order to use System.Windows.Media.Imaging and System.IO to use the FileStream

20120131-EE-VQP-002

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