Microsoft's .NET Framework uses GDI+ (which is a part of Windows) whereas Mono uses libgdiplus <http://www.mono-project.com/Libgdiplus> which is a wrapper around the Cairo graphics library <http://www.cairographics.org/>. This is why you're seeing differences between the two.
The link you posted uses the ImageMagick library, which is something I'd recommend if you're not happy with the quality of the System.Drawing output. ImageMagick (or GraphicsMagick, which is a fork of it) is what I use with PHP and Node.js and it works pretty well. If you don't want to mess around with P/Invoke and native libraries, you could just use System.Diagnostics.Process to run ImageMagick. Just get it working perfectly from the command-line, and then copy the command into your app :). See the ImageMagick docs: http://www.imagemagick.org/Usage/resize/#resize On Sat, Mar 16, 2013 at 4:47 AM, Patrick Epstein <epsto...@gmail.com> wrote: > Hello, > > I'm resizing images with the same c# code on windows and linux and the > results on linux are worse. Just a bit less than acceptable. > What should I do to get comparable good results? > > What I'm doing right now: > > image.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone); > image.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone); > > var resized = resizedImage = image.GetThumbnailImage(width, height, > null, IntPtr.Zero); > > var encoderParameters = new EncoderParameters(1); > encoderParameters.Param[0] = new > EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 90); > > saving... > > Or is this the way to go? > > http://www.toptensoftware.com/Articles/17/High-Quality-Image-Resampling-in-Mono-Linux > > Best regards, > Patrick > > _______________________________________________ > Mono-aspnet-list mailing list > Mono-aspnet-list@lists.ximian.com > http://lists.ximian.com/mailman/listinfo/mono-aspnet-list > >
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