how to resize an image with ImageMagick 6.7.8 in c#

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1.36/5 (4 votes)

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HI,

I'm trying to resize an image with ImageMagick ( third program) in c#
however the command

// use ImageMagick to resize images
var image = new ImageMagickObject.MagickImage(NewName);

List<object> convertParams = new List<object>();
image.resize("%50"); //---> does not work ( resize is not recognized)

Posted 25-Jun-15 1:48am

masterofc

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ZurdoDev 25-Jun-15 8:10am

I doubt %50 would work, did you try 50%?

Sergey Alexandrovich Kryukov 25-Jun-15 12:15pm

Let me ask you: what did you find in ImageMagic which cannot be done with just System.Drawing?
—SA

2 solutions

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Richard Deeming · Answer 1 · 2015-06-25T02:41:00

Solution 1

That's because the MagickImage doesn't have a method called resize. It has a method called Convert, which accepts an array of arguments describing what you want to do. The available options documented on the ImageMagick site[^].

For example:

C#

var image = new ImageMagickObject.MagickImage();
image.Convert("InputImage.jpg", "-resize", "50%", "OutputImage.jpg");

Posted 25-Jun-15 2:41am

Richard Deeming

Comments

ZurdoDev 25-Jun-15 9:53am

It actually does have a Resize method, http://magick.codeplex.com/wikipage?title=Resize%20image&referringTitle=Documentation

Richard Deeming 25-Jun-15 9:59am

That doesn't look like the same code that the OP's using - the namespace for the .NET wrapper is ImageMagick, but the question has ImageMagickObject. As far as I can see, that's from an older COM wrapper[^].

Having said that, the .NET wrapper looks like the right way to go. :)

ZurdoDev 25-Jun-15 10:02am

Ah, could be.

ZurdoDev · Answer 2 · 2015-06-25T03:53:00

Solution 2

According to this document, http://magick.codeplex.com/wikipage?title=Resize%20image&referringTitle=Documentation[^] the method is Resize, capital R, not lower case r. Also, as in comments, I doubt %50 would work.

Posted 25-Jun-15 3:53am

ZurdoDev