Question

I want to resize a picture to a new size using one parameter: Width.

If the picture is horizontal, the new size will be: width = Width, height = proportional to width.

And if the picture is vertical, the new size will be: height = Width, width = proportional to height.

Any idea how to implement this?

I’m using ImageMagick with MagickNet wrapper.

Answer 1

From the usage reference at http://www.imagemagick.org/Usage/resize/

convert org.jpg    -resize widthxwidth  final.jpg

e.g. widthxwidth can be 256×256

The aspect ratio will be kept and the resizing will be done within the boundary of 256 X 256 pixel square.

Quoted from the page above:

Resize will fit the image into the
requested size. It does NOT fill, the
requested box size.