DVD covers

[anthony]

Their is a simple solution. Go to your TV cabinate, pull out on of the DVD covers, and measure it.

Okay you have a real world measurement. Now all you need to do is get the image you want and adjust the -density of the image so its pixe lsize matches the real world size. Now print it!

You don't need to worry about resizing it (pixel dimenstions) the printer should do that.

If your printer does things right it will come out the right size. BUT some hardware only works at particular densities. Displays for example are fixed to some value from 72 dpi (dots per inch) to
120 dpi in very high resolution monitors. In that case the denisy of the image needed is fixed, so you will need to resize the image.

To do that take the image you have already assigned a correct density, and use -resample to resize the image to fit a new real world density, and set the image density to the given value. Now try and print (or display) it again, and you should get a hardcopy the right size.

For more info see IM examples,
Density
http://www.imagemagick.org/Usage/basics/#density
Resampling
http://www.imagemagick.org/Usage/resize/#resample


Oh and seeing as you are going to this trouble, why not report your measurements and final pixel size and density for the rest of use too lazy to get a ruler! Note just the overally size, but the cuttoff measurements needed for back/spine/front areas.

PS: Also look at the DVD cover example
http://www.imagemagick.org/Usage/distorts/#box3d
and the forum discussion that helped develop it
viewtopic.php?t=11726
This has some crop sizes that may be useful, though it also uses a resize to allow it to take any sizing input image