Legacy ImageMagick Discussions Archive

Good day everyone

I try to enlarge a picture like this:

$width = $width * 4;
$height = $height * 4;
exec("convert src_images/monkeys.png -adaptive-resize ".$width."x".$height."  resized_adaptive.png");
exec("convert src_images/monkeys.png -resize ".$width."x".$height."  resized.png");

The results from those 2 commands look like the same unlike written http://www.imagemagick.org/Usage/resize ... ive-resize.

Originalimage:
http://www.flickr.com/photos/floridapfe ... hotostream

Resized with a online service which results in very good quality. http://www.pixer.us

Resized with imagemagick

if you go eg in the left down corner you can see that the picture consists out of 60 x 60 pixel sized quadres.

Which different way would you suggest without increasing processing power compared to the initial given commands?
Thanks !

-adaptive-resize can be simulated using

Code: Select all

-filter point -interpolate ???? -distort Resize

-adaptive resize was meant to only use 'mesh interpolation', but whether it uses "Mesh' or the current -interpolate setting, depends on your exact version of IM.

Try setting -interpolate nearest-neighbor before using -adaptive-resize to test if it is dependant or not.

I hope to resolve this this-or-that situation in IMv7 by adding -interpolative-resize Though this operation may be rolled into a more general -resize-special {method} for the myriad of special purpose resizes that currently exist. (that change will be in late beta testing)

Legacy ImageMagick Discussions Archive

Enlarge with good results

Enlarge with good results

Re: Enlarge with good results