Imagick Resizer is a module that hooks into core ImageSizer and do the Imagemanipulations using Image Magick via PHP-extension Imagick. It simply needs to be installed into the site/modules/ section.
x-others :: dimension_calculation
-4
width from 195 to 142 = result: 142
-3
width from 195 to 143 = result: 143
-2
width from 195 to 144 = result: 144
-1
width from 195 to 145 = result: 145
0
width from 195 to 146 = result: 146
1
width from 195 to 147 = result: 147
2
width from 195 to 148 = result: 148
3
width from 195 to 149 = result: 149
4
width from 195 to 150 = result: 150
Last run was on 13.01.2015 - 08:49, test execution time: 0.0034070000