In this habrotopic , the eject has shown us a new technology for scaling images Seam Carving, developed in the Mitsubishi Electric Research Laboratory. For those who are too lazy to read, the essence is “smart” scaling, which makes it possible to unevenly change the proportions of the image in such a way as to leave the meaningful content as untouched as possible.
Here is the first implementation I know about - Rsizr.com . It must be said, very impressive!
Comments, as they say, are superfluous. Just fill your image and play with the scale. Only I do not advise downloading large files - it will take a lot of time to process. ')
Based on my blog .