"Sean Carving" is one of the coolest digital imaging trick you would have ever seen, the new content aware image-resizing method is used to resize images non-uniformly, removing only less important pixels. Developed by two Israeli professors, Shai Avidan and Ariel Shamir the algorithm makes it possible to select important areas of an image that needs to be preserved and change the aspect ratio of an image without effecting the main content look. It's better to see the video presentation below to see what exactly this method can achieve.
IntuImage - is one of its kind free software to make use of this amazing technique on your desktop, this easy to use tool utilizes “seam carving” or “liquid rescaling” allowing significant change in image size and proportion while leaving the important image elements intact.