Web App: rsizr
Intelligently resize your images online. I haven’t found a standalone application or Photoshop plugin that lets you do this kind of image-resizing (yet). But this is fantastic.
“rsizr is a Flash application that lets you resize JPG, PNG, and GIF images on your computer. With rsizr, in addition to normal image rescaling and cropping, you can also resize images using a new image resizing algorithm called seam carving (a method of image retargeting) that tries to keep intact areas in your image that are richer in detail.
Seam carving is a brilliant image resizing technique pioneered by Shai Avidan and Ariel Shamir. For their rockstar YouTube video and paper, click here.”