Seam carving is cool and has a lot of potential, especially for certain kinds of images. I can't wait until we see something like it in pro photo editors like Affinity Photo.
Photoshop has it for ages; even bought the original research.
Content-aware image resize library
21–30 of 84 posts
Re: Content-aware image resize library
#22Seam carving is fascinating, and especially the first version of the algorithm really really simple to implement. However, that algorithm introduces certain artefacts - the boat in this picture[0] makes it pretty obvious. The cause of these artefacts are mainly that the original algorithm did not look at energy that was introduced by removing a seam: each time this happens, the pixels adjacent to this seam become nei…
Seam carving is also slow and doesn't work well for stretching images beyond around 50%. Moreover, computing optimal sequence of carving steps using dynamic programming for large images is not practical.
Re: Content-aware image resize library
#23Re: Content-aware image resize library
#24Time to write an iOS app and make millions?
Re: Content-aware image resize library
#25Could we use any direction for pixel removal, rather than only vertical or horizontal ?
You either shrink picture horizontally by one pixel or vertically by one pixel; seams must be 8-connected and always advance by 1 pixel in the opposite direction to the one being removed. It's a heuristics and by making it that way you can guarantee exactness of 1px removal.
These days it's a popular algorithm to be implemented as a midterm project in computational photography courses at top schools.
Re: Content-aware image resize library
#26I wrote a GUI for another seam carving library back in 2009[1], and it looks like although in archive mode, you can still access the source as well as the windows / mac binaries. Just tested it and it still works!
Not as fancy as photoshop I'm sure, but does have the ability to paint a mask of regions to keep / remove to aid the algorithm and get the desired result. Multi-threaded too!
Re: Content-aware image resize library
#27Would this still be covered under the original patent until 2029 [1]? [1] https://www.google.com/patents/US8213745
[deleted]
Re: Content-aware image resize library
#28I think they had this in Photoshop circa 1999, or I def. remember seeing a demo of it by Adobe around that time.
Anyways, neat! Nice contribution.
Re: Content-aware image resize library
#29Looks really interesting. I'd love to see an animated version that shrinks from large to small.
I wrote a version of this in javascript with a live demo you can play with at https://alexander.soto.io/seam-carving
Unable to resize on mobile. Consider giving some margin or padding on the right of the image so one can drag the line to resize.
Re: Content-aware image resize library
#30It looks promising, but the current result isn't great. Use cases for something like this is very specific... perhaps mass conversion of thousands of photos from 4:3 into 16:9...