Locating interesting parts of an image
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Locating interesting parts of an image
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Re: Locating interesting parts of an image
#2I've written the cropping algorithm being used at Facebook, here is a write-up of the method if you are interested: http://blog.vjeux.com/2012/facebook/best-cropping-position.h...
I tried to use saliency-based approaches but they don't really work that well for non artistic photos. For example, this image[1] would have edges everywhere but next to the faces.
If you have some time, I would be interested in seeing the results of your approach in my example images[2].
[1] - https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-snc6/p206x...
[2] - http://blog.vjeux.com/wp-content/uploads/2012/10/cropping.ht...
Re: Locating interesting parts of an image
#3From my photography experience which i also apply to graphic design the Rule on thirds and the Golden ratio are the best ways to locate / create interesting parts of an image. This can be achieved by clever cropping too.
http://en.wikipedia.org/wiki/Rule_of_thirds http://en.wikipedia.org/wiki/Golden_ratio#Aesthetics
Re: Locating interesting parts of an image
#4Reddit's thumbnailing script works nice as well, https://github.com/reddit/reddit/blob/master/r2/r2/lib/scrap...
edit: I even think you are using a similar method.
Re: Locating interesting parts of an image
#5Reddit's thumbnailing script works nice as well, https://github.com/reddit/reddit/blob/master/r2/r2/lib/scrap... edit: I even think you are using a similar method.
Yes I'm using a similar method in the first section of the article (information theoretic solution), but I think that reddit is using the entropy of an image instead of the self-information. The self-information yields to better results in our case (empirically). In the latter sections I use different methods.
Re: Locating interesting parts of an image
#6I've written the cropping algorithm being used at Facebook, here is a write-up of the method if you are interested: http://blog.vjeux.com/2012/facebook/best-cropping-position.h... I tried to use saliency-based approaches but they don't really work that well for non artistic photos. For example, this image[1] would have edges everywhere but next to the faces. If you have some time, I would be interested in seeing the…
Very interesting approach thanks, unfortunately we don't have the social features ...
Re: Locating interesting parts of an image
#7Reddit's thumbnailing script works nice as well, https://github.com/reddit/reddit/blob/master/r2/r2/lib/scrap... edit: I even think you are using a similar method.
Yes I'm using a similar method in the first section of the article (information theoretic solution), but I think that reddit is using the entropy of an image instead of the self-information. The self-information yields to better results in our case (empirically). In the latter sections I use different methods.
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Re: Locating interesting parts of an image
#8From my photography experience which i also apply to graphic design the Rule on thirds and the Golden ratio are the best ways to locate / create interesting parts of an image. This can be achieved by clever cropping too. http://en.wikipedia.org/wiki/Rule_of_thirds http://en.wikipedia.org/wiki/Golden_ratio#Aesthetics
Doesn't this rely on the photographer having framed the photo with that in mind originally? Given a set of arbitrary photos I'm not sure the rule of thirds could be applied in any meaningful way to pick the "interesting bits".
Re: Locating interesting parts of an image
#9Would an application of seam carving[1] be useful?
Re: Locating interesting parts of an image
#10Reddit's thumbnailing script works nice as well, https://github.com/reddit/reddit/blob/master/r2/r2/lib/scrap... edit: I even think you are using a similar method.
This looks like a nice, simple solution. Now I wonder if there is a solution similar to this written in PHP.