Blitline can do it for you.
http://www.blitline.com/docs/quickstart
Here is an example of how to do this with curl:
curl "http://api.blitline.com/job" \
-d json='{ "application_id": "sgOob0A3b3RdYaqwTEJCpA",
"src" : "http://www.google.com/logos/2011/yokoyama11-hp.jpg",
"functions" : [ {"name": "blur",
"params" : {"radius" : 0.0, "sigma" : 2.0},
"save" : { "image_identifier" : "some_id" }} ]}'
Here is a list of functions images that you can use.
Note:
- The source image must be publicly available or on your Amazon S3 account.
- Blitline S3 S3.