The International Ruby Conference -- more commonly known as RubyConf -- has been the main annual gathering of Rubyists from around the world since 2001.

http://www.railsconf.com/

April 21-23, 2015 • Atlanta, Georgia

Something similar to JsConf:

http://fluentconf.com/javascript-html-2015?cmp=kn-web-confre...

http://www.buildwindows.com/ 2015

"/dev/winter 2015" http://devcycles.net/2015/winter/?utm_source=lanyrd

Free 1 day software conference. Development, DevOps, Mobile, Web, NoSQL, Cloud, Functional Programming, Startups and more.

QCon London 2015

http://qconlondon.com/

9th International Software Development Conference

Or

QCon New York 2015

The 4th Annual International Software Development Conference

https://qconnewyork.com/

Maybe: http://sxsw.com/interactive ?

Less Web Dev though ( http://www.gdconf.com/ )

Game Developers Conference

I think there will be:

http://html5devconf.com/ for 2014 as well.

Here are some other conferences about "Computer Image Analysis, Computer Vision Conferences One Year Calendar"

http://conferences.visionbib.com/Browse-data.php?order=DateN...