Work with OpenCV3 (from berak's commit)

[k-okada]

we're using https://github.com/garaemon/SLIC-Superpixels and noticed that @berak's branch was disappeared,
This PR is consists of several his/her contribution of opencv2/opencv3 supoprt

[k-okada]

@jens25 FYI it seems we're working very similar issue

jens25@91db149

[k-okada]

@ruthvik92 FYI: you also copied code from berak's repo
ruthvik92@b1aee96

[jens25]

HI,
I just ported this algorithm, to use the new OpenCV datatypes and opened a new repo, because I wanted a example, that can be build using cmake. I did some quick and dirty replacements of the original OpenCV functions, to make it work with the new datatypes. Maybe in the future I'll add some more functions and clean it up, but at the moment I don't actively develop on this repo.

[keguoxin]

thanks，the old version or edition can not run on my computer.After I use yours'version.I finally can run.I will continue to study!