stc issues

Results 3 issues of

stc

![posenet](https://user-images.githubusercontent.com/270431/41465910-53f52e6a-70a0-11e8-924d-42090a27b4d0.gif)

![examples](https://user-images.githubusercontent.com/270431/33015571-856d30b2-cdeb-11e7-9e8b-efb6f28b5963.jpg)