Home
914 PC Bots Forum  


<< Start < Prev 1 2 Next > End >>
motters
User

Platinum Boarder
Posts: 132
graphgraph
Karma: 1  
RoboRealm Visual Anchor - 2007/08/16 16:13 This thread discusses the Content article: RoboRealm Visual Anchor

This might be a useful function in some situations, although I expect it might fail if the sun came out from behind a cloud. Algorithms like this are still very much in the ad-hoc 2D vision category. There's still some way to go before robots like the 914 have a good sense of vision comparable to human or animal vision capabilities.
  | | The administrator has disabled public write access.
c6jones720
User

Platinum Boarder
Posts: 350
graphgraph
Karma: 3  
Re:RoboRealm Visual Anchor - 2007/08/16 16:55 A while ago one of my friends that works in the food industry ran an algorithm like this on my computer. It was okay but if you moved the camera around too quickly or rotated it completely away from the target image it had a lot of difficulty finding it again, and like Motters said it was adversly affected by light.

Hopefully this is much better than the version I saw.
  | | The administrator has disabled public write access.
jamesbruton
Admin

Admin
Posts: 683
graph
Karma: 8  
Re:RoboRealm Visual Anchor - 2007/08/16 18:22 I think RoboRealm is pretty good for robot enthusiasts to use for free and interface to eassily...

Perhaps someone can write and releasse something better?
  | | The administrator has disabled public write access.
RoboRealm
User

Fresh Boarder
Posts: 2
graphgraph
Karma: 1  
Re:RoboRealm Visual Anchor - 2007/08/17 11:03 Agreed, if you move the camera too quickly or shake it around violently then the system will lose track of the image. In addition, a large lighting change (i.e. if you switch off a light or a cloud suddenly darkens the scene) it might cause some instability. Occlusions are also a problem (i.e. if someone walks in front of the camera).

Part of the reason for the release is to get those situations where it doesn't work brought to our attention. Only by using the system out of the lab can one start to understand where it fails and where it is useful. We invite anyone that finds that this does not fit their needs to explain way (i.e. provide images) and give us a chance to improve on the system.

You're correct in that we have a long way to go before the 914 can see like humans ... but here's a chance to actually help with that long journey!

STeven.
www.roborealm.com
  | | The administrator has disabled public write access.
Marcus8675
User

Platinum Boarder
Posts: 267
graphgraph
Karma: 3  
Re:RoboRealm Visual Anchor - 2007/08/17 11:09 I have to give a thumbs up to the RoboRealm guys. I have used it on the 914 and had a few issues. I had replies posted on the site in hours and a new version was out the next day. I have watched the Roborealm site a lot since then and it is a trend. They are very responsive and improvments come quickly. I got my USB nerf launcher working in a few days
  | | The administrator has disabled public write access.
motters
User

Platinum Boarder
Posts: 132
graphgraph
Karma: 1  
Re:RoboRealm Visual Anchor - 2007/08/17 16:19 I've not used RoboRealm at all, but if as I expect there are problems due to lighting changes or sudden motion it might be an idea to include geometric matching of key features as part of the algorithm. This could be done using a feature detector such as SIFT or Ed Rosten's corner detector. Matching both geometry and colour might give a more robust performance.

However, in the long run I expect that all these types of algorithm will be dissplaced by more generalised types of computer vision.
  | | The administrator has disabled public write access.
<< Start < Prev 1 2 Next > End >>