Can I conclude that you made this for handheld / Phone, with no markers? Does your version of PTAM work on android and / or iphone / ipad? Looking forward dowloading it on my ipadAll code was written from scratch in just under one month's spare time of my brother Dave and I It uses a markerless AR system derived from PTAM (ours is better IMO). Most of the art is from the PC game (with permission), but a few are from my brother Matt. The game was developed on the PC with attention to the limitations of an iPhone or Android in mind when making it (for an easy port). In other news though Mark Kern may be setting up a deal with a certain HMD vendor - nothing official yet though =D.
yupzoost wrote:I ran into this thread:
http://www.firefallthegame.com/communit ... ots.43470/
Where you wrote:
Can I conclude that you made this for handheld / Phone, with no markers? Does your version of PTAM work on android and / or iphone / ipad? Looking forward dowloading it on my ipadAll code was written from scratch in just under one month's spare time of my brother Dave and I It uses a markerless AR system derived from PTAM (ours is better IMO). Most of the art is from the PC game (with permission), but a few are from my brother Matt. The game was developed on the PC with attention to the limitations of an iPhone or Android in mind when making it (for an easy port). In other news though Mark Kern may be setting up a deal with a certain HMD vendor - nothing official yet though =D.
http://ewokrampage.wordpress.com/
All true. The tracking uses only the camera itself and with no markers what-so-ever. It most definitely can work on an iPad, but the final platform it will land on is unannounced at this time. The HMD vendor is silicon micro display for future hardware models The camera you see in that video is actually a virtual steady-cam running at about 120fps. It looks and plays absolutely awesome in personcybereality wrote:Very cool. Tracking looks spot on too, I did not notice any jumps at all.
MTBS. For the HMD though I'm currently thinking a motion measurement device similar to the ones used in standard VR to improve inter-camera-frame tracking would be better in terms of immersion.There is, but it doesn't look like its online yet? I don't cover the improvements over PTAM in the presentation too much as the audience wasn't a computer vision audience and probably wouldn't be too interested in the details there. Sufficed to say, PTAM is from 2007 IIRC and it has some very clear short-cuts in what they did that can be improved. First, their choice of corner detector and feature descriptor are not the best - not even close. There has been advancements in that area which significantly improve quality. I'd say while there were other improvements, those are probably the most important ones. In the coming weeks/months I'll be re-writing everything I did from scratch to incorporate some other improvements which should require less key-frames in the algorithm as well as a faster bundle adjustment (hoping for 60fps).druidsbane wrote:Any papers on what you guys did? Would it be very hard to get as good a result using just PTAM or do you need to have a steady-cam for best immersion?
Very cool demo. Is it actually fun to play this way though? I could certainly see players wearing VR headsets playing in the virtual world and then having spectators on the outside watching the game from the outside on a table or something using AR as you showed
Will definitely be following your work after this! Certainly more fun to see than sparse voxel tree stuff I read from a few years ago, no matter how useful that was 
yes, but the tracking tends to be better when you have actual things it can track well. We found that while it works well on a white carpet under normal conditions, the tracking fails at extreme angles on mostly random texture like carpet (haven't tried grass yet, but its similar to carpet). Of course there are always degenerate cases like a flat, textureless walls and in that case there isn't much any method based on a standard camera can do. Since that demo though we've improved things quite a bit in tracking and that is our primary target right now. We want the tracking to be flawless and playable under any reasonable condition.brantlew wrote:Don't know how I missed this, but that is really cool. How much environmental texture do you need to implement it well. That carpet has a lot of edges to grab onto. Would it work on something rough but homogenous like grass?
