Society of Robots - Robot Forum

General Misc => Misc => Topic started by: izaktj on October 05, 2008, 11:28:40 PM

Title: Long range target tracking with the blackfin camera? (~20m)
Post by: izaktj on October 05, 2008, 11:28:40 PM

or less?

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: hgordon on October 06, 2008, 08:18:56 AM

You can change the lens on the SRV-1 Blackfin camera.  Default lens is 3.6mm focal length with 90-deg field of view, but any 12mm diameter lens with 0.5mm thread pitch will work.  Here are some options -

http://www.mars-cam.com/lenses/ccd_cmos/43fix.html

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: izaktj on October 07, 2008, 02:18:09 PM

Thanks man.

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: izaktj on October 07, 2008, 02:25:20 PM

BTW, cand something like this be done with the blackfin camera?
http://www.procerusuav.com/video/TargetFollowingLong.wmv <----Video

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: hgordon on October 07, 2008, 11:53:31 PM

There's basic blob tracking now, but you will probably need some additional filtering for shape and perhaps motion estimation.  Certainly, the processor has the capability to perform this type of operation, but the software is important.

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: izaktj on October 08, 2008, 12:22:36 AM

Quote from: hgordon on October 07, 2008, 11:53:31 PM

There's basic blob tracking now, but you will probably need some additional filtering for shape and perhaps motion estimation.  Certainly, the processor has the capability to perform this type of operation, but the software is important.

So it's about software and not about hardware?  :D I hope it is, software is *free* lol but hardware ain't  :(

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: hgordon on October 08, 2008, 08:58:13 AM

Yes - it's about software.  With the SRV-1 Blackfin camera, the hardware will capture camera frames into memory at close to 30 frames/second using DMA (no CPU load), even at 320x240 or 640x480 resolution, so then it's a matter of telling the Blackfin what to do with the pixels in software.

Title: Re: Long range target tracking with the blackfin camera? (~20m)
Post by: izaktj on October 10, 2008, 01:08:49 AM

Quote from: hgordon on October 08, 2008, 08:58:13 AM

Yes - it's about software.  With the SRV-1 Blackfin camera, the hardware will capture camera frames into memory at close to 30 frames/second using DMA (no CPU load), even at 320x240 or 640x480 resolution, so then it's a matter of telling the Blackfin what to do with the pixels in software.

Awesome! So blackfin + roborealm = Succes  ;)
However I'm a bit short of money lol so I'll look for other "alternatives"

Thanks