Re: [Playerstage-users] BlobfinderProxy

[Brian G. <ge...@ai...>]

chenmeng wrote:

> I am looking  for something that can detect colored objects, I had a 
> look at the  API docs for blobFinder and there isn't much said about what
> the function and do and returns.  For the function
> int SetTrackingColor 
> <http://playerstage.sourceforge.net/doc/Player-cvs-html/player/classBlobfinderProxy.html#a5> 
> 
> does it returns or 0 or 1 if it finds a blob that fits the RGB criteria ??
> 
> How do I initiate the tracking  if    int SetTrackingColor 
> <http://playerstage.sourceforge.net/doc/Player-cvs-html/player/classBlobfinderProxy.html#a5> 
> only sets up a filter for tracking?

Are you working with hardware or in simulation?

If you're in simulation, don't worry about the SetTrackingColor method; 
it's not necessary or supported.  Just subscribe to the simulated 
blobfinder.  Calling PlayerClient::Read() will fill in the 
BlobfinderProxy object with the latest data on all blobs that are in view.

> and what happened to the member var "blob_count" it's undefined when I 
> tryed to compile it?
> 
> I am using ps 1.5.

Look here:

http://playerstage.sourceforge.net/doc/Player-cppclient-1.5-html/node7.html

In Player 1.5, the blobs are sorted by channel (color). 
BlobfinderProxy::num_blobs is an array that tells you how many blobs of 
each color were found.

	brian.