Issue with initiating point grey Camera

[eghbalhosseini]

Hi,

I have installed and tested the xyTracker and it doesn't give me any error. however when I am running xy.Tracker({0,'myfile.avi'}) I get the following error :
Error using xyVideoHandler_
Only one camera instance supported

Error in xy.core.VideoHandlerMex/a_startReader (line 350)
self.id = xyVideoHandler_('camera',camidx,self.videoFile{2},upper(self.codec),knnMethod);

Error in xy.core.VideoReader/startReader (line 198)
self.a_startReader();

Error in xy.core.VideoReader (line 242)
self.startReader();

Error in xy.core.VideoHandlerMex (line 78)
self@xy.core.VideoReader(vidname);

[charlielam0615]

Hi, I think xyTracker only supports pointGrey camera. What camera are you using? Charlie

…

On 20 Oct 2017, at 11:38 PM, eghbalhosseini ***@***.***> wrote: Hi, I have installed and tested the xyTracker and it doesn't give me any error. however when I am running xy.Tracker({0,'myfile.avi'}) I get the following error : Error using xyVideoHandler_ Only one camera instance supported Error in xy.core.VideoHandlerMex/a_startReader (line 350) self.id = xyVideoHandler_('camera',camidx,self.videoFile{2},upper(self.codec),knnMethod); Error in xy.core.VideoReader/startReader (line 198) self.a_startReader(); Error in xy.core.VideoReader (line 242) self.startReader(); Error in xy.core.VideoHandlerMex (line 78) ***@***.***(vidname); — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[eghbalhosseini]

I am using a point gery camera: Grasshopper3 2.3 MP Color USB3. I have downloaded the drivers as well as the hardware support for the camera in matlab.

[maljoras]

Hi:
Did you clear any existing variables before tracking a new file ?

clear all

It might be that there are not stopped jobs in the background. Also the system should support other cameras as well, not just ptGrey.

[eghbalhosseini]

I have tried clear all variables in matlab. As for the support, I am not sure if I understand correctly what you mean. Should I install new drivers? I can access point grey from Flycap software

…

On Wed, Nov 1, 2017 at 9:20 PM, maljoras ***@***.***> wrote: Hi: Did you clear any existing variables before tracking a new file ? clear all It might be that there are not stopped jobs in the background. Also the system should support other cameras as well, not just ptGrey. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#15 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AMaqUzV_acMjlMCP2LVd_VkNrsM66EDpks5syRj0gaJpZM4QA2LT> .

[maljoras]

xyTracker supports all OpenCV compatible cameras. But it should in particular support ptGrey via the FlyCapture SDK. The error message you got should only occur if there is an VideoHandler object in the background. Try "clear all" or restart matlab to delete all existing VideoHandlers.

What Matlab Version and FlyCapture SDK Version are you using?

[eghbalhosseini]

Matlab: R2017b
Flycapture: 2.11.3.164

I tried restarting and this is the new error:

`Error using xyVideoHandler_
Could not start the VideoHandler

Error in xy.core.VideoHandlerMex/a_startReader (line 356)
xyVideoHandler_(self.id,'start');

Error in xy.core.VideoReader/startReader (line 198)
self.a_startReader();

Error in xy.core.VideoReader (line 242)
self.startReader();

Error in xy.core.VideoHandlerMex (line 78)
self@xy.core.VideoReader(vidname);

Error in xy.Tracker/newVideoHandler (line 759)
handler =
xy.core.VideoHandlerMex(vidname,timerange,self.useKNN,opts);

Error in xy.Tracker/setupSystemObjects (line 850)
[self.videoHandler,self.timerange] =
self.newVideoHandler(vid,self.timerange);

Error in xy.Tracker (line 3180)
self.setupSystemObjects(vid); % will call setOpts`

[maljoras]

I guess, you did compile the mex files (make ...)?
But you said the runTest worked (on an avi file)?
Are you using windows?
does
xyTracker(0)
gives some results ?
I have not tried it on such a new version of matlab.