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pablo-quilez avatar pablo-quilez commented on July 20, 2024 2

Hello,

it may be related to software triggering. This software triggering may reduce the framerate to 50%. This topic is something which we will address together with the other similar open issues.

Thanks!

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claudiofantacci avatar claudiofantacci commented on July 20, 2024

May be related to #28 and/or #29.

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arunavanag591 avatar arunavanag591 commented on July 20, 2024

Is there a test branch or PR that has contains those changes in #28 and #29 ?

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claudiofantacci avatar claudiofantacci commented on July 20, 2024

Hey @arunavanag591! Unfortunately I have no code available, but you can easily test it by just hardcoding fixed timeouts and by passing a non default first argument to the camera constructor.

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arunavanag591 avatar arunavanag591 commented on July 20, 2024

Does the enum TriggerModeEnums as worked around here needs to be implemented?

pylon-ros-camera/pylon_camera/include/pylon_camera/internal/impl/pylon_camera_base.hpp

Lines 461 to 480 in 9f38321

try
{
int timeout = 5000; // ms
// WaitForFrameTriggerReady to prevent trigger signal to get lost
// this could happen, if 2xExecuteSoftwareTrigger() is only followed by 1xgrabResult()
// -> 2nd trigger might get lost
if ((cam_->TriggerMode.GetValue() == TriggerModeEnums::TriggerMode_On))
{
if ( cam_->WaitForFrameTriggerReady(timeout, Pylon::TimeoutHandling_ThrowException) )
{
cam_->ExecuteSoftwareTrigger();
}
else
{
ROS_ERROR("Error WaitForFrameTriggerReady() timed out, impossible to ExecuteSoftwareTrigger()");
return false;
}
}
cam_->RetrieveResult(grab_timeout_, grab_result, Pylon::TimeoutHandling_ThrowException);
}

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claudiofantacci avatar claudiofantacci commented on July 20, 2024

I didn’t change that specifically. Just reduced the timeout and no buffermode on camera

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arunavanag591 avatar arunavanag591 commented on July 20, 2024

I tried all the recommended values in the issues but they did not work ! I am capped at 75 fps. The values maybe specific to the model of the camera.
My model is : Basler acA1300-200uc

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claudiofantacci avatar claudiofantacci commented on July 20, 2024

Yes, most probably. Just out of curiosity: are you losing/dropping a lot of frames?

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arunavanag591 avatar arunavanag591 commented on July 20, 2024

@pablo-quilez is there a PR or issue I can follow ?

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pablo-quilez avatar pablo-quilez commented on July 20, 2024

@arunavanag591 not yet, sorry, but I will keep you informed.

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pablo-quilez avatar pablo-quilez commented on July 20, 2024

Hello @arunavanag591,

I hope the last update we did in devel branch will solve this issue. I keep the issue open for a while until someone else can verify the correct behavior. Thanks!

Cheers

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FrancoisPicardDTI avatar FrancoisPicardDTI commented on July 20, 2024

Closing the issue here as it seems that the update from December 15th, 2020 solved the problem.

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