Forums - Opencv and Camera HAL3

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Opencv and Camera HAL3
kadirdogan
Join Date: 19 Jan 22
Posts: 4
Posted: Fri, 2022-01-28 04:51
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Hi,

I'm trying to get simultaneous video from two cameras with opencv using RB5 Vision Kit. I compiled opencv with LU with GStreamer support. I can make video from Opencv with GStreamer with the following commands.
 
 Main Camera:   cap.open("qtiqmmfsrc camera=0 name=qmmf ! video/x-raw, format=NV12, width=1920, height=1080, framerate=30/1 !  videoconvert !  appsink", cv::CAP_GSTREAMER);
 Tracking Camera: cap.open("qtiqmmfsrc camera=1 ! video/x-raw, format=NV12, width=1280, height=720, framerate=30/1 !  videoconvert !  appsink", cv::CAP_GSTREAMER);
 
 
Can I get two videos simultaneously using Opencv and Camera HAL3 instead of GStreamer here?

 

 

 

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Re: Opencv and Camera HAL3
mita.rathod
Join Date: 17 Sep 18
Posts: 59
Posted: Tue, 2022-02-15 13:27
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HI,

Qualcomm's camera framework is not standard V4L2 framework and opencv can not be open directly. there are currently 2 suggestions:
1.Use QC's own CV library. FastCV is connected to Qualcomm's multimedia framework
2.Use Gstreamer to obtain camera data stream and develop a plug -in to call openCV library
thanks!

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