Hi,
so i have been trying to use opencv on my jetbot which i have flashed sd card image from Using SD Card Image - JetBot the 4gb version and i have been trying to use opencv but i couldnt access the camera.
i did some research and i found this page from github: GitHub - thehapyone/NanoCamera: A simple to use camera interface for the Jetson Nano for working with USB and CSI cameras in Python. which helped many people in solving their csi camera related problem so i gave it a try and tried to run the example code from its repository:GitHub - thehapyone/NanoCamera: A simple to use camera interface for the Jetson Nano for working with USB and CSI cameras in Python. but i still got the same error ass before
error: OpenCV(4.1.1) /home/nvidia/host/build_opencv/nv_opencv/modules/highgui/src/window.cpp:352: error: (-215:Assertion failed) size.width>0 && size.height>0 in function ‘imshow’
can anyone help please
Check with below command to confirm the camera driver without problem first.
v4l2-ctl -c bypass_mode=0 --stream-mmap
gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM),width=1920,height=1080,format=NV12' ! nvvidconv ! fpsdisplaysink video-sink=fakesink --verbose
it returns the following command when i run this command: gst-launch-1.0 nvarguscamerasrc ! ‘video/x-raw(memory:NVMM),width=1920,height=1080,format=NV12’ ! nvvidconv ! fpsdisplaysink video-sink=fakesink --verbose
i guess its working
Should print the fps every seconds if working well.
nvidia@tegra-ubuntu:~$ export DISPLAY=:0
nvidia@tegra-ubuntu:~$ gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM),width=1920,height=1080,format=NV12' ! nvvidconv ! fpsdisplaysink video-sink=fakesink --verbose
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstFakeSink:fakesink0: sync = true
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstNvArgusCameraSrc:nvarguscamerasrc0.GstPad:src: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/Gstnvvconv:nvvconv0.GstPad:src: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay.GstPad:src: caps = video/x-raw(memory:NVMM, meta:GstVideoOverlayComposition), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstFakeSink:fakesink0.GstPad:sink: caps = video/x-raw(memory:NVMM, meta:GstVideoOverlayComposition), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay.GstPad:video_sink: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0.GstGhostPad:sink: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/Gstnvvconv:nvvconv0.GstPad:sink: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1
GST_ARGUS: Creating output stream
CONSUMER: Waiting until producer is connected...
GST_ARGUS: Available Sensor modes :
GST_ARGUS: 2592 x 1944 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 16.000000; Exposure Range min 34000, max 550385000;
GST_ARGUS: 2592 x 1458 FR = 29.999999 fps Duration = 33333334 ; Analog Gain range min 1.000000, max 16.000000; Exposure Range min 34000, max 550385000;
GST_ARGUS: 1280 x 720 FR = 120.000005 fps Duration = 8333333 ; Analog Gain range min 1.000000, max 16.000000; Exposure Range min 22000, max 358733000;
GST_ARGUS: Running with following settings:
Camera index = 0
Camera mode = 1
Output Stream W = 2592 H = 1458
seconds to Run = 0
Frame Rate = 29.999999
GST_ARGUS: Setup Complete, Starting captures for 0 seconds
GST_ARGUS: Starting repeat capture requests.
CONSUMER: Producer has connected; continuing.
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstFakeSink:fakesink0: sync = true
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 17, dropped: 0, current: 32.99, average: 32.99
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 17, dropped: 0, current: 32.99, average: 32.99
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 32, dropped: 0, current: 29.78, average: 31.41
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 32, dropped: 0, current: 29.78, average: 31.41
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 48, dropped: 0, current: 29.99, average: 30.92
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 48, dropped: 0, current: 29.99, average: 30.92
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 64, dropped: 0, current: 30.01, average: 30.69
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 64, dropped: 0, current: 30.01, average: 30.69
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 79, dropped: 0, current: 29.99, average: 30.55
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 79, dropped: 0, current: 29.99, average: 30.55
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 95, dropped: 0, current: 30.02, average: 30.46
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 95, dropped: 0, current: 30.02, average: 30.46
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 110, dropped: 0, current: 29.99, average: 30.40
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 110, dropped: 0, current: 29.99, average: 30.40
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0/GstTextOverlay:fps-display-text-overlay: text = rendered: 126, dropped: 0, current: 29.99, average: 30.34
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message = rendered: 126, dropped: 0, current: 29.99, average: 30.34
hello,
so when i ran the first command: v4l2-ctl -c bypass_mode=0 --stream-mmap , it returns the following error: -bash: v4l2-ctl: command not found
but when i ran the second command(gst-launch-1.0 nvarguscamerasrc ! ‘video/x-raw(memory:NVMM),width=1920,height=1080,format=NV12’ ! nvvidconv ! fpsdisplaysink video-sink=fakesink --verbose) it returns: a continuous output of fps as you mentioned i had to stop it manually to take screenshot, so i think the camera is working fine.
here is the screenshot:
OK, that tell the sensor driver without problem.
Do you run the CSI_camera.py hit the problem?
yes, i get the error when i ran the CSI_camera.py
I ever try below without problem.
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