SK-AM62A-LP: Query on mirror image the live video

Hello Sajan,

Can you tell me what you were running exactly? Were you able to stream from imx219 to a display showing proper images, following the instructions given at the AM62A Linux Academy?

Regards,

Jianzhong

Hello Jianzhong,

Jianzhong Xu said:

what you were running exactly

apps_python.

Jianzhong Xu said:

Were you able to stream from imx219 to a display showing proper images

Yes, The display shows proper live video by camera and image classification working well. But seems screen flickering after 10 minutes.

Best Regards,
Sajan

Sajan Saji said:

apps_python.

Can you share the exact command and log so that I can try to reproduce the issue? Please share the HW setup as well.

Sajan Saji said:

Now it seems left and right hand side vicevers

Is this problem still there?

Thank you.

Jianzhong

Hi Jianzhong, 

Jianzhong Xu said:

command and log so that I can try to reproduce the issue

root@am62axx-evm:/opt/edgeai-gst-apps# ./apps_python/app_edgeai.py configs/my_config.yaml

Also I have some changes in post_process.py ( did a loop of 5 seconds collection, 15 display of recognized class). But I think there is no problem with it now I checked it in cpp app that has no modification in code.

HW setup is AM62A with Arducam v3Link d-ch adapter board and IMX219 camera connected with it.

Jianzhong Xu said:

Is this problem still there?

Yes. I saw mirror image in display.

Best Regards,
Sajan

Hi Sajan,

Can you run streaming without AI processing and see if the image is still flipped? For example, try the below Gstreamer pipeline:

gst-launch-1.0 v4l2src device=/dev/video-imx219-cam0 io-mode=dmabuf-import ! \
video/x-bayer, width=1920, height=1080, framerate=30/1, format=rggb ! \
tiovxisp sink_0::device=/dev/v4l-imx219-subdev0 sensor-name="SENSOR_SONY_IMX219_RPI" \
dcc-isp-file=/opt/imaging/imx219/linear/dcc_viss.bin \
sink_0::dcc-2a-file=/opt/imaging/imx219/linear/dcc_2a.bin format-msb=7 ! \
video/x-raw, format=NV12, width=1920, height=1080, framerate=30/1 ! \
kmssink driver-name=tidss sync=false force-modesetting=true

Please also share a picture of the real scene and the image on the display when the image is mirrored.

Thanks,

Jianzhong

Hello Jianzhong,

I am out of office now. Will do this on Monday and get back to you with the image.

Need any video or image of flickering screen?

Best Regards,
Sajan

Hi Jianzhong,

Jianzhong Xu said:

image is still flipped

Image is flipped when run streaming.

This is a paper that I mark cameras right and left but it appears in wrong side

This is the issue with the flickering occured after 5 minutes when gst-launch-1.0 ... 

Warm Regards,
Sajan

Hi Sajan,

Thanks for sharing these pictures. Did you run the exact Gstreamer command that I provided? Which version of SDK are you using?

Regards,

Jianzhong

Hello Jianzhong,

Jianzhong Xu said:

exact Gstreamer

yes, exact one.

Jianzhong Xu said:

version of SDK

SDK 10.01

Regards,
Sajan

Hi Sajan,

I ran the same streaming and didn't see the problems you described. 

Not sure what's wrong with your setup.

Regards,

Jianzhong

Hello Jianzhong,

How can I fix this issue. Can I do flip by change in any code.
I didn't do anything for this mirroring

Warm Regards,
Sajan

Try to flip the image at the sensor. The IMX219 driver supports that:

root@am62axx-evm:/opt/edgeai-gst-apps# v4l2-ctl -d /dev/v4l-imx219-subdev0 --list-ctrls

User Controls

                       exposure 0x00980911 (int)    : min=4 max=1759 step=1 default=1600 value=1759
                horizontal_flip 0x00980914 (bool)   : default=0 value=0 flags=modify-layout
                  vertical_flip 0x00980915 (bool)   : default=0 value=0 flags=modify-layout

Please refer to this FAQ on how to change the sensor parameters: How can I change the sensor parameters using v4l2-ctl?

Hello Jianzhong,

Sajan Saji said:

Also one more thing, after approximate 10 minutes of running the display will flicker and got glitch with a rose color. What can be the cause. Is it related to RAM, Arducam v3link or imx219 connected with it?  

[ 1058.024346] ti-udma 4e230000.dma-controller: udma_prep_slave_sg: chan1 is for MEM_TO_MEM, not supporting DEV_TO_MEM
New clock: GstSystemClock
[ 1058.036104] j721e-csi2rx 30102000.ticsi2rx: Failed to drain DMA. Next frame might be bogus
Redistribute latency...
Execution ended after 0:05:46.717844930

This is the error log when the screen flickering.

I tried with IMX335 5MP USB camera . No such issue with this camera. 
What can be the cause?

Best Regards,
Sajan

Hi Sajan,

Can you try directly connecting IMX219 to the AM62A board without using the v3link board and see if this issue happens?

Thanks,

Jianzhong

Hi Jianzhong,

Jianzhong Xu said:

try directly connecting IMX219 to the AM62A board without using the v3link board

Can't connect, Because of fakra cable can only be connect with v3link board.

Or can I connect the camera FFC directly to AM62A?

Thanks,
Sajan

Sajan Saji said:

Or can I connect the camera FFC directly to AM62A?

Yes, please refer to AM62A Linux Academy - using camera (scroll to CSI-2 Camera) and follow the instructions.