i.MX ProcessorsのトピックRe: Opencv on i.MX8 Yocto

Opencv on i.MX8 Yocto

xu_ji1 — Thu, 21 May 2020 10:53:27 GMT

Hello,

About i.MX8 Yocto,does the Opencv in aarch64-mx8-poky-linux will upgrade?

Now we use i.MX8 QM 2.3.0 Yocto release the OpenCV version is 4.0.1,we want OpenCV version 4.1.2

does it will upgrade or how to get new OpenCV version?

Thanks

Re: Opencv on i.MX8 Yocto

Bio_TICFSL — Thu, 21 May 2020 14:30:44 GMT

Hello Xu,

in the MX8QM we have the OpenCV 3.4, you have to wait until next releases for version 4.x, currently we are in L5.4.3 BSP, se next releases will appear in July 2020.

Regards

Re: Opencv on i.MX8 Yocto

xu_ji1 — Fri, 22 May 2020 01:30:33 GMT

Hi,

You say OpenCV 3.4 is in 4.0.1.imx folder?How to check the correct OpenCV version in Yocto?

Thanks

Re: Opencv on i.MX8 Yocto

Bio_TICFSL — Fri, 22 May 2020 13:40:48 GMT

Hi,

The OpenCV version is contained within a special

cv2.__version__

variable, which you can access like this:

Checking your OpenCV version using Python

$ python

>>> import cv2

>>> cv2.__version__

'3.0.0'

The

cv2.__version__

variable is simply a string which you can split into the major and minor versions:

Checking your OpenCV version using Python

>>> (major, minor, _) = cv2.__version__.split(".")

>>> major

'3'

>>> minor

'0'

Regards

Re: Opencv on i.MX8 Yocto

xu_ji1 — Sat, 23 May 2020 03:24:01 GMT

Hi，

May I use the Python check OpenCV version on the 8QM mek HW board?

Re: Opencv on i.MX8 Yocto

xu_ji1 — Wed, 27 May 2020 07:05:28 GMT

hi，

When I input >>> import cv2 on board

it is show that error:

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named cv2

pls help check it

Thanks

Re: Opencv on i.MX8 Yocto

don_gunn — Thu, 04 Jun 2020 15:54:36 GMT

Hi Xu Ji,

Using the Yocto 5.4.3 release, Python 3 works for this. From the command line on your board:

root@imx8qmmek:~# python3

>>>import cv2

>>> cv2.__version__
'4.2.0'

Don

Re: Opencv on i.MX8 Yocto

xu_ji1 — Fri, 05 Jun 2020 08:38:18 GMT

Hi Don，

Thanks， and do u know how to upgrade Yocto 2.3.0 release OpenCV verison to 4.2.0 that Yocto 5.4.3 release?

Re: Opencv on i.MX8 Yocto

don_gunn — Fri, 05 Jun 2020 16:33:45 GMT

Hi Xu Ji,

I don’t see a Yocto 2.3.0 release. The earliest Yocto release that I can see support for the MX8 QM in is 4.9.51. You might want to double check the version that you are on.

When you run “bitbake ” you will see the “DISTRO_VERSION” listed. The best way to get a newer version of OpenCV would be to use a new distro.

You can check the version that is provided in your BSP by running:

$ bitbake -s | grep opencv

opencv :4.2.0.imx-r0

In Distro 4.19-warrior you get OpenCV 4.0.1. It might be possible to integrate 4.2.0 into an older distro but it would probably be a fair bit of work.

Best recommendation is to move to Yocto distro 5.4-zeus to get OpenCV 4.2.0

Don

Don Gunn BEng, Bsc

Advanced Engineer, Processor Specialist

Future Intelligent Solutions

C: 604-318-1319

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