Linux: AM5728 image decoding acceleration

user4933918

Other Parts Discussed in Thread: AM5728

Tool/software: Linux

Hello, TI.

I am using am5728 to do some image processing work and I met some problems.

I want to read images from two cameras and do some work related to real-time stereo vision. While in practice, the delay between my action in reality and in screen is large,about 1s.

I have tried Videocapture::grab() but it doesn't work. The format coming from the two cameras is MJPEG.

I want to know if I can use the IPU(image processing unit) or DSP in target board to accelerate the decoding of the image.

Thanks.

Li Qi

over 7 years ago

0 Margarita Gashova over 7 years ago

TI__Guru* 80190 points

Hello,

What is the software that you are using?
Are you using ducati mjpeg dec?

BR
Margarita

0 user4933918 over 7 years ago in reply to Margarita Gashova

Prodigy 90 points

Hi, Margarita.
Until now I have no idea about which software I can use to accelerate the image decoding process.
I found a wiki page related to what you said ducati mjpeg dec.
developer.ridgerun.com/.../index.php
So I think the ducati mjpeg dec is one of gstreamer pipelines. For the gstreamer, I tried some pipelines before, but I don't know how to combine the pipeline into my own program to complete my task.
Thanks.

Li Qi

0 Margarita Gashova over 7 years ago in reply to user4933918

TI__Guru* 80190 points

Hello Li Qi,

This is our multimedia wiki page:
processors.wiki.ti.com/.../Processor_Training:_Multimedia
Actually you are using OpenCV?
If yes, please check this:
answers.opencv.org/.../
Let me check is it possible openCV to be use with ducati mjpeg dec.

I will get back to you when I have some answer. Meanwhile you could search in the OpenCV for some optimizations.

http://answers.opencv.org/questions/

BR
Margarita

0 Margarita Gashova over 7 years ago in reply to Margarita Gashova

TI__Guru* 80190 points

Hello,

In additional, I would recommend you to check this:
processors.wiki.ti.com/.../Processor_Training:_Multimedia

BR
Margarita

0 user4933918 over 7 years ago in reply to Margarita Gashova

Prodigy 90 points

Hi, Margarita.
Thanks for your in-time reply.
Actually I am using OpenCV.
From Multimedia wiki page, I saw some pipeline examples in command and they can work. However, how can I combine the gstreamer plugin into my OpenCV codes?
One possible way is to add the custom DSP kernels in gstreamer existing source codes, but I think this way is kind of troublesome and may cost some time. Would you please give me some suggestions or some simple examples?

Thanks.
Li Qi

0 Margarita Gashova over 7 years ago in reply to user4933918

TI__Guru* 80190 points

Hello,

You could try to add the custom DSP kernels. But if you do not want to use gstreamer, probably is possible to combine your demo with viddec3test. You could build this demo by using MACHINE=am57xx-evm bitbake omapdrmtest and take a look in it if is work for you.
In additional, here is the link to OpenCV :
software-dl.ti.com/.../Foundational_Components.html

Hope this helps.

BR
Margarita

0 Margarita Gashova over 7 years ago in reply to Margarita Gashova

TI__Guru* 80190 points

Hello Li Qi,

I am closing this thread.
You could post a reply to reopen the thread again.
But if this answer your question please click the "This resolved my issue" button.
Thank you!

Best Regards,
Margarita

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Linux: AM5728 image decoding acceleration