ASI120MM /dev/video0

ivanberton

Hi all, i need to see ASI camera as a raspberry cam in /dev/video0. is it possible?

with SDK is possible to write to /dev/video0?

i need to stream in h264 rtsp to record it with a NVR.

thanks.

chad

Hi，

In theory, it is possible. But I think there's actually a lot of problems with doing that.

One of the main problems is that V4l2 requires drivers to work in kernel space, which our SDK might not be able to do.

Therefore, I think it is better for you to package the data into RTSP directly after collecting from SDK. It should be easy to program.

Thanks

Chad

ivanberton

Ok thanks, but all example ISS Made using opencv... is there a possibility to non use opencv?

chad

Hi Sir,

As we know, the data from our SDK is a string stream. You can do whatever you want with it. For example, write it into a text file.

But when a man want to know the meaning of the data, a text file is hard to understand, and the image is easy. So most of the time we want to save images that most systems can recognize. That's why we use OPENCV. Opencv will help us save and display images more easily.

If your target is not seeing the image, but just making some data analysis. Maybe a text file is easy for you to program.

Thanks

Chad

ivanberton

Thanks for reply.

i have read with ASIGetVideoData data from ASI cam and now i have the unsigned char* imagedata.

In raspberry distribution opencv is build with gcc 4 and i use gcc 5 so i can't use this library.

I try to use c++ libjpeg to save it but the image is wrong.

What kind of unsigned char* data is readed from ASI cam?

Can you help me to save this buffer in right way to jpg image.

Thanks.

chad

Hi，

1, For the unsigned char* data, I am not sure what your mean.

2, About save the image, please refer to the saveBmp function in our demo. They are similar.

Thanks

Chad