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Using single camera with different programs simultaneously

asked 2016-01-01 13:21:51 -0500

furkanpur gravatar image


I have a camera and i want to use it 2 different programs simultaneously. (i.e. writen with python and c++). How can i work it or what is alternative way to use it ?

Thanks for your advice.

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answered 2016-01-01 16:42:12 -0500

What performance do you need? The absolute simplest way would be to create one program that reads from the camera and writes the images to a folder on the RAM (ramdisk). Your two programs check this folder and process images. You can use file-properties or the filename to encode the time stamp of the image. Other approaches would be the usage of ROS ( but that's rather overkill if you can't use it also for other problems.

You could also create full UDP or TCP sockets and send the image. The cv::Mat has a member called data which contains the raw pixel information. But you'd have to implement your own schema to transfer the image type, size and similar stuff.

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I have a built program, so I could not create a one program. This application uses camera and i want to use camera another program which i wrote with python.

I think i have to use different programs, however I don't know how can i use the camera for different programs simultaneously.

furkanpur gravatar imagefurkanpur ( 2016-01-01 17:14:07 -0500 )edit

As FooBar said I think that's not possible to share hardware.If your application accept Ip camera you can use ffmpeg to make a server and then share this Ipcam. But it will be slower than a webcam

LBerger gravatar imageLBerger ( 2016-01-03 12:20:32 -0500 )edit

Ok, Thanks for your helps.

furkanpur gravatar imagefurkanpur ( 2016-01-03 12:30:01 -0500 )edit
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Asked: 2016-01-01 13:21:51 -0500

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Last updated: Jan 01 '16