How to use laptop integrated camera to capture image?

asked 2013-02-01 01:35:27 -0500

Bala
31 ●7 ●7 ●11

I'm new to ROS. I just want to capture an image with the Laptop camera and use it for object recognition. Can anyone please guide me on this?

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answered 2013-02-01 02:09:56 -0500

dornhege

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updated 2013-02-01 02:11:05 -0500

Basically you just need a ROS driver for you laptop camera. Fortunately there are some generic drivers like gscam or uvc_camera that you could try.

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The driver rosnode publishes images (sensor_msgs/Image messages) on a particular topic, and then the code that you write subscribes to this topic to "capture" the image and perform whatever processing is needed to recognize the object.

SL Remy ( 2013-02-01 02:23:45 -0500 )edit

can you suggest how to write a subscriber and a publisher for capturing image from laptop camera?

Prashant Kumar ( 2015-06-24 14:38:53 -0500 )edit

Hi there, the two listed packages include the publishers (you'd just need to point to the right device..). As far as the subscriber/client goes, take a look at http://wiki.ros.org/cv_bridge

SL Remy ( 2015-08-19 23:57:21 -0500 )edit

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answered 2018-11-17 21:05:28 -0500

Sparkle Eyes
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updated 2018-11-17 21:05:46 -0500

I'm late to the party but just to help others who stumbled upon this page: use usb_cam works just as well on my laptop.

Use sudo apt-get to install usb_cam. Then you can test it with roslaunch usb_cam usb_cam-test.launch

https://answers.ros.org/question/2597...

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Use sudo apt-get to install usb_cam.

I don't believe that will work: the Debian pkgs always use dashes instead of underscores, and you're missing the name of the ROS distribution in that command.

gvdhoorn ( 2018-11-18 04:40:12 -0500 )edit

Thanks for pointing this out. I just meant the user can use apt-get to install the package, not referring to the specific grammar.

Sparkle Eyes ( 2018-11-18 11:01:35 -0500 )edit

This doesn't work out in my case.

Ankit_Jaiswal ( 2019-06-29 10:10:54 -0500 )edit

Hey, as he didn't clearly specified which command to use for installing usb-cam package, use, sudo apt-get install ros-kinetic-usb-cam to install it successfully!