strand-cam publish images to ROS?

[Floris van Breugel]

Hi Andrew,

Is it possible to have strand-cam publish camera data to ROS (as an option)? 

Right now we have to jump through all sorts of hoops to get Braid and pylon-ros-camera to work together on the same computer, but if strand-cam could publish to ROS (or maybe it does and I just don't know) that would streamline things so much.

- Floris

[Andrew Straw]

Dear Floris,

I just wrote a little demo Python script that connects to Strand Cam and saves the images to .jpeg files on disk. https://github.com/strawlab/strand-braid/blob/main/strand-braid-user/scripts/strand_cam_subscriber.py You could modify this into a ROS node pretty easily, I think. I tried to document the potentially non-obvious aspects like saving cookies to disk so that the URL with new token is not required on each usage but rather just the static portion of the URL after the inital use. Basically the script should work like a web browser connecting to strand-cam.

I hope that’s useful. If we need to speed up the rate of images coming across, we can do that, but it will require changes to strand-cam itself.

(I don’t want to add ROS as a dependency to strand-cam. It used to be an optional dependency and I removed it.)

Best,

Andrew

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[Floris van Breugel]

Thanks, that looks like a super helpful script, I'll see what I can do!

- Floris

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Floris van Breugel   |   http://www.florisvanbreugel.com
Assistant Professor of Mechanical Engineering 

& Graduate Program for Neuroscience

University of Nevada, Reno

Wildlife and Landscape Photography

Galleries: http://www.ArtInNaturePhotography.com/
Blog: http://www.ArtInNaturePhotography.com/wordpress/