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answered 2012-04-17 13:05:03 -0500

joq gravatar image

I don't think image_transport will work with your combined message. And don't forget to publish CameraInfo, too.

Those might be good reasons to consider other alternatives.

The simplest is republishing all those messages on a group of topics at the same time and with the same timestamp. Then, you can use message filters to handle them all in a single subscriber callback.