[ros-users] getting images from a bag

Tim Field tfield at willowgarage.com
Mon May 31 17:32:49 UTC 2010


rxbag (Boxturtle) has this functionality for individual frames.  From the
wiki <http://www.ros.org/wiki/rxbag_plugins>:

*Right-clicking on the image opens a context menu which allows you to resize
the window to the original resolution, or save the image to a .png file.*

rxbag (C-turtle) will allow exporting multiple frames.

Tim

On Mon, May 31, 2010 at 4:37 AM, Victor Eruhimov
<relrotciv at googlemail.com>wrote:

> There is extract_images node in image_view that does exactly the same as
> image_view node, but instead of showing an image it saves it to a jpg file.
> I believe Patrick wrote image_saver (also in image_view) that does something
> similar. I suggest this functionality should reside somewhere in rxbag.
>
> Best Regards, Victor
>
> On May 31, 2010, at 10:05 AM, Kurt Konolige wrote:
>
> > Hmm, that's a little old, and only works for the old topic "raw_stereo",
> > which doesn't exist in current ROS.  I can probably munge it to work
> > with new topics, though.
> >
> > Cheers --Kurt
> >
> > On 5/30/2010 9:09 PM, Jeremy Leibs wrote:
> >> I have not used it, but there is a script called "bag2png.py" in
> >> rosrecord.  I expect it will do what you want.
> >>
> >> On Sun, May 30, 2010 at 9:06 PM, Kurt Konolige
> >> <konolige at willowgarage.com>  wrote:
> >>> Sorry if this has already been covered -
> >>>
> >>> Any way to take the images from a bag file and put them into normal
> >>> PNG-type files in a directory?
> >>>
> >>> Cheers --Kurt
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