Hi,
<snipped>
> If you use straight Xpm, then you're definitely going to take a
> monstrous performance hit -- probably an order of magnitude's worth.
> As I said, if you really feel compelled to use Pixmap objects, you
> have to convert your image data to a X Pixmap. Refer to your favorite
> Xlib documentation and manual pages for discussion of XImage and
> Pixmap operations.
>
> You don't say what kind of a platform you're running. Presumably if
> you have live video input, you will have some capacity for live video
> display in a Window. If you do and you can choose what Window that
> the video goes to, then you win. Otherwise, you probably lose.
Our situation is like the following,
We have a mobile robot which has a stereo camera system (with
Matrox meteor framegrabbers) installed. The robot runs on Linux OS. The
framegrabber return RGB values of each pixel on the image grabbed by the
camera. As the robot is controlled by host computer via wireless
ethernet, we are going to develop a GUI for real-time display of images
grabbed by the camera on a client program. The client program will be run
on host computer. The bandwidth of our wireless modem is about 2Mb/s. Is
it possible to have real time image display (with frame rate >12fps) with
image compression/decompression overhead on the server and client
programs? Would you suggest some tools for us to achieve the task? Would
you explain how to display an image on a Canvas?
Thanks in advance.
Regards,
Wai Keung, Fung
>
> I know that there have been at one time some MPEG-type folks on this
> list -- perhaps they have some words of wisdom to share.
>
> spl
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