On Fri, 29 Jan 2010 12:41:06 -0500, Steven Friedrich <[email protected]> wrote: > I have a webcam, but it won't take a monochrome picture and it doesn't > snapshot all the resolutions that it can display in. In particular, I tried > the two lowest and the lowest, sqcif, isn't supported by my webcam and qsif > seg faults. Those would have been 128x96 and 160x120. > > I figured that if I used the lowest resolution, I could crop out a 40x40 > image.
You can use ImageMagick's convert command to scale the image, and turn it into monochrome; see "man convert" for -resize and -monochrome parameters. It's even possible to use Gimp for this task. :-) > Kopete also supports a 200x200 pixel image, but I think it requires exactly > 200x200, so 128x96 won't work. You can use "!" with -resize to force a specific image size, even if it violates the source picture's aspect ratio (which -resize usually keeps). > I thought that someone said they used kamera to take a snapshot with their > webcam but Logitech webcams aren't listed. Maybe you can use gtkam / gphoto2 to talk to the Logitech camera? I don't own one because I'm familiar with the fact that they are not standard-compatible and that's why not supported. > I can take one with pwcview, which is what I was talking about above. You can even use a "regular" digital camera to take the photo, transfer it from the camera (or its CF or SD storage) and then postprocess it with ImageMagick. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[email protected]"
