How do I create a 40x40 pixel monochrome mage for KMail?
freebsd at edvax.de
Fri Jan 29 17:51:09 UTC 2010
On Fri, 29 Jan 2010 12:41:06 -0500, Steven Friedrich <freebsd at insightbb.com> 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
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
> 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.
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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