[magick-users] montage usage question
Fred Weinhaus
fmw at alink.net
Wed Mar 12 10:16:49 PDT 2008
>thank you so much Fred, that did the trick! A follow-up question if you
>know it,
>
>I am noticing some weirdness in the rendered image. What I mean is, the
>colors are not right. I have a solid green color of #48BD60 on my
>original (pre-joined) images... however, the joined output is not
>percisely this value.... it is close, but at least 3 or 4 variations of
>that hex code are in the output file :( Do you know why this may be the
>case? Is there some setting to make it create a perfect rendition?
>
That is because you have taken two jpg images and created another jpg
image. Each time you create a new jpg there is some further
compression. IM compresses by default about 80% quality. So you
change the colors some. The best thing would be to take your original
images and form a new one in a different format such as png which
does not compress by default. Alternately you can tell IM to make the
final image at 100% quality level.
convert image1.jpg image2.jpg +append image3.png
convert image1.jpg image2.jpg +append -quality 100 image3.jpg
See the documentation that Anthony Thyssen has developed at
http://www.imagemagick.org/Usage/reference.html
http://www.imagemagick.org/Usage/
and of course also
http://www.imagemagick.org/script/command-line-options.php
>Lastly, I had one seperate question which should shore me up. (Thank you
>for this group---and your time!). Let's say I have a single 200x200
>image, and want to create a 300x200 image using that 200x200 image,
>centered within that new space, & with a specified color value for it
>(the extra 50 pixels on each side of the input image being created). How
>would this be done? :-) :-)
convert image1.jpg -bordercolor "whatevercolor" -border 50x50 image2.jpg
for colors see
http://www.imagemagick.org/script/command-line-options.php#fill
http://imagemagick.org/script/color.php
also another place to get help is at
http://www.imagemagick.org/discourse-server/
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