Legacy ImageMagick Discussions Archive

This seems to reproduce your result upon magnification inspection (however, I like the others better, personally). convert triangle_white.png \( -size 13x13 xc:red \) \ \( -clone 0 -channel RGBA -fill black -opaque none -threshold 0 \) \ -compose multiply -composite triangle_red_new4.png The third i...

Here are 3 methods that seem to work for me on IM 6.3.8 convert triangle_white.png -fuzz 20% -fill red -opaque white triangle_red_new1.png convert triangle_white.png \( -size 13x13 xc:red \) \( -clone 0 -channel RGBA -fill black -opaque none -transparent white \) \ -compose over -composite triangle_...

JPEG is a lossy format. You need to convert them to PNG or some other format that will not loose quality due to compression and make your montage in that format, but not JPEG. Or tell IM to use -quality 100 with the JPG output.

see http://www.imagemagick.org/script/comma ... hp#quality

Yes, I misunderstood the situation. Sorry. Now that I look at it more carefully, I am not sure why your original method worked at all, however, I am new to IM at 6.3.5 and don't know what it was like under 6.2.7 I assume that your white.png image is 13x13 in size and has a checkerboard background th...

The default filters for -resize have change. To get back what you had use -filter point before -resize

see http://www.imagemagick.org/Usage/resize/#filter for more info on filters for resize

Why would you want to make a grayscale image into an rgb thumbnail? It will still be gray tone even if it has 3 channels. It would be just a waste of disk space. For CMYK, you would need to convert to RGB. Try this: convert image_cmyk.jpg -colorspace CMYK -separate tmp.png convert tmp-0.png -colorsp...

I am no expert at merging animations, but the timing of the two animation (delay between frames may not be the same), which is difficult to work around. But try using -coalesce See http://www.imagemagick.org/Usage/anim_mods/ try convert \( animation1.gif -coalesce \) \( animation2.gif -coalesce \) f...

For grayscale, this should work: convert origfile.jpg -colorspace rgb -thumbnail 250x250 filethumb.jpg but I think you may need to use something else if it is CMYK. See http://www.imagemagick.org/Usage/channels/#separate http://www.imagemagick.org/Usage/channels/#combine_other as converting from CMY...

see

viewtopic.php?f=1&t=10377&p=32727&hilit=trim#p32727

You can now do something like this with my new pinbarrel script that allow you to apply barrel or pincushion distortion to an image with an arbitrary center point. See http://www.fmwconcepts.com/imagemagick/index.html I am trying to do a proper fisheye distortion, which maps the whole image into a c...

I am not sure that will work. You can try it, but then you have multiple thresholds to select. This gets very complicated. The solution I supplied earlier depended upon only two colors plus the gray road. I suspect that you may have to create transparency masks so that you can work on pairs of color...

Take a look at my recently posted script, pinbarrel, that creates or removes barrel and/or pincushion distortion. It uses -fx, which is slow, but what you will need to do also. Eventually you may be able to use distortion maps if the distortion is to be the same for all images of the same size. I am...

Once again, magick, you amaze me at the speed at which you do some of these enhancements. That is terrific.

try

convert <infile> -depth 8 <outfile.bmp>

or post your command attempts for us to review.

Also what type of input images are you starting with? Post a link to an example!

If the background color around the scanned image is relatively constant, you can try my two scripts autotrim and unrotate. You can get them at

http://www.fmwconcepts.com/imagemagick/index.html