Legacy ImageMagick Discussions Archive

Looks to me from the link you showed that the coloration is like saturation and the abstraction is possibly like contrast (would need more examples or info to know with more confidence). In IM commands you can try to simulate those using the -modulation to control saturation (as well as brightness a...

I am no expert on the use of Bezier curves in IM, but see

http://www.imagemagick.org/Usage/draw/#cubic

for details on the use of control points, which you appear not to have used.

I am not sure I understand what you want to do. What exactly do you want to remove? Could you explain further and possibly post links to some examples?

If you are using IM 6.3.9.1+ you can now use string formats to get the average or mean value. See http://www.imagemagick.org/script/command-line-options.php?#format redave=`convert <image> -channel Red -separate -format "%[mean]" info:` echo $redave etc for Green and Blue Alternately, you ...

You can also try using my script autotrim. It uses a slightly different approach, but the end result is similar. You can get it at http://www.fmwconcepts.com/imagemagick/index.html

You can composite images together using the -geometry ... -compose ... -composite command. You need to create a background image that is transparent first of the final size. To make a transparent background use: convert -size WIDTHxHEIGHT xc:none <outputimage> The -geometry command tells you where t...

IM has a -distort perspective function that allows you to specify four sets of points (presumably the corners in the source and destination images) and do a perspective warp of the image. You probably want the +distort form or the use of the "-set option:distort:viewport {geometry_string}"...

Actually I have no idea what is really going on, but have you tried to upgrade to the latest version of IM 6.3.9-x. The folks at IM are constantly improving things and perhaps there was some change made recently that has fixed an issue with the use of Ghostscript. You might also search the archives ...

You can now do something like this with my new bubblewarp script that allows you to apply warp an image onto a hemisphere. It is not the same as a true 180 degree field of view fisheye effect, but similar. http://www.fmwconcepts.com/imagemagick/index.html I hope to do a proper fisheye distortion, bu...

put the input image before the -flop and also regarding the loss, save the image in non-jpeg format such as png or use -quality 100

convert image.jpg -flop image1.png

or

convert image.jpg -flop -quality 100 image2.jpg

(x-xc)=r*cos(pi*angle/180)
(y-yc)=r*sin(pi*angle/180)

where

xc=x coordinate of center of image
yc=y coordinate of center of image

r=radius
angle=bearing in degrees

I have been using -monitor to report the progress in scripts that especially use -fx. I notice that the progress readout seems to progress exponentially rather than linearly. For example it might read 0%, 3%, 6%, 12%, 25%, 50%, 100%. Is this intended? Would it be possible to make the readout more li...

I don't see any difference between the two methods:

compare -metric rmse triangle_red_new.png triangle_red_new1.png null:
0 (0)

Yes, it probably does double the alpha channel effect as I had to extract the alpha channel and reapply it to the result of the first multiply. I did not do an exact analysis, but simply a visual comparison and it looked the same. As to why the second does not give the same as the first, I will have...

OK, here it is - two ways: convert \( -size 13x13 xc:red triangle_white.png -compose multiply -composite \) \ \( triangle_white.png -channel A -negate -separate \) \ -compose Copy_Opacity -composite triangle_red_new.png convert triangle_white.png \ \( -clone 0 -size 13x13 xc:red -compose multiply -c...