Legacy ImageMagick Discussions Archive

As far as I know, JMagick is a different tool to ImageMagick. This is an ImageMagick forum. For help on JMagick, try a JMagick forum.

set INFILE=liquid.jpg set OUTFILE=liquid_resized.jpg set MAX_HEIGHT_INCHES=3 set MAX_WIDTH_INCHES=5 FOR /F "usebackq" %%i IN (`identify -format "MAX_WIDTH_PIXELS=%%[fx:resolution.x*%MAX_WIDTH_INCHES%]\nMAX_HEIGHT_PIXELS=%%[fx:resolution.y*%MAX_HEIGHT_INCHES%]" %INFILE%`) DO @set ...

Some more information would be useful.

What is your platform? What version of IM? Exactly what IM command are you using? What is the error message? Can you provide a sample input file?

identify -verbose input.png

will write the palette to stdout. Your script could then search for the colour.

The greatest difficulty seems to be separating the bottom drop from the background. Many possibilities exist, depending on what you want to do with the output images. For example: convert 1zx8jrs.jpg -colorspace gray -noise 2 -median 2 ( +clone -adaptive-blur 10x3 ) -compose difference -composite -t...

As far as I know, IM has no options to directly resize in inches or centimetres. You need to do the calculations in a script.

"-adaptive-blur" might do the trick, or "-level" or a simple threshold. You might post a couple of adjacent frames, so we can see the noise and offer suggestions.

I suggest you try running an ffmpeg command directly from the command line, both as su root and su data. That will indicate whether you have a problem within ffmpeg or IM. ffmpeg -i /tmp/sunset/*.jpg /tmp/sunset/sunset/mp4 If that works (as data), build up to the fuller comand. Two-pass ffmpeg creat...

I haven't bottomed-out the best method of getting IM and ffmpeg to work well in Unix (Ubuntu 9.04), but a couple of tricks: 1: $ export LD_LIBRARY_PATH=/usr/local/lib/ 2: install ffmpeg first, then IM. Where did you get that line for delegates.xml from? That decode="ffmpeg" looks dodgy, bu...

Whenever we convert [from CMYK] to PNG, we have loss of color. How do you know? What you mean is, when you view the CMYK file with one program that converts from CMYK to RGB for the screen, you get a different result from viewing an RGB file created by ImageMagick. Both programs are converting from...

These aren't animations, apparently.

garethk: can you post a link to a tif and the "bad" gif it creates? And tell us the exact command, and the IM version and platform.

Yes, whoops, my bad typing, lines.png is really a bmp file. It doesn't effect the result. Why is one image hex BA, where the other is hex BB? Because sRGB transformation isn't a simple gamma conversion. See http://www.imagemagick.org/script/command-line-options.php under "colorspace" for t...

convert Grad1_rgb.jpg -thumbnail 350 gth.jpg

works fine for me (Windows 7, IM 6.6.0-8). Does a simple "-resize" work for you? Can you post a "bad" result?

Input image (alternating black and white lines): http://www.snibgo.org/images/lines.png convert lines.png -resize 50%% lines1.png lines1.png: http://www.snibgo.org/images/lines1.png convert lines.png -gamma 0.45454 -resize 50%% -gamma 2.2 lines2.png lines2.png: http://www.snibgo.org/images/lines2.pn...

I thought that was the function of "-set colorspace", ie
does the resize assuming the pixels of in.png are sRGB, so it will do (roughly) the "-gamma 0.45" before the resize and "-gamma 2.2" after.