Legacy ImageMagick Discussions Archive

Step 1: Resize the first image to fit in a 100x100 box. Call the result, for example, new_first.png. Step 2: My code shows how to get the actual size of new_first.png. Step 3: Resize the second image and composite the two resized images together. If you are concerned about speed, DOS script is slow....

I think this must be done in three stages. 1. Resize first file. 2. Find new dimensions of that file, each multiplied by 0.25. FOR /F "tokens=1,2" %%i in ('identify -format "%%[fx:w*0.25] %%[fx:h*0.25]" new_first.png') DO ( set NEWWI=%%i set NEWHT=%%j ) 3. Resize the second file ...

What I want with my gradient (which is from white to grey)... It isn't. You are probably using a viewer that shows transparent pixels as white. In your gradient command, "none" means "transparent black". I'm confused about what you want. Do you want any transparency in the output?

A very thorough site related to this topic: http://www.handprint.com/LS/CVS/color.html

I'm not clear what you are doing. What commands do you use currently?

In Windows, I generally find image dimensions like this:

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FOR /F "tokens=1,2" %%i IN ('identify -ping -format "%%w %%h" image.png') DO (
  set WIDTH=%%i
  set HEIGHT=%%j
)

Your third command should be something like ...

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convert blue.png gradient.png -compose CopyOpacity -composite output.png

... which will copy the transparency from gradient.png.

However, your images are not the same size, so you might want to adjust.

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convert IMG_6968.CR2 IMG_6968.jpg
sh: 1: ufraw-batch: not found

"convert" is trying to use "ufraw-batch" to read the image, but it isn't installed.

Your IM version is very old, so your version of dcraw (which reads the CR2 file) is probably also very old.

I suppose PHP doesn't report errors. Try it from the command line:

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convert IMG_6968.CR2 x.jpg

What happens?

This should do the job:

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convert in.jpg -resize 1100x600! -density 72 out.jpg

You can use "+repage":

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convert.exe tmp3.png -rotate 30 +repage rotate.png

Your "-depth 24" is wrong, unless you have a non-standard version of IM that can process 24 bit per channel per pixel.

You might try the BMP2 and BMP3 formats:

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convert alarm.png BMP2:alarm2.bmp
convert alarm.png BMP3:alarm3.bmp

I know nothing about pdfimages.

In my limited use of PDF or PS documents, using IM as a wrapper to gs is sufficient for my needs. If it wasn't, I would learn gs.

http://www.imagemagick.org/script/command-line-options.php#grayscale says the formula for "-colorspace gray" is "(R'^2 + G'^2 + B'^2) / 3.0". I trust that is incorrect, and the formula is really "sqrt ((R'^2 + G'^2 + B'^2) / 3.0)". If the documentation is correct, then ...

The required incantation for this file is "-density 300".

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convert -density 300 "2011 CAFR Introductory Section.pdf" ma.png

Many years ago, I made a captive slideshow using AS (ActionScript) under Windows. The logged-in user had no capability to do anything else.

Legacy ImageMagick Discussions Archive

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Re: Positioning images using FX calcs

Re: Positioning images using FX calcs

Re: Just apply a transparent gradient

Re: Colorspace for easy color difference comparisons

Re: Positioning images using FX calcs

Re: Just apply a transparent gradient

Re: cr2 php problem

Re: cr2 php problem

Re: Downsample JPEG to 72x72

Re: Problem rotate to .png

Re: Problem converting png to bmp

Re: scanned paper pdfs and original image extraction.

grayscale RMS

Re: scanned paper pdfs and original image extraction.

Re: fullscreen