[magick-users] Processing PSD Images

[Anthony Thyssen]

On Mon, 18 May 2009 15:44:42 +0200
Axel Rosenski <rosenski at wave-computer.de> wrote:

| Hi there, 
| 
| this is my first Post on this list and I hope you can help me. 
| 
| I'm running Imagemagick (Version: ImageMagick 6.4.3 2008-12-03 Q16 OpenMP 
| http://www.imagemagick.org) on a linux machine and I have a set of 
| Photoshopimages in varying sizes that I would like to convert into JPG.
| 
| I have to extract a clipping path, put it in the middle on a blue canvas with 
| a size of 2000x2000 pixel and save this image, resize it in the next step and 
| add a watermark image. I like to do this with one convert/composite call.
| 
| I found two (nonsatisfying) solutions:
| 
| > convert -size 2000x2000 /path/to/foto.psd[0] -flatten -resize 2000x2000 
| xc:blue -gravity center +swap -composite -write /path/to/test.jpg -resize 
| 450x450 -write /path/to/test450.jpg -resize 200x200 /path/to/test200.jpg
| 
| This creates me a canvas of 2000x2000px and resizes my images to the given 
| size. When I try to add my watermark I get a proper test.jpg, but test450.jpg 
| gets completely white.
| 
| The other solution I found out is: 
| 
| 
| >convert "foto.psd[1]" -fill "blue" -resize "2000x2000" -size "2000x2000" 
| xc:"blue" +swap -gravity "Center" -flatten -write "/path/to/test.jpg" -
| composite -gravity "center" "/path/to/watermarkimage" -resize "450x450" -write 
| "path/to/test450.jpg" -delete 1 -resize "200x200" "/path/to/test200.jpg"
| 
| With this call I have two problems:
| - the clipping path image is not centered in the middle of the image 
| - the medium and small images are not usable. 
| They have a black background with a white bar in the foreground where the 
| watermarkimage should be. I played around with some options (-draw 'color 0,0 
| floodfill' changed position of command line options).
| 
| Can anyone help me to get those two calls together?
| 
First it would have been better if you could have formated your command
into multiple lines so one major image processign step is on each line.
That makes it a LOT easier to read!

Second a canvas is NOT needed for -flatten, as it will create a canvas
as part of its processing.

Also -flatten does NOT understand -gravity.  That is a composite setting
not a image layering setting.

For info see
   Composite Geometry/Gravity   vs   Layer Canvas/Page Offsets
     http://www.imagemagick.org/Usage/compose/#geometry

Also look at examples on flattening, with canvas adjustments (using -page)
   http://www.imagemagick.org/Usage/layers/#flatten

I suggest you use -composite instead, in whcih case you will need to
generate the canvas image.

Downloading images..
| If you need an image for testing purposes you can get it at:
| 
| http://ar.nutzerverwaltung.de/foto.psd (careful, it has ~33 MB)
| The watermarkimage is available here: 
| http://ar.nutzerverwaltung.de/stempel_axel.png

I get errors with that image!
    identify: Improper image header `foto.psd' @ psd.c/ReadPSDImage/662.

So I am unable to continue, as I can't see how your 'clipping' mask is
being handled.




  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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  "I have a top secret gravely important assignment here."
  "What other kind do I ever get?"     -- Stainless Steel Rat (Revenge)
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/