I have used the latest stable release of imageMagick (which is ImageMagick 7.0.9-27) to run

cat index.raw12 | convert \( -size 4096x3072 -depth 12 gray:- \) \( -clone 0 -crop -1-1 \) \( -clone 0 -crop -1+0 \) \( -clone 0 -crop +0-1 \) -sample 2048x1536 \( -clone 2,3 -average \) -delete 2,3 -swap 0,1 +swap -combine test_color.png

and according to me it gave the desired output.

Will try the command itself soon but from just looking at your post: the output file is monochrome but should be color...

Plenty of still images can be found here: http://files.apertus.org/AXIOM-Beta/snapshots/

It seems that the sample point was moved in recent versions so now the samples average the four channels into one gray value.

Adding -define sample:offset=0 should fix the issue.

Best,
Herbert

Thanks Bertl for the direction.

In ImageMagick 7 we have to explicitly put -gravity SouthEast and -define sample:offset=0 to get desire simple debayer image from a raw12 as default sample point has been moved after ImageMagick 6 :.

cat test.raw12 | convert -define sample:offset=0 -gravity SouthEast \( -define sample:offset=0 -size 4096x3072 -depth 12 gray:- \) \( -clone 0 -crop -1-1 \) \( -clone 0 -crop -1+0 \) \( -clone 0 -crop +0-1 \) -sample 2048x1536 \( -clone 2,3 -average \) -delete 2,3 -swap 0,1 +swap -combine test_color.png;

Best Regards,
Ashok

Works, many thanks!

This should avoid the sample point setting:

convert \( -size 4096x3072 -depth 12 gray:portrait.raw12 \) \( -clone 0 -roll -1-1 \) \( -clone 0 -roll -1+0 \) \( -clone 0 -roll +0-1 \) -sample 2048x1536 \( -clone 2,3 -average \) -delete 2,3 +swap -combine portrait.png

and

convert \( -size 4096x3072 -depth 12 gray:image00002.raw12 \) \( -clone 0 -roll -1-1 \) \( -clone 0 -roll -1+0 \) \( -clone 0 -roll +0-1 \) -sample 2048x1536 \( -clone 2,3 -average \) -delete 2,3 -swap 0,2 -combine image00002.png

Tested on ImageMagick v7 but should work for v6 as well.
Adjust -depth12 to -depth16 for raw16 sources.

Hope this helps,
Herbert

https://wiki.apertus.org/index.php/AXIOM_Beta/Manual#Parameters updated.

hey Sebastian,
I am not getting desired output by running 2nd command. Is there some typo ?
Because on switching the last two images in the sequence. i.e -swap 1,2 gives correct output.

cat test.raw12 | convert \( -size 4096x3072 -depth 12 gray:- \) \( -clone 0 -roll -1-1 \) \( -clone 0 -roll -1+0 \) \( -clone 0 -roll +0-1 \) -sample 2048x1536 \( -clone 2,3 -average \) -delete 2,3 -swap 1,2 -combine test_color.png

What output do you get?

The first command is for raw12 files captured with swapped even/odd lines, the second command is for non swapped even/odd lines. So using the two commands on the same image will indeed create one output with wrong colors.

Ohh sorry my bad, Didn't considered 2nd condition.
Thank you for the explanation.

Regards,
Ashok