Legacy ImageMagick Discussions Archive

6.7.7-10 is the current version in ubuntu ... what will be different if i install 6.8... ?

I observe different behaviour of the edge operator with version 6.6.9-7 and 6.7.7-10 :

I apply convert raw.jpg -edge 1 edge.jpg to this image
http://gop.meteo.uni-koeln.de/~hatpro/jue/tsi/problems/image_magick/raw_2.jpg

with version 6.6.9-7 i get:
http://gop.meteo.uni-koeln.de/~hatpro/jue/tsi ...

...
could do it also with lookup tables in the red and green channels of lut_RG.png

convert -size $wpan'x'$hpan xc: -channel R -fx "($cx-$rad*j/$hpan*sin(2*pi*i/$wpan))/$wraw" \
-channel G -fx "($cy+$rad*j/$hpan*cos(2*pi*i/$wpan))/$hraw" \
lut_RG.png
# do the pano
convert lut_RG.png raw.jpg ...

-type TrueColor does not help:

metadata of pan without -type TrueColor
$identify pan.jpg
pan.jpg JPEG 288x45 288x45+0+0 8-bit PseudoClass 256c 3.81KB 0.000u 0:00.000

generate pan with -type TrueColor :
$convert lutX.png lutY.png raw.jpg -fx "u[2].p{ u*$wraw , v*$hraw }" -type TrueColor pan_tc.jpg ...

i observe a change in behaviour from version 6.6.9-7 to 6.7.7-10 :

i am generating a panorama from a sky image with lookup tables, lutX.png and lutY.png
In the older version the result is in color on the newer i get a grayscale image.
The call in bash is as follows
convert lutX.png lutY.png raw ...