Legacy ImageMagick Discussions Archive

Hi guys
i have some B&W TIFs like this.
All the with on the bottom of the tif has the index-value 1.

Is there an easy way to change this Index to 0?

thx snibgo

just before reading your answer i got another solution!

magick maske.png -negate hrot.png -compose plus -composite out.png

but you are right i forgot the Version....for testing 7.0.8-Q16 on Win7 and later for automation some actuall version of Magick.net
but now everything is fine ...

Hi Guys,
since several days i try to masked 2 Black-White-TIFs with each other. But i didn't come to an end!
i Tried something with -clip-mask and composite but until now i didnt get the result i want to (see below; was created with some old Linux based software)
I have the following tifs:
the ...

SO it seems, that for big files its neccessary to youe a 64bit platform!

But now i found another smaller Images which produces the same error!
Is it possible, that you can test it again?
I put them to dropbox.

i found the problem!
It was the VS-Project itself!

In the "properties" under the point platform i choosed "Any CPU" and the radio-button "prefer 32 bit" was checked!
If je uncheck this button it works!
Same effect comes when choosing "64bit" as platform. This works, but the 32bit platform didn't ...

ok
i tried again, with magick.net 7.6.0 with this code:
using (MagickImageCollection images = new MagickImageCollection())
{
MagickImage redimage = new MagickImage(@"E:\luna\magick_test\NOBN\R\ROBN2184.jp2");
images.Add(redimage);
MagickImage greenimage = new MagickImage(@"E:\luna\magick_test ...

ok i'll test it again.

which version of magick.net did you used?

Hi
After a month of holiday, i just wanted to know if it was possible to reproduce my problem?

So
can you reproduce this problem?

Are the files ok for testing?
i also got some smaller files, and with them the combing works!

not working:
original tif : 770mb and 1GB
seperated jp2 (quality 45): between 70 and 100mb

working:
original tif: 400mb
seperated jp2 (quality 45): between 15 and 30 mb

Hi,
i put the files to dropbox for better handling.

I know that normally the 4th channel ist the alpha channel, but in our case we use this channel as the infrared channel. and as i can say, separating these 4 channels works fine!

Hi guys,

here you can found the original image i used to separate into the 4 chanels:
R
G
B and
infrared

afterwards i tried to combine them to one image. But then i got that error above!

Hi guys,

i got an error when trying to combine some jp2 files.
These files are created by separating the chanels of a tiff-file using magick.net.
But now i wanted to go the way back and combine these separated chanels, but it doesn't work! I got the Errormessage :

"Failed to decode the codestream ...

thx for the fast answer

Hi guys,

is there a possibility to get the colordepth of an image?
For example i have a 4 channel tif-file and each channel has 8bit.
So is there a function which gives me 32 as the colordepth of the image?

thanks