Convert -Draw breaks 1bit Tiff

[ukanalyst]

Hi all,

I'm hoping someone can help me out. I have a 1 bit TIF that I'm drawing a rectangle on using convert like this:

convert.exe ImageIn.tif -draw "rectangle 696,1484,1913,2064" ImageOut.tif

This works for many images but when I process the image in the link below, I can't open the resulting file with an image viewer suggesting some sort of corruption.

I've tried with three versions of ImageMagick including the latest:

Version: ImageMagick 7.0.4-5 Q16 x64 2017-01-21 http://www.imagemagick.org

Here's the input image:

https://www.dropbox.com/s/n0i4w2h6206dc ... n.tif?dl=0

and here's the resulting image:

https://www.dropbox.com/s/4jol1hlt62kfz ... t.tif?dl=0

I have tried using the -depth 8 switch and this creates a file I can use but the file is reported by Windows as 32bit and it's much larger in size. I have also tried using the -monochrome switch which works perfectly but I need to process Grayscale and monochrome images and want to keep the file size as small as possible.

Any help would be much appreciated!

Cheers

Dave

[magick]

Until we get a chance to properly debug your command, add the '-alpha off' option just before your output filename. That should return expected results.

[ukanalyst]

WOW, super speedy reply, thanks so much - that works perfectly!