Converting tiff to mode 1 bit images

Question

Is it possible to convert a tiff image to mode 1-bit image using command line tools. I saw it can be done with gimp but I need to run a script so I prefer a solution using packages like imagemagick etc

Answer 1

If the image contents is already black and white, and you just need to convert, use:

convert input.tif -depth 1 output.tif

If you also require to threshold the image, use something like:

convert input.tif -separate -black-threshold 128 -depth 1 output.tif