Return to Answer

-monochrome from ImageMagick is an option that uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking:

• https://stackoverflow.com/questions/15861025/how-to-convert-an-image-to-1bit-px-binary-bitmap-with-imagemagick-or-rmagick
• https://askubuntu.com/questions/9868/convert-an-image-from-grayscale-to-binary
• https://superuser.com/questions/405686/how-to-convert-a-photo-to-a-black-and-white-image-by-imagemagick
• https://superuser.com/questions/75373/convert-color-photos-of-documents-to-good-black-and-white-bitonal-images

ImageMagick convert -monochrome

The -monochrome option uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking:

• https://stackoverflow.com/questions/15861025/how-to-convert-an-image-to-1bit-px-binary-bitmap-with-imagemagick-or-rmagick
• https://askubuntu.com/questions/9868/convert-an-image-from-grayscale-to-binary
• https://superuser.com/questions/405686/how-to-convert-a-photo-to-a-black-and-white-image-by-imagemagick
• https://superuser.com/questions/75373/convert-color-photos-of-documents-to-good-black-and-white-bitonal-images

-monochrome from ImageMagick is an option that uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking.

-monochrome from ImageMagick is an option that uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking:

• https://stackoverflow.com/questions/15861025/how-to-convert-an-image-to-1bit-px-binary-bitmap-with-imagemagick-or-rmagick
• https://askubuntu.com/questions/9868/convert-an-image-from-grayscale-to-binary
• https://superuser.com/questions/405686/how-to-convert-a-photo-to-a-black-and-white-image-by-imagemagick
• https://superuser.com/questions/75373/convert-color-photos-of-documents-to-good-black-and-white-bitonal-images

-monochrome is an option that uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking.

-monochrome from ImageMagick is an option that uses some smart dithering, and makes the output much more visible than -threshold if you intend it for human consumption:

convert -monochrome signature.png out.png 

Does not make much difference for such a simple image, but for larger ones, it is striking.