Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
I am new to this program.
I am trying to convert a black and white 24 bit png file to a black and white (1 bit) monocolor bmp file. So no grayscale.
Further I am only intersted in the top left part of the png file.
I must be doing something wrong because it creates the image (size and dpi are OK), but it is 256 indexed color (8bit).
Here is what I have:
Code: Select all
convert "c:\input.png" -crop 470x470+0+0 +repage -monochrome -depth 1 -type Bilevel "c:\output.bmp"
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Not sure this does any better (still type grayscale), but try
convert image.png -colors 2 +dither -type bilevel image.bmp