png to black and white 1 bit bmp
Posted: 2010-03-23T06:07:53-07:00
Hi,
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:
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"