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Improving the resolution, resize, monochrome

Posted: 2009-03-16T07:53:04-07:00
by coulon
I want to remove the dirty backgroung of an image, and make a monochrome
image with a better resolution (sheet music).

The best method I've found so far is this batch (under XP):

convert -resize "500%%" %1.jpg %1big.jpg
convert -monochrome %1big.jpg %1mono.jpg

A bigger -resize gives a better resolution, but if my source image is 1000x1200 big, the monochrome image is huge, and the batch takes minutes! Is there a more clever method?