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image2text - image to text converter
image2text [options]
-r reverse colours
-p preserve ratio (used with -H and -W)
-d threshold rgb value to consider white/black
-h height resize height by this amount
-w width resize width by this amount
-H pixels resize height to this many pixels
-W pixels resize width to this many pixels
-i imagefile png image file
-t textfile text file
-v verbose output
image2text converts a png or jpeg image into a text file similar to the image. If the image is not already black and white, it attempts to convert the image to black and white. It can also resize the image.
convert image.png to text in text.txt file
image2text -i image.png -t text.txt
convert image.png to text in text.txt file after resizing height by 80%
image2text -i image.png -t text.txt -h.8
convert image.png to text in text.txt file after resizing height by 40% and resizing width by 40% (this will produce image similar to previous sample but have as big)
image2text -i image.png -t text.txt -h.4 -w.5
convert image.png to text in text.txt file after resizing height to 89 pixels and preserving ratio of width to height, then resizing height to 80% of 89, and converting the image to b&w based on a threshold of 50
image2text -i image.png -t text.txt -H89 -p -h.8 -d50
a character of text is higher than it is wide, unlike a pixel which has the same height as width, so you will want to scale the height of the image in relation to the width. i've found that a ratio of .8:1 works well, hence the ``-h.8'' and ``-w.5 -h.4'' used above.