Anyone know of a way to invert the colors of a screenshot image before sending it to OCR? The Tesseract OCR is only trained on dark text on a light background and performs pretty horribly when it is light text on a dark background.

I found on my system Automator has the ability to invert colors of an image with a Quartz filter. So in the macro below I use the attached Automator workflow to invert the colors of the image which is screenshot. Automator invert colors.workflow.zip (33.3 KB) OCR inverted screenshot Automator Mac…

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Inverting Image Colors Before OCR

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ALYB April 26, 2021, 8:26am 3

About controlling Preview via Applescript: Help: Change the Color of the Selected Object in Preview

Inverting Image Colors Before OCR

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