通过Javascript或PHP将图像转换为文本？ [重复]

Possible Duplicate:
How can I implement OCR on a website using PHP?

Are there any scripts out there to convert an image containing text into plain text, preferably using Javscript or PHP? For example, take the image below:

JPEG Image

I would like this image to be converted to simply "ABCDEFGHIJK."

Yes, this is called Optical Character Recognition (OCR) and there are lots of libraries available for most languages.