Working with the ADNS-9800

A project log for PenOCR

A pen with optical text recognition that reads text aloud ... potentially helping the visually impaired

Brian ChenBrian Chen 06/09/2015 at 07:060 Comments

So I started the project today, hoping to get the camera showing some images of text on the computer. I succeeded ... partly. The camera seems to struggle with differentiating between anything but extremely bright and dark objects. In the end, I was only able to recognise bright sources of light (such as the ceiling light) as pictured below.

(instead of writing a proper application for showing shades, I decided to just send different ASCII characters over serial).

I've also tried with and without the lens, and it seems that removing the lens gives better results.