Text extraction doesn't work for white writing on over a photo, but does if you invert the colors and resubmit.

[pr3sidentspence]

I'm not 100% sure I'm in the right place to report this, but: I'm testing the Demo handwriting recognition ( https://azure.microsoft.com/en-ca/services/cognitive-services/computer-vision/#handwriting ) on some vintage postcards.

I've found that I can submit an image and get no results, or nonsense results back. But if I submit the negative version of the exact same image then the results are perfect.

Original image: https://1drv.ms/u/s!As3ZytCDCPbLkIJdz5P2TCj7nRijHA
Color inverted image: https://1drv.ms/u/s!As3ZytCDCPbLkIJcytVrtB0OrmDHTg

(In this case, the text is typed but I've been using the handwriting demo because they are often hand printed.)

I thought this might provide an avenue for improvement, i.e., if the service also processed the negative of the submission and compared confidences.

[pr3sidentspence]

Hmmm... I was just showing a colleague this and now both of them are giving both results. So either I'm insane or someone's already trying to implement this? I'm probably insane either way, actually.

[pr3sidentspence]

And now it's back to the way it was originally. :)