Google Cloud Vision API fails to detect currency signs

Question

I'm using Google Cloud Vision API to do OCR in images. Currency signs can prove to be very vital in solution to my problem

Problem that I encountered: Google Cloud Vision API fails to detect certain currency signs(Rupee(₹) in my case)

I tried running the API for this image in 2 ways

I wrote a python program for detection as per the reference: documentation
The output that I got
3. 己 AB 长 Rp CHF f Ft € も元 Jy 手 le # 夫 %24
Clearly it is failing for some cases.
I tried the demo available on the website. The output that I got
C A 요 한 ₹ Л В R p * C 元 C H F } F t m 元 with the bounding boxes as

I expected them to have the same outputs. The second one is able to detect Ruppe sign(₹) which I need. I cannot use the demo version in my project. It needs to run on batch of images. Is there any workaround by which I can detect currency sign in the script also.

Can you post the json requests for each case? – InUser Jun 10 '20 at 04:55 — InUser, Jun 10 '20 at 04:55

score 1 · Accepted Answer · answered Jun 10 '20 at 11:18

1

Run it with Document_text_detection instead of text_detection

answered Jun 10 '20 at 11:18

InUser

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Yes. Worked! Thanks a lot – Beginner Jun 10 '20 at 13:51
It has worked for my case. But just out of curiosity, do you have any idea about other currency signs? Take $ sign for the case, since it was unable to detect that even by using `document_text_detection` method – Beginner Jun 10 '20 at 13:57
is it detected in the demo? – InUser Jun 10 '20 at 15:10
No not even in demo – Beginner Jun 10 '20 at 15:13
Language hints may help a bit also https://stackoverflow.com/questions/42653309/text-recognition-failing-to-recognize-currency-symbols – InUser Jun 10 '20 at 15:14

Google Cloud Vision API fails to detect currency signs

1 Answers1