ImageEn for Delphi and C++ Builder ImageEn for Delphi and C++ Builder

 

ImageEn Forum
Profile    Join    Active Topics    Forum FAQ    Search this forumSearch
Forum membership is Free!  Click Join to sign-up
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 ImageEn Library for Delphi, C++ and .Net
 ImageEn and IEvolution Support Forum
 Recognizing numbers from camera?		  New Topic  Reply to Topic
Author Previous Topic Topic Next Topic  

amiktoha

1 Posts
Posted - Mar 25 2020 :  09:59:36  Show Profile  Reply
Can you have demo which detects and recognize numbers(5,6 or 7 digits on object) from camera?
I have some objects in which numbers is drawed and I want to recognize numbers in object when they moving from camera?

Thank you

xequte

38723 Posts
Posted - Mar 25 2020 :  20:15:40  Show Profile  Reply
Hi

Can you attach an image showing the type of numbers you are talking about?

Nigel
Xequte Software
www.imageen.com
Go to Top of Page

xequte

38723 Posts
Posted - Mar 26 2020 :  17:26:30  Show Profile  Reply
Thanks.

IEVision uses OpenCV for object detection and Tesseract for OCR.

The problem here is that there is a lot going on in the image, so if you OCR the whole thing it will be:
- slow
- lots of false data

This is the OCR of the whole image:

R |
# %“7 k \\\
B . S \“,
B2 & P
y } L -
s -
Yt
(15498 B s —-—
— - ‘/[’b ~ V ‘
"“ V ‘\:\
e
S— —— h 3 B
"
N
AN
L
SHOT ON MI 9T
| LOJO RN


This is when selecting the text:

15498


There does not seem to be a good way here to automatically determine what needs to be OCR'ed to improve the process.

The other issue is orientation. Tesseract does not work well with text that is short and significantly rotated.

So, I'm afraid I don't have any good suggestions for you here.


Nigel
Xequte Software
www.imageen.com
Go to Top of Page

xequte

38723 Posts
Posted - May 30 2024 :  23:14:08  Show Profile  Reply
Hi

*** 2024 UPDATE ***

The latest version of ImageEn is likely to give you better results, by either:

- Finding the text rects using a neural network (and then passing them to the OCR engine, which now works better with oriented text)

http://www.imageen.com/help/TIEVisionNNet.html

- Parsing the image using Google Vision API

http://www.imageen.com/help/TIEGoogleVision.html


Nigel
Xequte Software
www.imageen.com
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
Jump To: