Shape recognition specialist for simple OCR

Closed - This job posting has been filled and work has been completed.
Web, Mobile & Software Dev Other - Software Development Posted 2 years ago

Hourly Job

More than 30 hrs/week
Less than 1 month

Expert Level

I am willing to pay higher rates for the most experienced freelancers


We need someone that can program a rotation and scale invariant shape recognition algorithm for a OCR application. This algorithm should be implemented in C++ with OpenCV compilable for a linux OS (ubuntu).

The algorithm will receive as input an image and it will return the decoded number, for example:

./process-image sample001.jpg

Attached to the job posting is the image database to be used for training / testing purposes. Anyone who wants to apply for this job should be able code an algorithm that achieves at least a 95% accuracy. I strongly recommend you test your algorithms locally and only bid if you have an algorithm that will work.


To apply for this job you need to have either a very strong profile and feedback in computer vision / image processing or send attached the confusion matrix for the 9 classes in the image file obtained by using your algorithm (use any classification algorithm you like, we don't need this part implemented).

Please if you don't know what a confusion matrix is, it is best you do not apply.

computer vision, image processing, pattern recognition, ocr, c++, opencv

About the Client

(4.88) 7 reviews

South Korea
Suwon 04:40 PM

12 Jobs Posted
67% Hire Rate, 1 Open Job

$9,883 Total Spent
11 Hires, 2 Active

$24.77/hr Avg Hourly Rate Paid
361 Hours

Member Since Apr 20, 2013