You will get Custom OCR System with ML.NET and OpenCV
Project details
Need to extract text from images, PDFs, or scanned documents? I’ll build a custom OCR solution using ML.NET, OpenCV, and domain-specific logic tailored to your exact needs. Whether it’s clean English text, complex non-English scripts, or symbol-heavy scientific content — I’ll deliver a high-accuracy, structured OCR engine.
Machine Learning Tools
OpenCV, Tesseract OCRWhat's included
| Service Tiers |
Starter
$800
|
Standard
$2,500
|
Advanced
$12,000
|
|---|---|---|---|
| Delivery Time | 5 days | 15 days | 45 days |
Number of Revisions | 3 | 8 | 9 |
Number of Model Variations | 1 | 2 | 5 |
Number of Scenarios | 1 | 2 | 4 |
Number of Graphs/Charts | 0 | 1 | 3 |
Model Validation/Testing | - | ||
Model Documentation | |||
Data Source Connectivity | - | ||
Source Code | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100
Additional Model Variation
(+ 7 Days)
+$300
Additional Scenario
(+ 10 Days)
+$1,000Frequently asked questions
11 reviews
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DL
David L.
Apr 21, 2025
BIM Application Development
Great job! Mehendra is a real pro!
DL
David L.
Mar 5, 2025
C# Full Stack Engineer
Great work! Mehandra is very committed to his work!
MP
Martin P.
Apr 11, 2024
Time-tracking app api
I wholeheartedly recommend Mahendra Goyal for any desktop development project. Mahendra has been an integral part of our team for quite some time, working diligently on a complex desktop application. His expertise, attention to detail, and commitment to excellence have consistently impressed us.
Throughout our collaboration, Mahendra demonstrated exceptional patience, understanding, and professionalism, even when faced with challenges. His ability to communicate effectively and adapt to evolving project requirements made the entire process seamless and enjoyable.
The quality of Mahendra's work speaks for itself. He consistently delivered high-quality solutions that exceeded our expectations. His dedication to delivering results and ensuring client satisfaction is truly commendable.
If you're in need of top-notch desktop development services, Mahendra Goyal is the freelancer you can trust. Thank you, Mahendra, for your outstanding contributions to our project, and I highly recommend your services to others seeking excellence in desktop development.
Throughout our collaboration, Mahendra demonstrated exceptional patience, understanding, and professionalism, even when faced with challenges. His ability to communicate effectively and adapt to evolving project requirements made the entire process seamless and enjoyable.
The quality of Mahendra's work speaks for itself. He consistently delivered high-quality solutions that exceeded our expectations. His dedication to delivering results and ensuring client satisfaction is truly commendable.
If you're in need of top-notch desktop development services, Mahendra Goyal is the freelancer you can trust. Thank you, Mahendra, for your outstanding contributions to our project, and I highly recommend your services to others seeking excellence in desktop development.
AK
Aron M K.
Oct 10, 2023
C# Full Stack Engineer
RL
Remylou L.
Jun 13, 2022
Tme tracking - desktop app
This was our first software development project and working with Mahendra went very smooth from the beginning to an end. He was able to explain everything to us clearly and was open to all our suggestions, and he was very responsive in communication. We highly recommended his services.
About Mahendra
Algorithmic Systems Engineer | .NET, CUDA, AI/ML
100%
Job Success
Noida, India - 7:30 am local time
My career has been built on tackling projects where mathematics, performance, and reliability collide. From deep computational geometry to real-time imaging pipelines and AI breakthroughs, I bring algorithmic thinking into production-grade systems.
What I Make Possible
Computational Geometry & Simulation (CUDA):
Architected a real-time electric field line simulator on GPUs, handling the dense math behind vector fields and parallel kernels. Delivered BIM-style geometry evaluation and Bezier-based drawing tools for clients who needed accuracy, interactivity, and stability at scale.
Interactive Geometry Tools:
Distinguished performer in delivering CAD-like solutions — room planning engines, floorplan canvases, and curve editors that match the sophistication of industry BIM systems.
AI/ML (Computer Vision & OCR):
Outperformed Tesseract and other baselines in image classification and OCR by building custom ML.NET and PyTorch pipelines. Leveraged trained models for chemistry-focused OCR, decoding molecular diagrams and classifying scientific data that generic engines couldn’t touch.
MVVM & Real-Time Imaging:
Built a live-view imaging pipeline in C#/WPF with sub-30ms latency, sustaining real-time overlays without freezing the UI by combining async/await with multithreading. I’m not just about ViewModels and data binding — I handle what most developers would call impossible to fold into MVVM, structuring complex rendering logic, continuous device streams, and performance-critical updates cleanly into responsive applications.
Backend Architecture (ASP.NET Core):
Built a search engine that transformed OCR’d exam content into queryable data for JEE/Olympiad problems, returning matches and solutions with precision. Secured APIs with Microsoft Identity + JWT for robust user management.
XAML Engineering:
Designed custom bindable controls — battery meters, temperature indicators, sound meters — powered directly by live camera and device data. Beyond templates, I create reusable controls that extend the XAML ecosystem.
Algorithm Design:
From extracting clean outlines from noisy contours to detecting bonds in chemical structures, I specialize in solving problems where raw data needs to become usable intelligence.
Security & DevOps:
Full-stack capability in authentication/authorization, user management APIs, and CI/CD pipelines to keep delivery seamless and production-ready.
Beyond the Obvious
If you can imagine extracting complex geometrical details from a live camera feed, training an AI model on that data, and rendering it in real-time with OpenGL/WebGL/WPF — I can deliver it or even make it interactable. This is just a mad example; the possibilities are much wider — not limited to camera or geometry, but really about what you can imagine when these skills combine, powered by my foundation in mathematics, computational geometry, CUDA, and AI.
Recognition
I am Expert-Vetted on Upwork, officially ranked among the top 920 freelancers worldwide in 2024 — a distinction far more selective than “top 1%.” This represents consistent success on high-stakes, algorithm-heavy projects with global clients.
Skills & Tools
C#, .NET, ASP.NET Core, REST APIs, Microsoft Identity, JWT Authentication, SignalR, EF Core, LINQ, MongoDB, Azure, Docker, Microservices
WPF, WinUI 3, UWP, Uno Platform, MAUI, XAML, Custom Controls, MVVM, Real-Time Imaging, UI/UX for Desktop
C++, CUDA, GPU Acceleration, High-Performance Computing (HPC), Parallel Computing, OpenGL, GLSL, CUDA-OpenGL Interoperability
Computational Geometry, Physics Simulation, Algorithm Design, Contour Extraction, Data Structures & Optimization
Machine Learning, Deep Learning, Computer Vision, OCR, Data-Driven Modeling, PyTorch, TorchVision
Performance Optimization, Clean Architecture, Multithreading, Async/Await, CI/CD Pipelines, DevOps
Steps for completing your project
After purchasing the project, send requirements so Mahendra can start the project.
Delivery time starts when Mahendra receives requirements from you.
Mahendra works on your project following the steps below.
Revisions may occur after the delivery date.
Analyze Sample Data and Requirements
I will review your input documents, define the OCR target language/symbols, and finalize the output structure and accuracy goals before building the recognition pipeline.