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Top 14 C++ OCR Projects
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https://www.home-assistant.io/integrations/seven_segments/
https://www.unix-ag.uni-kl.de/~auerswal/ssocr/
https://github.com/tesseract-ocr/tesseract
https://community.home-assistant.io/t/ocr-on-camera-image-fo...
https://www.google.com/search?q=home+assistant+ocr+integrati...
https://www.google.com/search?q=esphome+ocr+sensor
https://hackaday.com/2021/02/07/an-esp-will-read-your-meter-...
...start digging around and you'll likely find something. HA has integrations which can support writing to InfluxDB (local for sure, and you can probably configure it for a remote influxdb).
You're looking at 1xRaspberry PI, 1xUSB Webcam, 1x"Power Management / humidity management / waterproof electrical box" to stuff it into, and then either YOLO and DIY to shoot over to your influxdb, or set up a Home Assistant and "attach" your frankenbox as some sort of "sensor" or "integration" which spits out metrics and yadayada...
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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TNN
TNN: developed by Tencent Youtu Lab and Guangying Lab, a uniform deep learning inference framework for mobile、desktop and server. TNN is distinguished by several outstanding features, including its cross-platform capability, high performance, model compression and code pruning. Based on ncnn and Rapidnet, TNN further strengthens the support and performance optimization for mobile devices, and also draws on the advantages of good extensibility and high performance from existed open source efforts
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Project mention: Deep Learning Meets OCR: My FastAPI-Powered Document Cleaning Tool | dev.to | 2025-03-18
Windows: Tesseract Download Ideas for Usage
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AdvancedLiterateMachinery
A collection of original, innovative ideas and algorithms towards Advanced Literate Machinery. This project is maintained by the OCR Team in the Language Technology Lab, Tongyi Lab, Alibaba Group.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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deep-license-plate-recognition
Automatic License Plate Recognition (ALPR) or Automatic Number Plate Recognition (ANPR) software that works with any camera.
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Project mention: Show HN: I launched a super cheap and simple to use OCR tool for macOS | news.ycombinator.com | 2024-11-03
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ultimateMRZ-SDK
Machine-readable zone/travel document (MRZ / MRTD) detector and recognizer using deep learning
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ocr
High accurate text detection (OCR) Javascript/Typescript library that runs on Node.js, Browser, React Native and C++. Based on PaddleOCR and ONNX runtime (by gutenye)
I created a wrapper of PaddleOCR： https://github.com/gutenye/ocr
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Project mention: How to Build a Python Barcode Scanner for Windows, Linux, and macOS | dev.to | 2024-10-21
Referencing the previous document detection and MRZ recognition examples, the following code can be used to read barcodes from static images:
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ OCR discussion
C++ OCR related posts
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Show HN: I launched a super cheap and simple to use OCR tool for macOS
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OCR Solutions Uncovered: How to Choose the Best for Different Use Cases
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Mastering Text Extraction from Multi-Page PDFs Using OCR API: A Step-by-Step Guide
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OCR with tesseract, python and pytesseract
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OCR Tools for Mac, iOS and Windows
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Multimodal AI: Bridging the Gap Between Human and Machine Understanding
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I built an online PDF management platform using open-source software
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A note from our sponsor - InfluxDB
www.influxdata.com | 20 May 2025
Index
What are some of the best open-source OCR projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | tesseract-ocr | 66,835 |
| 2 | TNN | 4,509 |
| 3 | tesseract | 3,521 |
| 4 | EAST | 3,043 |
| 5 | gImageReader | 1,754 |
| 6 | AdvancedLiterateMachinery | 1,714 |
| 7 | Paddle2ONNX | 810 |
| 8 | deep-license-plate-recognition | 569 |
| 9 | dpscreenocr | 256 |
| 10 | ultimateMRZ-SDK | 191 |
| 11 | gazou | 97 |
| 12 | ocr | 83 |
| 13 | EasyOCR-cpp | 55 |
| 14 | python-mrz-scanner-sdk | 6 |
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InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com