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Top 23 C++ Image processing Projects
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OpenCV is the world's largest open-source computer vision library, supported by the non-profit organization, Open Source Computer Vision Foundation. It offers a wide range of algorithms that cover a variety of tasks, from basic image processing to advanced object recognition and motion analysis.
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How does it compare to Tesseract? https://github.com/tesseract-ocr/tesseract
I use ocrmypdf (which uses Tesseract). Runs locally and is absolutely fantastic. https://ocrmypdf.readthedocs.io/en/latest/
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deeplake
Deeplake is AI Data Runtime for Agents. It provides serverless postgres with a multimodal datalake, enabling scalable retrieval and training.
Project mention: What I Learned Comparing Zilliz Cloud and Deep Lake for Scalable Vector Search | dev.to | 2025-06-09As I scaled up a semantic search engine for multi-modal content, I found myself at a fork in the road. Should I lean into a purpose-built vector database like Zilliz Cloud, or embrace a more flexible data lake approach with Deep Lake? These tools promise vector search at scale—but they come from fundamentally different architectural philosophies.
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OpenMVG (open Multiple View Geometry)
open Multiple View Geometry library. Basis for 3D computer vision and Structure from Motion.
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DALI
A GPU-accelerated library containing highly optimized building blocks and an execution engine for data processing to accelerate deep learning training and inference applications.
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jpegview
Fork of JPEGView by David Kleiner - fast and highly configurable viewer/editor for JPEG, BMP, PNG, WEBP, TGA, GIF and TIFF images with a minimal GUI. Basic on-the-fly image processing is provided - allowing adjusting typical parameters as sharpness, color balance, rotation, perspective, contrast and local under-/overexposure.
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CV-CUDA
CV-CUDA™ is an open-source, GPU accelerated library for cloud-scale image processing and computer vision.
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Website: https://wsrv.nl/
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OpenImageIO
Reading, writing, and processing images in a wide variety of file formats, using a format-agnostic API, aimed at VFX applications.
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Simd
C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, NEON, SVE for ARM, HVX for Hexagon (by ermig1979)
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https://play.google.com/store/apps/details?id=com.akylas.doc...
If you have any feedback, ideas,... please feel free to contribute at https://github.com/Akylas/OSS-DocumentScanner
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RealSR-NCNN-Android
An Android application for super-resolution & interpolation. Contains RealSR-NCNN, SRMD-NCNN, RealCUGAN-NCNN, Real-ESRGAN-NCNN, Waifu2x-NCNN, Anime4kcpp, nearest, bilinear, bicubic, AVIR...
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ITK
Insight Toolkit (ITK) -- Official Repository. ITK builds on a proven, spatially-oriented architecture for processing, segmentation, and registration of scientific images in two, three, or more dimensions.
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scantailor-advanced
ScanTailor Advanced is the version that merges the features of the ScanTailor Featured and ScanTailor Enhanced versions, brings new ones and fixes.
Sounds like a job for ScanTailor. I'm not aware of an actively developed alternative. The version on my system comes from ScanTailor Advanced [3].
[1]: https://scantailor.org/
[2]: https://github.com/scantailor/scantailor
[3]: https://github.com/4lex4/scantailor-advanced
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SimpleITK
SimpleITK: a layer built on top of the Insight Toolkit (ITK), intended to simplify and facilitate ITK's use in rapid prototyping, education and interpreted languages.
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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++ Image processing discussion
C++ Image processing related posts
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Show HN: Free, In-Browser PDF Editor
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Computer vision for code: What PVS-Studio saw in OpenCV
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Deploying weserv/images with Docker
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Grayskull: A tiny computer vision library in C for embedded systems, etc.
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Augmented reality 3d viewer
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Tesseract Open Source OCR Engine
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🔎 What is OCR? and How Can You Use It Without Any ML Experience?!
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A note from our sponsor - SaaSHub
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Index
What are some of the best open-source Image processing projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | OpenCV | 87,815 |
| 2 | tesseract-ocr | 74,518 |
| 3 | deeplake | 9,153 |
| 4 | Halide | 6,537 |
| 5 | OpenMVG (open Multiple View Geometry) | 6,424 |
| 6 | DALI | 5,707 |
| 7 | VTK | 3,158 |
| 8 | jpegview | 2,853 |
| 9 | CV-CUDA | 2,693 |
| 10 | images | 2,668 |
| 11 | OpenImageIO | 2,299 |
| 12 | Simd | 2,252 |
| 13 | OSS-DocumentScanner | 2,141 |
| 14 | RealSR-NCNN-Android | 2,012 |
| 15 | eos | 1,974 |
| 16 | CImg | 1,677 |
| 17 | ITK | 1,621 |
| 18 | scantailor-advanced | 1,421 |
| 19 | SimpleITK | 1,061 |
| 20 | Converseen | 1,026 |
| 21 | image_pipeline | 946 |
| 22 | hiptext | 781 |
| 23 | Video++ | 736 |
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