Skip to content
SPECIFICTION
Get listed

OpenPano

github.com

Free plan WindowsmacOSLinux
Visit github.com
Spec score 7.6 #13 of 23 in Panorama Stitching Software

What it is

OpenPano is a free C++ program for automatic panorama stitching, written from scratch without computer vision libraries. It offers cylinder, camera estimation, and translation modes, each with requirements for image capture or ordering. Its listed techniques include SIFT features, RANSAC-based homography or affine transformations, focal estimation, bundle adjustment, and straightening. The program supports Linux, macOS, and Windows. Build instructions use CMake and make for Linux, macOS, and WSL, and describe a Visual Studio 2015 process for Windows. Eigen and FLANN are build dependencies; libjpeg and CImg are optional image input/output components. The README recommends manually downscaling images of four megapixels or more to save time. Wide-angle images with heavy distortion may not work well unless camera parameters are used to undistort them. Memory use can be large with the default libc allocator; LAZY_READ can reduce it with a minor slowdown. The repository includes an MIT License, which permits use and distribution subject to its conditions and provides the software without warranty.

Spec sheet

Purpose
OpenPano is a C++ program for automatic panorama stitching, written from scratch without computer vision libraries.Read 4 Oct 2026 · github.com
License
The repository includes the MIT License, which grants permission to use, copy, modify, distribute, sublicense, and sell copies subject to its conditions.Read 4 Oct 2026 · github.com
Algorithms
The project lists SIFT features, RANSAC-based homography or affine transformation, focal estimation, bundle adjustment, and straightening techniques.Read 4 Oct 2026 · github.com
Build
The README gives CMake and make build instructions for Linux, macOS, and WSL, plus a Visual Studio 2015 process for Windows.Read 4 Oct 2026 · github.com
Dependencies
Build dependencies include Eigen and FLANN, while libjpeg and CImg are optional image input/output components.Read 4 Oct 2026 · github.com
Development status
The README lists Python bindings and macOS and Windows GitHub Actions among its TODOs.Read 4 Oct 2026 · github.com
Image requirements
The project says wide-angle images with heavy distortion do not work well unless camera parameters are used to undistort them.Read 4 Oct 2026 · github.com
Memory
The README describes memory consumption as large with the default libc allocator and says LAZY_READ can reduce it with a minor slowdown.Read 4 Oct 2026 · github.com
Stitching methods
It offers cylinder, camera estimation, and translation modes, each with stated image capture or ordering requirements.Read 4 Oct 2026 · github.com
Usage limits
The README recommends manually downscaling images of four megapixels or more to save time.Read 4 Oct 2026 · github.com
Warranty
The MIT license provides the software “AS IS” without warranty.Read 4 Oct 2026 · github.com
Windows support
The README cautions that the Windows build process may not work and invites pull requests to improve it.Read 4 Oct 2026 · github.com

Plans and prices

OpenPano (MIT-licensed software) Free No pricing or usage limits stated Read 4 Oct 2026 · github.com

Every OpenPano plan and price →

Strong points and limits

Strong points

  • Offers three stitching modes.
  • Lists SIFT features and bundle adjustment.
  • Supports Linux, macOS, and Windows.
  • MIT License permits use and distribution subject to conditions.

Limits

  • Windows build steps may not work.
  • Images of four megapixels or more may take longer.
  • Wide-angle distortion can cause poor results.
  • Default memory consumption can be large.

Who it suits

OpenPano suits users who want a free, buildable panorama-stitching program and can follow its image and build requirements. Its modes offer different approaches depending on how images were captured or ordered.

Verdict

OpenPano offers several stitching approaches and platform-specific build instructions. Readers should account for its image limitations, memory use, and the stated caution about its Windows build.

Where Specifiction places it

Alternatives to OpenPanoAll alternatives →