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An easy-to-use standalone SIFT library written in C/C++

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The SIFT (scale-invariant feature transform) algorithm is considered to be one of the most robust local feature detector and description methods. Most of the open-source SIFT implementations rely on some 3rd-party libraries. Some of them even rely on a few different large libraries. These dependencies make the installation, compilation and usage not easy.

The ezSIFT library provides a standalone and lightweight SIFT implementation written in C/C++. The ezSIFT is self-contained, and does not require any other libraries. So it is easy to use and modify. Besides, the implementation of the ezSIFT is straightforward and easy to read.

C/C++ source code, Visual Studio 2010、2012 project, and Android NDK project are provided.

git user, please use the following link to pull the latest code:
git clone git://git.code.sf.net/p/ezsift/code ezsift-code

Please read wiki page for more details:

ezSIFT Web Site


  • SIFT keypoint detection;
  • Feature descriptor extraction;
  • Self-contained. Does not depend on other libraries;
  • Straightforward implementation, easy to use.


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Intended Audience

Science/Research, Developers, Engineering

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