What is OpenCV

OpenCV is a cross-platform computer vision library released under the BSD license (open source) and can run on Linux, Windows, Android and Mac OS operating systems. It is lightweight and efficient - it consists of a series of C functions and a small number of C classes. It also provides interfaces in Python, Ruby, MATLAB and other languages, and implements many common algorithms in image processing and computer vision.

OpenCV is written in C language, and its main interface is also C language, but it still retains a large number of C language interfaces. The library also has extensive interfaces to Python, Java and MATLAB/OCTAVE (version 2.5). API interface functions for these languages ​​can be obtained through online documentation. Now it also provides support for C#, Ch, Ruby, and GO.

OpenCV has a cross-platform mid- and high-level API including more than 500 C functions. It has no dependencies on other external libraries - although some can be used.

All new developments and algorithms use C interface. A GPU interface using CUDA was also implemented in September 2010.

OpenCV provides a transparent interface for Intel Integrated Performance Primitives (IPP). This means that if there are IPP libraries optimized for a specific processor, OpenCV will automatically load these at runtime.

Note: The code of OpenCV version 2.0 has been significantly optimized and does not require IPP to improve performance, so version 2.0 no longer provides an IPP interface.

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