Building Computer Vision Projects with OpenCV 4 and C++

How the text API works

The text API implements the algorithm that was proposed by Lukás Neumann and Jiri Matas in the article Real-Time Scene Text Localization and Recognition during the computer vision and pattern recognition (CVPR) conference in 2012. This algorithm represented a significant increase in scene text detection, performing state-of-the art detection both in the CVPR database, as well as in the Google Street View database. Before using the API, let's take a look at how this algorithm works under to hood, and how it addresses the scene text detection problem.

Remember: The OpenCV 4.0 text API does not come with the standard OpenCV modules. It's an additional module that's present in the OpenCV contrib package. If you installed ...