Text detection and recognition by Lluis Gomez
HDR by Fedor Morozov and Alexander Shishkov
KAZE/A-KAZE by Eugene Khvedchenya, the algorithm author Pablo Alcantarilla and some improvements by F. Morozov.
Smart segmentation and edge-aware filters by Vitaly Lyudvichenko, Yuri Gitman, Alexander Shishkov and Alexander Mordvintsev
Car detection using Waldboost, ACF by Vlad Shakhuro and Nikita Manovich
TLD tracker and several common-use optimization algorithms by Alex Leontiev
Matlab bindings by Hilton Bristow, with support from Mathworks.
Greatly extended Python bindings, including Python 3 support, and
several OpenCV+Python tutorials by Alexander Mordvintsev, Abid Rahman
and others.
3D Visualization using VTK by Ozan Tonkal and Anatoly Baksheev.
RGBD module by Vincent Rabaud
Line Segment Detector by Daniel Angelov
Many useful Computational Photography algorithms by Siddharth Kherada
Shape descriptors, matching and morphing shapes (shape module) by Juan Manuel Perez Rua and Ilya Lysenkov
Long-term tracking + saliency-based improvements (tracking module) by Antonella Cascitelli and Francesco Puja
Another good pose estimation algorithm and the tutorial on pose estimation by Edgar Riba and Alexander Shishkov
Line descriptors and matchers by Biagio Montesano and Manuele Tambourin
Myriads of improvements in various parts of the library by Steven Puttemans; thank you a lot, Steven!
Several NEON optimizations by Adrian Stratulat, Cody Rigney, Alexander Petrikov, Yury Gorbachev and others.
Fast foreach loop over cv::Mat by Kazuki Matsuda
Image alignment (ECC algorithm) by Georgios Evangelidis
GDAL image support by Marvin Smith
RGBD module by Vincent Rabaud
Fisheye camera model by Ilya Krylov
OSX framework build script by Eugene Khvedchenya
Multiple FLANN improvements by Pierre-Emmanuel Viel
Improved WinRT support by Gregory Morse
Latent SVM Cascade by Evgeniy Kozhinov and NNSU team (awaiting integration)
Logistic regression by Rahul Kavi
Five-point pose estimation algorithm by Bo Li