libfacedetection

This is a binary library for face detection in images. The 32-bit and 64-bit dll files are provided.

examples/libfacedetect-example.cpp shows how to use the library.

Comparison on Windows

Method	Time	FPS	Misc
OpenCV	21.2ms	47.2	Yaw angle: -40 to 40 degrees. Classifier: haarcascade_frontalface_alt.xml
frontal	3.6ms	277.8	Yaw angle: -60 to 60 degrees
multiview	8.8ms	113.6	Yaw angle: -90 to 90 degrees
multiview_reinforce	13.2ms	75.8	Yaw angle: -90 to 90 degrees

640x480 image size (VGA), scale=1.2, minimal window size = 48
Intel(R) Core(TM) i7-4770 CPU @ 3.4GHz
Multi-core parallelization is enabled for the four methods.

Comparison on iPhone

Method	Time (iPhoneSE)	FPS (iPhoneSE)	Time (iPhone5S)	FPS (iPhone5S)	Misc
frontal	14.9ms	67.1	23.8	42.0	Yaw angle: -60 to 60 degrees
multiview	47.3ms	21.1	75.1	13.3	Yaw angle: -90 to 90 degrees
multiview_reinforce	83.2ms	12.0	132.4	7.6	Yaw angle: -90 to 90 degrees

640x480 image size (VGA), scale=1.2, minimal window size = 48
Multi-core parallelization is disabled.
C programming language, and no SIMD instruction is used.

Comparison on ARM

Method	Time	FPS	Misc
frontal	37.6ms	26.6	Yaw angle: -60 to 60 degrees
multiview	107.6ms	9.3	Yaw angle: -90 to 90 degrees
multiview_reinforce	174.8ms	5.7	Yaw angle: -90 to 90 degrees

640x480 image size (VGA), scale=1.2, minimal window size = 48
NVIDIA TK1 "4-Plus-1" 2.32GHz ARM quad-core Cortex-A15 CPU
Multi-core parallelization is disabled.
C programming language, and no SIMD instruction is used.

The dll cannot run on ARM. The library should be recompiled from source code for ARM compatibility. If you need the source code, a commercial license is needed.

Evaluation

FDDB: http://vis-www.cs.umass.edu/fddb/index.html

scale=1.08
minimal window size = 16
the heights of the face rectangles are scaled to 1.2 to fit the ground truth data in FDDB.

Tip

Do NOT use the functions in multiple threads. The memory used in the functions is not protected according to multiple threads.

Author

Shiqi Yu shiqi.yu@gmail.com Computer Vision Institute, Shenzhen University, China

Contributors

Shengyin Wu, Shenzhen University, China
Dong Xu, Shenzhen University, China

righere/libfacedetection