Half-face detector for enhanced performance of flash-eye filter

Red-eye and flash-eye defects in still photography continue to cause problems for digital imaging devices. New variants of flash-eye defects have appeared as cameras and cameras sub-systems get smaller in size. This paper describes advanced techniques to improve the detection of flash-eye defects using a novel half-face detector. In addition to improving the detection rate, the inherent symmetries of many of the haar-like classifiers used for such a face detector allow compression of the classifier chain providing benefits for resource constrained consumer electronics devices.