Automated Human Face Detection Technology
For face extraction form roadside images, this algorithm used brightness values and face shape information. Firstly, we detected the skin color area by using HSI and YCrCb color models. Efficient skin color detection was achieved by using these two models. we used a connectivity and intensity difference for grouping, skin color regions further we applied shape conditions(rate, area, number and oval condition) and determined face candidate regions. We applied thresholds to region, and determined the regions as the face if black part was over 5% of the whole regions.