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21 September 2001 Fast hierarchical knowledge-based approach for human face detection in color images
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Proceedings Volume 4550, Image Extraction, Segmentation, and Recognition; (2001)
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China
This paper presents a fast hierarchical knowledge-based approach for automatically detecting multi-scale upright faces in still color images. The approach consists of three levels. At the highest level, skin-like regions are determinated by skin model, which is based on the color attributes hue and saturation in HSV color space, as well color attributes red and green in normalized color space. In level 2, a new eye model is devised to select human face candidates in segmented skin-like regions. An important feature of the eye model is that it is independent of the scale of human face. So it is possible for finding human faces in different scale with scanning image only once, and it leads to reduction the computation time of face detection greatly. In level 3, a human face mosaic image model, which is consistent with physical structure features of human face well, is applied to judge whether there are face detects in human face candidate regions. This model includes edge and gray rules. Experiment results show that the approach has high robustness and fast speed. It has wide application perspective at human-computer interactions and visual telephone etc.
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Jun Jiang, Jie Gong, Guilin Zhang, and Ruolan Hu "Fast hierarchical knowledge-based approach for human face detection in color images", Proc. SPIE 4550, Image Extraction, Segmentation, and Recognition, (21 September 2001);

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