基于皮肤探测的自动对焦(英文)

Auto-focus Based on Skin Detection

用模式识别方法选择对焦窗口 ,对成像主体是人的情况进行了详细讨论 .先对自动对焦中使用模式识别的必要性进行了深入的理论分析 ,然后讨论了具体的实现方法 .利用人类皮肤颜色分布的特点来探测图像中的皮肤区域 ;用形态学操作来去除皮肤区域中的眼睛、鼻孔、嘴巴和其他非皮肤碎片 ;最后以所得的皮肤区域作为对焦窗口应用对焦评价函数 .实验结果表明这种方法的实用性和有效性 .

Using pattern recognition to select focus windows, the primary imaging objects which are men (PIOM for short) is discussed in details. The necessity of utilizing pattern recognition in auto- focus is illustrated. The skin-color distribution characteristics are used to detect skin regions in PIOM images. Morphological operations are employed in the process to get ride of interspaces arising from eyes, nostrils, mouths and other non-skin parts among skin areas. Then the detected skin regions are chosen as the focus windows. Experimental results show the realistic applicability and efficiency of this approach.