一, 方法:利用ios的系统的AVFoundation自带的人脸检测,dlib库和shape_predictor_68_face_landmarks模型,标记出人脸landmark的64个点,为进一步的特效打下一个基础。 二,速度:最关心的问题就是速度,经测试在本人iphone6sp(老破机)上的速度稳定在62ms每帧,基本上可以满足15fps,速度方面不理想。如果后期还有加上各种特效,想必耗时更多。 三,准确性:准确性还可以,可以检测出多个人脸和标记多个人脸地图。 四,鲁棒性:鲁棒性差些,在摇摆脑袋摆出各种姿势时,会出现人脸检测不到的现象。此问题时ios人脸检测的原因,下一步尝试把其他的人脸检测方法移植到移动端,对比下速度和鲁棒性。 五, 优化:1,进一步优化提高速度和鲁棒性;2,在此基础上开发开源的特效(换脸,贴纸,抠图等)。
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