采用多重特征蒙板的人像皮肤美化技术

Portrait skin beautification technology using multiple feature masks

为了解决现有人像皮肤美化技术中出现的细节模糊以及特征丢失问题,提出一种基于构建多重特征蒙板的人像皮肤美化技术.第一重蒙板为利用高反差保留和强光迭加构建的面部显著瑕疵特征蒙板,基于该蒙板可预先去除人像面部的显著瑕疵;第二重蒙板为利用肤色检测构建的人像背景特征蒙板;第三重蒙板为利用Face++算法构建的面部关键区域特征蒙板;第二、三重蒙板的结合使用可以解决人像的背景特征及面部关键区域特征由于后续滤波处理而变模糊的问题;第四重蒙板为利用高反差保留构建的面部立体视觉控制蒙板,该蒙板可在之前的皮肤美化处理基础上还原人像的面部立体视觉特征.实验结果表明,该技术使用较小的皮肤美化系数即可去除瑕疵,并能在皮肤美化系数较大的情况下保留人像关键区域以及立体细节等真实感信息特征,从而解决人像皮肤美化过程中细节清晰度与瑕疵去除程度无法兼得的矛盾,最终达到人像美化的目的.

Portrait skin beautification technology using multiple feature masks was proposed to solve detail blurring and character losing problem in existing portrait skin beautification technologies.The first mask was called facial apparent blemish feature mask.This mask was made up of high pass and superposition of hard light,which was used for removing apparent facial blemishes beforehand.The second mask called portrait background feature mask was made up of skin color detection.The third mask called facial key feature mask was made up of Face++ algorithm.The second mask along with the third mask can help to solve the problem that filtering may blur facial key features and portrait background features.The fourth mask called stereo vision control mask was made up of high pass.This mask can restore facial stereo vision features after portrait skin beautification.Experimental results show that this method could wipe off facial blemishes by setting a smaller portrait skin beautification coefficient and retain realistic features,such as facial key features,as well as facial stereoscopic effect with a larger portrait skin beautification coefficient.Therefore,the contradictory problem that portrait skin beautification should either keep the clarity of details or keep the degree of removing facial blemishes was solved.This technology can achieve the purpose of facial beautification.