face alignment meaning in English
工祖当
Examples
- Robust non - frontal face alignment with edge based texture
基于边缘纹理驱动模型的贝叶斯人脸定位 - Compared with the traditional shape localization algorithms , e - tdsm has the following advantages : 1 the un - warped edge - based texture can better predict the shape and is more robust to the illumination and expression variation than the conventional warped gray - level based texture ; 2 the presented bayesian network indicates the logic structure of the face alignment task ; and 3 the mutually enhanced shape and texture observations are integrated to infer the optimal parameters of the proposed bayesian network using em approach
在人脸定位问题中，传统的纹理的定义是将原图中形状包含的灰度值块通过分块仿射变换映射到平均形状中，从而得到定长的纹理表示。但是，对于侧脸图像，由于自遮挡的原因，由平均形状决定的网格并不能反映所有形状的二维拓扑结构，这样得到的纹理表示很多地方会出现被遮挡部分的纹理无法得到的问题。 - This paper proposes a new algorithm , called edge - based texture driven shape model e - tdsm , for non - frontal face alignment task . first , the texture is defined as the un - warped edge image contained in the shape rectangle ; then , a bayesian network is constructed to describe the relationship between the shape and texture models ; finally , expectation - maximization approach is utilized to infer the optimal texture and position parameters from the observed shape and texture information
姿态的变化使得人脸形状的分布变得非常复杂，特别是侧脸图像，由于自遮挡的原因，采用单一的模型有时候很难表达人脸形状的分布同时，再加上光照的变化，一方面使得人脸轮廓容易和背景混淆，另一方面有可能会在人脸上形成伪边界，使得轮廓线被错误地定位到这些伪边界线上。