三维人脸数据的获取会受到成本以及可访问性的影响。通过对深度相机(如Xtion pro live)获取人脸数据过程的研究可知,它能够很容易获得彩色和深度结合(RGB-D)图。针对RGB-D图,使用局部和整体混合识别,利用局部二值的平均信息熵模式(LBEP)...三维人脸数据的获取会受到成本以及可访问性的影响。通过对深度相机(如Xtion pro live)获取人脸数据过程的研究可知,它能够很容易获得彩色和深度结合(RGB-D)图。针对RGB-D图,使用局部和整体混合识别,利用局部二值的平均信息熵模式(LBEP),快速提取RGB-D图的直方图信息和特征向量,根据不同区域在表情不同情况下的变化程度,对不同区域的识别效果赋予不同的权值,进行加权运算。实验结果表明,相比现有的二维和三维人脸识别算法,改进的LBEP算法识别率有明显的提升。展开更多
In this paper, we characterize the saturation of four universal inequalities in quantum information theory, including a variant version of strong subadditivity inequality for von Neumann entropy, the coherent informat...In this paper, we characterize the saturation of four universal inequalities in quantum information theory, including a variant version of strong subadditivity inequality for von Neumann entropy, the coherent information inequality, the Holevo quantity, and average entropy inequalities. These results shed new light on quantum information inequalities.展开更多
文摘三维人脸数据的获取会受到成本以及可访问性的影响。通过对深度相机(如Xtion pro live)获取人脸数据过程的研究可知,它能够很容易获得彩色和深度结合(RGB-D)图。针对RGB-D图,使用局部和整体混合识别,利用局部二值的平均信息熵模式(LBEP),快速提取RGB-D图的直方图信息和特征向量,根据不同区域在表情不同情况下的变化程度,对不同区域的识别效果赋予不同的权值,进行加权运算。实验结果表明,相比现有的二维和三维人脸识别算法,改进的LBEP算法识别率有明显的提升。
基金Supported by National Natural Science Foundation of China under Grant Nos.11301124,11171301the Doctoral Programs Foundation of Ministry of Education of China under Grant No.J20130061
文摘In this paper, we characterize the saturation of four universal inequalities in quantum information theory, including a variant version of strong subadditivity inequality for von Neumann entropy, the coherent information inequality, the Holevo quantity, and average entropy inequalities. These results shed new light on quantum information inequalities.
