针对不可控条件对人脸识别的影响,提出一种基于多尺度分块局部二值模式(Multi-scale Block Local Binary Patterns,MB-LBP)和Fisherfaces融合的人脸识别算法。采用适当模块大小的MB-LBP算子提取图像的纹理结构信息,得到相应的特征直方图...针对不可控条件对人脸识别的影响,提出一种基于多尺度分块局部二值模式(Multi-scale Block Local Binary Patterns,MB-LBP)和Fisherfaces融合的人脸识别算法。采用适当模块大小的MB-LBP算子提取图像的纹理结构信息,得到相应的特征直方图;通过Fisherfaces方法对MB-LBP提取的特征进行降维和分类;经由最近邻方法进行匹配识别。在ORL和Yale人脸库上进行实验,分别与其他基于LBP和MB-LBP算法的识别效果进行比对。实验结果表明,识别效率显著提高,鲁棒性更好。展开更多
We investigate the behaviors of the scalar operator and holographic entanglement entropy in the metal/superconductor phase transition with Power-Maxwell electrodynamics in a higher dimensional background away from the...We investigate the behaviors of the scalar operator and holographic entanglement entropy in the metal/superconductor phase transition with Power-Maxwell electrodynamics in a higher dimensional background away from the probe limit.We observe that the larger parameters b and q make the condensation of the scalar operator more difficult,and the critical temperature decreases more slowly as the factors increase.In the belt geometry,the value of the entanglement entropy in the metal and superconductor phases is not only related to the the strength of the Power-Maxwell field but also to the width of the strip geometry.At the phase transition point,the discontinuous slope of entanglement entropy is universal for different model factors.It turns out that holographic entanglement entropy is a powerful tool to probe the properties of the phase transition in this holographic superconductor model.展开更多
文摘针对不可控条件对人脸识别的影响,提出一种基于多尺度分块局部二值模式(Multi-scale Block Local Binary Patterns,MB-LBP)和Fisherfaces融合的人脸识别算法。采用适当模块大小的MB-LBP算子提取图像的纹理结构信息,得到相应的特征直方图;通过Fisherfaces方法对MB-LBP提取的特征进行降维和分类;经由最近邻方法进行匹配识别。在ORL和Yale人脸库上进行实验,分别与其他基于LBP和MB-LBP算法的识别效果进行比对。实验结果表明,识别效率显著提高,鲁棒性更好。
基金Supported by the National Natural Science Foundation of China (11665015)the Guizhou Provincial Science and Technology Planning Project of China (qiankehejichu-ZK[2021]yiban026)the Guizhou Province ordinary institutions of higher learning top science and technology talents Support plan of China(qianjiaohe KY[2019]062)
文摘We investigate the behaviors of the scalar operator and holographic entanglement entropy in the metal/superconductor phase transition with Power-Maxwell electrodynamics in a higher dimensional background away from the probe limit.We observe that the larger parameters b and q make the condensation of the scalar operator more difficult,and the critical temperature decreases more slowly as the factors increase.In the belt geometry,the value of the entanglement entropy in the metal and superconductor phases is not only related to the the strength of the Power-Maxwell field but also to the width of the strip geometry.At the phase transition point,the discontinuous slope of entanglement entropy is universal for different model factors.It turns out that holographic entanglement entropy is a powerful tool to probe the properties of the phase transition in this holographic superconductor model.
