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基于特征点矢量与纹理形变能量参数融合的人脸表情识别

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电子与信息学报 2013年第10期35卷 2403-2410页

作者：易积政毛峡 ishizuka mitsuru 薛雨丽北京航空航天大学电子信息工程学院北京100191 Department of Information and Communication Engineering University of Tokyo Japan

人脸表情识别是人机交互领域的研究热点和难点之一。为了有效去除由于个体差异而造成的表情特征的差异,该文首先基于特征点矢量提出特征点距离比例系数;其后,又给出纹理形变能量参数的概念;最后,将二者融合用于人脸表情识别。所提方法在... 详细信息

人脸表情识别是人机交互领域的研究热点和难点之一。为了有效去除由于个体差异而造成的表情特征的差异,该文首先基于特征点矢量提出特征点距离比例系数;其后,又给出纹理形变能量参数的概念;最后,将二者融合用于人脸表情识别。所提方法在Cohn-Kanade数据库及BHU人脸表情数据库进行了测试,实验结果表明该方法较传统的方法在识别率上分别提高了4.5%与3.9%。

关键词：人脸表情识别特征点矢量纹理形变能量参数径向基神经网络

基于Fisher准则与SVM的分层语音情感识别

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模式识别与人工智能 2012年第4期25卷 604-609页

作者：陈立江毛峡 Mitsum ishizuka 北京航空航天大学电子信息工程学院北京100191 Department of Information and Communication Engineering University of Tokyo Japan

针对说话人无关的语音情感识别,提出一个分层语音情感识别模型,由粗到细识别悲伤、愤怒、惊奇、恐惧、喜悦和厌恶6种情感.每层采用Fisher比率从288个备选特征中选择适合该层分类的特征,同时将Fisher比率作为输入参数训练该层的支持向量... 详细信息

针对说话人无关的语音情感识别,提出一个分层语音情感识别模型,由粗到细识别悲伤、愤怒、惊奇、恐惧、喜悦和厌恶6种情感.每层采用Fisher比率从288个备选特征中选择适合该层分类的特征,同时将Fisher比率作为输入参数训练该层的支持向量机分类器.基于北京航空航天大学情感语音数据库和德国柏林情感语音数据库,设计4组对比实验,实验结果表明,Fisher准则在两两分类特征选择上优于PCA,SVM在说话人无关的语音情感识别推广方面优于人工神经网络(ANN).在两个数据库的基础上得到类似结果,说明文中分类模型具有一定的跨文化适应性.

关键词：语音情感识别说话人无关 Fisher准则支持向量机

Rectal angiolipoma diagnosed after surgical resection: A case report

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World Journal of Gastroenterology 2007年第3期13卷 467-469页

作者： mitsuru ishizuka Hitoshi Nagata Kazutoshi Takagi Toru Horie Akihito Abe Keiichi Kubota Department of Gastroenterological Surgery Dokkyo University School of Medicine Tochigi Japan

Angiolipoma is a common benign tumor with a char- acteristic vascular component that usually occurs in subcutaneous tissue. Although lipomas are frequently encountered at colonoscopy as submucosal tumors, an- giolipomas are rarely found in the gastrointestinal tract including the large intestine. Here we report a 77-year old Japanese man who underwent transanal resection of a tumor that was diagnosed tentatively as a leiomyoma. Histologically, the tumor consisted of mature fat cells and blood vessels. Immunohistochemically, the tumor cells were negative for c-kit and HMB-45, which are consis- tently expressed in tumors such as gastrointestinal stro- mal tumor and angiomyolipoma. The tumor was there- fore diagnosed as an angiolipoma. This is thought to be the first case report of a surgically resected angiolipoma of the rectum.

关键词： Angiolipoma Angiomyolipoma Gastrointestinal stromal tumor

Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert,Mongolia

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Journal of Arid Land 2021年第7期13卷 653-673页

作者： Batjargal BUYANTOGTOKH Yasunori KUROSAKI Atsushi TSUNEKAWA mitsuru TSUBO Batdelger GANTSETSEG Amarsaikhan DAVAADORJ Masahide ishizuka Tsuyoshi T SEKIYAMA Taichu Y TANAKA Takashi MAKI Arid Land Research Center Tottori UniversityTottori 680-0001Japan Information and Research Institute of Meteorology Hydrology and EnvironmentUlaanbaatar 15160Mongolia Faculty of Engineering and Design Kagawa UniversityTakamatsu 761-0396Japan Meteorological Research Institute Japan Meteorological AgencyTsukuba 305-0052Japan

Non-erodible elements such as stones and vegetation are key to controlling wind erosion and dust emission in *** deserts are widely distributed in the Gobi Desert,but the effect of stones on wind erosion and dust emission have not been well studied,except under artificial *** this study,we evaluated the effect of stones on wind erosion and dust emission by measuring the sand saltation threshold in a stony desert in Tsogt-Ovoo in the Gobi Desert,Mongolia,under natural surface conditions during sand and dust *** quantified the amount of stones by measuring the roughness density,and determined the threshold friction velocity for sand saltation by measuring wind speed and sand saltation *** results showed that the threshold friction velocity increased with the roughness density of *** the northern part of the study area,where neither a surface crust nor vegetation was observed,the roughness density of stones was 0.000 in a topographic depression(TD),0.050 on a northern slope(***),and 0.160 on the northern mountain(***).The mean threshold friction velocity values were 0.23,0.41,and 0.57 m/s at the TD,***,and *** sites,*** the southern part of the study area,the roughness density values of stones were 0.000 and 0.070-0.320 at the TD and southern slope sites,respectively,and the mean threshold friction velocities were 0.23 and 0.45-0.71 m/s,*** further compared the observed threshold friction velocities with simulated threshold friction velocities using Raupach's theoretical roughness correction and the measured roughness density values,and found that Raupach's roughness correction worked very well in the simulation of threshold friction velocity in the stony *** means that the results of our stone measurement can be applied to a numerical dust model.

关键词： arid region threshold friction velocity roughness density shear stress sand saltation threshold roughness correction Gobi Desert