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利用双级随机森林分类器的行人快速检测方法 被引量:2
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作者 山笑珂 张炳林 《光学技术》 CAS CSCD 北大核心 2020年第6期741-749,共9页
近年来,深度学习算法发展迅速,并广泛应用于目标检测的任务。然而,在内存和计算能力等条件受限制的设备上,无法进行实时性的目标检测。针对这一问题,提出了一种在内存和处理单元受限的监视系统中检测行人的快速方法。针对一般行人检测... 近年来,深度学习算法发展迅速,并广泛应用于目标检测的任务。然而,在内存和计算能力等条件受限制的设备上,无法进行实时性的目标检测。针对这一问题,提出了一种在内存和处理单元受限的监视系统中检测行人的快速方法。针对一般行人检测中提取高维度行人特征导致检测效率低的问题,将改进的方向梯度直方图(HOG)和Sobel边缘图像局部二元模式算法(Sobel-LBP)进行融合作为特征,提出基于教师-学生框架的模型压缩技术,将其应用于随机森林(RF)分类器,不使用深度网络,因为经过压缩的深度网络仍然需要大量的内存用于处理参数乘法运算。通过使用教师随机森林(T-RF)输出的soft target来训练学生浅层随机森林(S-RF),也称再生随机森林(BARF),让其模仿T-RF的表现;通过BARF分类器进行行人检测,最后使用滑动窗口法检测出行人。实验证明,与T-RF相比,提出方法的速度提高了2.05倍,压缩率提高了5.39倍,并且其检测性能也较为理想。 展开更多
关键词 信息光学 行人检测 视频监视 师生框架 模型压缩 双级随机森林
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A study on the practical teaching mode of Chinese teaching in the framework of the national examination of teacher qualification certificate
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作者 Wang Yanbo 《International Journal of Technology Management》 2017年第1期19-20,共2页
the “Chinese curriculum standard” “advocated autonomy, cooperation and explore ways of learning”, “students can inquiry learning initiative, learning in practice, the use of Chinese society”, “the use of librar... the “Chinese curriculum standard” “advocated autonomy, cooperation and explore ways of learning”, “students can inquiry learning initiative, learning in practice, the use of Chinese society”, “the use of library network and other accommodation channels attempt inquiry reading”, “gradually cultivate the ability of the students” reading. Creative reading, and put forward the mechanism and the way of teaching, subject participation, which guide students sentiment in the inquiry, the creation in the inquiry, to improve Chinese accomplishment in the inquiry. The concept of modern education thought, teaching is not only a process of teaching and give to teachers, more important is to guide students to obtain knowledge and methods in the process of knowledge acquisition and learning ability of self inquiry. Inquiry teaching method for cultivating students’ thinking ability, the thinking activity of middle school students is a free, open, active, students should be given more opportunities, enough to think of and take the initiative to explore, in the exploration process, students need cooperation, interpretation and various concerted attempt to students learn to communicate with others through personal inquiry knowledge is to build up the students on their own initiative, students understand knowledge. 展开更多
关键词 national examination practice teaching mode research
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