关于活动识别的深度和无监督特征学习的教程A tutorial on deep and unsupervised feature learning for activity recognition |
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课程网址: | http://videolectures.net/gesturerecognition2011_taylor_tutorial/ |
主讲教师: | Graham Taylor |
开课单位: | 圭尔夫大学 |
开课时间: | 2011-08-24 |
课程语种: | 英语 |
中文简介: | 从视频数据中识别人类活动是一个具有挑战性的问题,近年来越来越受到计算机视觉界的关注。目前,在此任务中表现最佳的方法基于具有显式局部几何线索和其他启发式的工程描述符。直到最近,在分类阶段之前,学习并未发挥重要作用,此时大部分输入都会丢失。已经表明,在监督,无监督或半监督设置中的学习特征可以改善其他视觉任务的性能,但是这些工作中的大多数集中在静态图像而不是视频上。在本教程中,我们将回顾一些最近提出的方法,这些方法试图学习用于活动识别的低级和中级功能。这包括深度和无监督的特征学习方法,例如卷积网络,卷积深度置信网络和其他学习稀疏,过完备表示的方法。 |
课程简介: | Recognition of human activity from video data is a challenging problem that has received an increasing amount of attention from the computer vision community in recent years. Currently the best performing methods at this task are based on engineered descriptors with explicit local geometric cues and other heuristics. Until very recently, learning has not played a major role until the classification stage, at which point much of the input is lost. It has been shown that learning features in a supervised, unsupervised, or semi-supervised setting can improve performance in other vision tasks, but most of these works have concentrated on static images rather than video. In this tutorial, we will review a number of recently proposed methods that attempt to learn low and mid-level features for use in activity recognition. This includes deep and unsupervised feature learning methods such as convolutional networks, convolutional deep belief networks and other approaches which learn sparse, overcomplete representations. |
关 键 词: | 视频数据; 工程描述符; 学习特征 |
课程来源: | 视频讲座网 |
最后编审: | 2020-06-15:wuyq |
阅读次数: | 99 |