A 3-dimensional sift descriptor and its application to action recognition

作者：Paul Scovanner, Saad Ali, Mubarak A. Shah · 年份：2007 · DOI：10.1145/1291233.1291311 · 被引用次数：1643 · 研究领域：Human Pose and Action Recognition、Video Analysis and Summarization、Advanced Image and Video Retrieval Techniques

In this paper we introduce a 3-dimensional (3D) SIFT descriptor for video or 3D imagery such as MRI data. We also show how this new descriptor is able to better represent the 3D nature of video data in the application of action recognition. This paper will show how 3D SIFT is able to outperform previously used description methods in an elegant and efficient manner. We use a bag of words approach to represent videos, and present a method to discover relationships between spatio-temporal words in order to better describe the video data.