HON4D: Histogram of Oriented 4D Normals for Activity Recognition from Depth Sequences

• Published in: 2013 IEEE Conference on Computer Vision and Pattern Recognition pp. 716 - 723
• Main Authors: Oreifej, Omar, Zicheng Liu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2013
• Subjects: 4D Normals; Action Recognition; Activity Recognition; Depth; Histogram of Gradients; Histogram of Normals; Histograms; HOG; HON; Joints; Kinect; MSR Action 3D; MSR Action Pairs; MSR Daily Activity; Polychoron; Quantization (signal); Shape; Support vector machines; Three-dimensional displays; Vectors

We present a new descriptor for activity recognition from videos acquired by a depth sensor. Previous descriptors mostly compute shape and motion features independently, thus, they often fail to capture the complex joint shape-motion cues at pixel-level. In contrast, we describe the depth sequence u...