Authors:
Arun Balajee Vasudevan
1
;
Srikanth Muralidharan
1
;
Shiva Pratheek Chintapalli
1
and
Shanmuganathan Raman
2
Affiliations:
1
Indian Institute of Technology Jodhpur, India
;
2
Indian Institute of Technology Gandhinagar, India
Keyword(s):
Image and Video Analysis, Scene Understanding, Segmentation and Grouping.
Related
Ontology
Subjects/Areas/Topics:
Computer Vision, Visualization and Computer Graphics
;
Features Extraction
;
Image and Video Analysis
;
Motion, Tracking and Stereo Vision
;
Optical Flow and Motion Analyses
;
Segmentation and Grouping
Abstract:
Given a video, there are many algorithms to separate static and dynamic objects present in the scene. The proposed work is focused on classifying the dynamic objects further as having either repetitive or non-repetitive motion. In this work, we propose a novel approach to achieve this challenging task by processing the optical flow fields corresponding to the video frames of a dynamic natural scene. We design an unsupervised learning algorithm which uses functions of the flow vectors to design the feature vector. The proposed algorithm is shown to be effective in classifying a scene into static, repetitive, and non-repetitive regions. The proposed approach finds significance in various vision and computational photography tasks such as video editing, video synopsis, and motion magnification.