Title

Real Time Video Stitching by Exploring Temporal and Spatial Features

Document Type

Conference Proceeding

Publication Date

7-13-2017

Publication Title

MOBIMEDIA 2017: Proceedings of the 10th EAI International Conference on Mobile Multimedia Communications

DOI

10.4108/eai.13-7-2017.2270086

Abstract

Although image stitching has been investigated for years, realtime video stitching still lacks of e cient methods to meet the required frame rate for satisfactory human vision experience. This work pro- poses e cient video stitching solutions by exploiting both temporal and spatial features among video frames. As a result, the stitching speed is signi cantly improved with two techniques by exploiting: (1) the dimmension of distance (spatial) by focusing only on the region of frame overlap and (2) the dimmension of time (tempo- ral) by reusing homography information across multiple frames. Based on these two techniques, this paper presents three solutions to determine submiages for rapid stitching the video frames from side-by-side cameras. This work implements these solutions into a video stitcher. The evaluation over video streams shows that the proposed solutions can stitch the video at 6.5 frames per second (fps) in contrast to 1.5 fps in conventional imaging stitching approaches, which is over 400% improvement on stitching speed performance, but at the cost of a marginal drop in accuracy.

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