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Proceedings Paper

Multimetric evaluation protocol for user-assisted video object extraction systems
Author(s): Na Li; Shipeng Li; Chun Chen
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Paper Abstract

In this paper, a multi-metric evaluation protocol is proposed to evaluate performance of user-assisted video object extraction systems. Evaluation metrics are the essential element in performance evaluation methodology. Recent works on video object segmentation/extraction are mostly restricted to a single objective metric to judge the overall performance of algorithms. Motivated by a novel framework for performance evaluation on image segmentation using Pareto front, we propose a multi-metric evaluation protocol, including metrics for contour-based spatial matching, temporal consistency, user workload and time consumption. Taking the characteristic of a user-assisted video object extraction system into consideration, we formulate the metrics in a way simple but close to the assessment of human visual system. For spatial matching, we define three types of errors: sharp error, smooth error and mass error, which can precisely score an extraction result. The time consistency is introduced to evaluate the stability over time of a system. In addition, as far as a user-assisted system is concerned, the workload of users is also in our metric. Incorporating multi-metric into one 4-D fitness space, we adopt the Pareto front to find the best choice of a system with optimal parameters. The tests of our evaluation method show that the multi-metric protocol is effective.

Paper Details

Date Published: 23 June 2003
PDF: 9 pages
Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); doi: 10.1117/12.509857
Show Author Affiliations
Na Li, Zhejiang Univ. (China)
Shipeng Li, Microsoft Research Asia (China)
Chun Chen, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 5150:
Visual Communications and Image Processing 2003
Touradj Ebrahimi; Thomas Sikora, Editor(s)

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