Yiwen Luo
Software Engineer specialized in frontend development. Currently focusing innovative and efficient ways of collecting ground truth for media data.
Previously worked on Inbox By Gmail and Gmail 2018 Redesign.
Research Areas
Authored Publications
Google Publications
Other Publications
Sort By
Efficient video annotation with visual interpolation and frame selection guidance
Aakrati Talati
Keith Simmons
Vittorio Ferrari
WACV 2021, WACV 2021, pp. 14
Preview abstract
We introduce a unified framework for generic video annotation with bounding boxes. Video annotation is a long-standing problem, as it is a tedious and time-consuming process. We tackle two important challenges of video annotation: (1) automatic temporal interpolation and extrapolation of bounding boxes provided by a human annotator on a subset of all frames, and (2) automatic selection of frames
to annotate manually. Our contribution is two-fold: first, we propose a model that has both interpolating and extrapolating capabilities; second, we propose a guiding mechanism that sequentially generates suggestions for what frame to annotate next, based on the annotations made previously.
We extensively evaluate our approach on several challenging datasets in simulation and demonstrate a reduction in terms of the number of manual bounding boxes drawn by 60% over linear interpolation and by 35% over an off-the-shelf tracker. Moreover, we also show 10% annotation time improvement over a state-of-the-art method for video annotation with bounding boxes. Finally, we run human annotation experiments and provide extensive analysis of the results, showing that our approach reduces actual measured annotation time by 50% compared to commonly used linear interpolation.
View details
No Results Found
