An Interactive and Personalized Erasure Animation System for a Large Group of Participants
Round 1
Reviewer 1 Report
This paper presents a system for creating erasure animation from users' shaking action. The system is composed of two modules: data preprocessing module and interactive erasure animation module. It is capable of handling multiple users simultaneously in realtime, and produce erasure animation with different erased shapes.
Here are my comments:
1. The authors may need to provide a clear definition of erasure animation. Based on the paper, the algorithm mainly handles erasure and masking. But I don't see animation here. There is no time series. Nothing specific dependent on time. From the accompanying video, the erasure is more of visualization than a continuous animation.
2. I see some of the user data are being used for final visualization, but it is very limited, only scale, rotation, and translation (global transformation). The erasure shapes are all preprocessed and static, not really from the user shape. Thus it is not really personalized as the authors claimed. From the video results, only 3~4 erasure shape patterns are shown. If the authors can make the erasure shape consistent with the user strokes, it would be a great improvement.
3. I think this research is a very interesting topic. Though it is not solving a practical problem, it has its entertainment purpose, increases users' engagements and could extend to a lot of fun AR applications. Thus it would be great to emphasize the motivation of this work, its difficulty, and show in the result section fun effects being built upon this system.
4. The video format is not convenient for MacOS readers. It would be great if the authors can convert it to a format easily accessible to all readers.
In general, this is a meaningful work, with reasonable method. The authors can make the content more significant.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Thank you for giving me the possibility to review the manuscript entitled “An Interactive and Personalized Erasure Animation System for a Large Group of Participants “.
The paper deals with an innovation for large displays. The “Introduction” and the “Related Work” sections are written clearly and contain the relevant literature review. It is also good that all popular mobile terminals, such as iPhone mobile phones, android based mobile phones, tablet computers, can be directly used in the authors’ system. In spite of the fact that the development and implementation are also written well, I have some remarks. The authors mentioned the sensor-based and vision-based method for the hand gesture recognition. It is not clear why they did not mention the method in the related work which they finally used for the solution. They have written the following (see page 7, lines 219-220): “The vision-based method [23] cannot be used because there are serious occlusions among participants. Here we introduce a database server to bridge the mobile terminals and the shared display terminal.” If their solution is brand new and innovative, they have to mention it.
Regarding the references, please write the URL of the mentioned games and game engines.
Finally, a native English language correction is necessary.
To sum it up, the paper is very valuable and after the authors would correct the above mentioned “small mistakes”, I would suggest this paper for publication.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
