Browsing by Author "Liu, Tse-Han"

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Design and Implementation of a Skype Protocol Analyzer
(2013)
Cheng, Ray-Guang
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Tsai, Po-Yao
;
Lin, Ping-Chen
;
Lian, Chia-Liang
;
Liu, Tse-Han
Proprietary protocols on the Internet often pose challenges for users and analysts to determine how secure the applications are or how easy private information can be accessed. This work presents a tool that processes packets generated by Skype and analyzes its proprietary implementation. The goal of the exercise is to determine how one may reverse engineer a proprietary protocol and obtain private information. The results demonstrate that a buddy-list of a target user can be obtained through the developed Skype Protocol Analyzer.
Grey Neural Network-Based Forecasting System for Vision-Guided Robot Trajectory Tracking
(2011)
Yang, Shih-Hung
;
Chou, Chung-Hsien
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Chung, Chen-Fang
;
Pai, Wen-Pang
;
Liu, Tse-Han
This paper presents a grey neural network-based forecasting system (GNNFS) in solving the prediction problem. GNNFS adopts a grey model to predict the signal and a neural network (NN) to forecast the prediction error of the grey model. A sequential batch learning (SBL) is developed to adjust the weights of the NN. The proposed GNNFS is applied to a binocular robot, called an Eye-Robot, for human-robot interaction which involved predicting the trajectory of a participant's hand and tracking the hand. By applying the SBL, the GNNFS can gradually learn to predict the trajectory of the hand and track it well. The experimental results show that the GNNFS can carry out the SBL in real-time for vision-guided robot trajectory tracking.