Browsing by Author "Sun, Shih-Wei"

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A Cloud-based Intelligent Skin and Scalp Analysis System
(2018-01-01)
Huang, Wen-Shiung
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Hong, Bing-Kai
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Cheng, Wen-Huang
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Sun, Shih-Wei
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Hua, Kai-Lung
The love of beauty is an essential part of all healthy human nature. Not only do women pay great attention to facial care, but in recent years, men's consumption in this area has also grown year by year. In facial care, in addition to sunscreen, skin care, tattoos and other chemical-based skin care products, mechanical skin washing machine has also become one of the most popular beauty appliances in recent years. In order to learn the effectiveness of various face care products and tools, in this paper, we have proposed an intelligent system that integrates face washing, wireless cameras, smart phones, and cloud image analysis functionality to allow users to obtain product recommendations. The proposed system is easy to carry and provides seven analysis functionalities, such as skin color, pigmentation, skin texture, wrinkles, pores, texture analysis, and would produce an in-depth analysis report. The proposed system is not only helpful for personal beauty care, but also beneficial for professional medical clinics and makeup companies. The collected big data will also be utilized as a reference for future cosmetics, and potential medical and biotechnology company product development and marketing.
Moving foreground object detection via robust SIFT trajectories
(2013-04-01)
Sun, Shih-Wei
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Wang, Yu-Chiang Frank
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Huang, Fay
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Liao, Hong-Yuan Mark
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資訊科學與工程研究所
In this paper, we present an automatic foreground object detection method for videos captured by freely moving cameras. While we focus on extracting a single foreground object of interest throughout a video sequence, our approach does not require any training data nor the interaction by the users. Based on the SIFT correspondence across video frames, we construct robust SIFT trajectories in terms of the calculated foreground feature point probability. Our foreground feature point probability is able to determine candidate foreground feature points in each frame, without the need of user interaction such as parameter or threshold tuning. Furthermore, we propose a probabilistic consensus foreground object template (CFOT), which is directly applied to the input video for moving object detection via template matching. Our CFOT can be used to detect the foreground object in videos captured by a fast moving camera, even if the contrast between the foreground and background regions is low. Moreover, our proposed method can be generalized to foreground object detection in dynamic backgrounds, and is robust to viewpoint changes across video frames. The contribution of this paper is trifold: (1) we provide a robust decision process to detect the foreground object of interest in videos with contrast and viewpoint variations; (2) our proposed method builds longer SIFT trajectories, and this is shown to be robust and effective for object detection tasks; and (3) the construction of our CFOT is not sensitive to the initial estimation of the foreground region of interest, while its use can achieve excellent foreground object detection results on real-world video data. (c) 2012 Elsevier Inc. All rights reserved.