Seung-Wan Han

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We propose the minimumWiener index spanning tree (MWST) as a routing topology that is suitable for sensor networks with multiple mobile base nodes. However, it was proved that finding a spanning tree with the minimum Wiener index from a weighted graph is NP-hard. To address this problem and analyze the effectiveness of the MWST as the routing tree on sensor(More)
1 Department of Media, Soongsil University, 369, Sangdo-Ro, Dongjak-Gu, Seoul 156-743, Republic of Korea 2Department of Digital Media, Anyang University, 708-113, Anyang 5-Dong, Manan-Gu, Anyang 430-714, Republic of Korea 3 Video Surveillance Research Section, ETRI, 218, Gajeong-Ro, Yuseong-gu, Daejeon 305-700, Republic of Korea 4 School of Computing,(More)
In this paper, a novel method to automatically classify an pornographic video using fast motion features is proposed. In proposed method, predefined number of clips without a shot change are extracted from an input video and new, fast motion features are computed for each clip. Each clip is given a pornographic possibility based on motion distribution(More)
In this paper, a novel method to generate depth map automatically from aerial video is proposed. Camera intrinsic and extrinsic parameters are estimated by a traditional Structure from Motion (SfM) approach and a post-processing for the camera path optimized for aerial video is used. Depth map is generated directly from the camera path and 3D point without(More)
In this paper, a novel method to automatically detect mosaic masking regions in an input image is proposed. Mosaic masking region can be used as an important clue for recognizing commercial pornographic images. The proposed method is composed of three steps. The first step is to extract SRE features using a new cross-shaped feature characteristic, and the(More)
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