Seunghun Jin

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Stereo correspondence is the problem of discovering the closest possible match between two images captured simultaneously from cameras in different spatial locations. The differences between the positions of the matching points are the stereo disparity (disparity) value. Stereo vision is a well-known ranging method because it resembles the basic mechanism(More)
In this paper we present an approach to modeling system-centric information in order to facilitate role engineering (RE). In particular, we first discuss the general characteristics of the information required in RE. Afterwards, we discuss two informational flow types among authorities involved in RE process, <i>forward information flow (FIF)</i> and(More)
Visual tracking using a color feature is based on pattern matching algorithms where the appearance of the target is compared with a reference model in successive images and the position of the target is estimated. The major drawback of these methods is that such operations are usually considered at the top level of image processing both due to the data's(More)
Vision-based vehicle speed measurement (VSM) is one of the most convenient methods available in intelligent transportation systems. Existing methods use an uncalibrated camera to measure vehicle speed, but they do not consider the possibility of camera vibration that leads to poor measurement results. This paper considers the issue when the camera is tilted(More)
Particle filters have attracted much attention due to their robust tracking performance in cluttered environments. Particle filters maintain multiple hypotheses simultaneously and use a probabilistic motion model to predict the position of the moving object, and this constitutes a bottleneck to the use of particle filtering in real-time systems due to the(More)
This paper presents design and implementation of a pipelined datapath for real-time face detection using cascades of boosted classifiers. We propose following methods: symmetric image downscaling, classifier sharing, and cascade merging, to achieve the desired processing speed and area efficiency. First, an image pyramid with 16 levels is generated from the(More)
This paper presents a real-time sound source localization system based on FPGA (field programmable gate array). The system employs three microphones with different locations and calculates the direction of the sound source using TDOA (time-delay of arrivals). All the functions for the sound source localization are implemented with the use of a dedicated(More)
Over the last decade there has been tremendous advance in the theory and practice of role-based access control (RBAC). One of the most significant aspects of RBAC can be viewed from its management of permissions on the basis of roles rather than individual users. Consequently, it reduces administrative costs and potential errors. The management of roles in(More)
This paper presents an FPGA-based parallel hardware architecture for real-time face detection. An image pyramid with twenty depth levels is generated using the input image. For these scaled-down images, a local binary pattern transform and feature evaluation are performed in parallel by using the proposed block RAM-based window processing architecture. By(More)