Výsledky vyhledávání - "Kwan Woo Ryu"

Akademický článek

Reversible data hiding scheme based on pixel-value differencing in dual images

Autor: Pyung-Han Kim, Kwan-Woo Ryu, Ki-Hyun Jung

Publikováno v: International Journal of Distributed Sensor Networks, Vol 16 (2020)

In this article, a new reversible data hiding scheme using pixel-value differencing in dual images is proposed. The proposed pixel-value differencing method can embed more secret data as the difference value of adjacent pixels is increased. In the pr

Externí odkaz: https://doaj.org/article/3e2e4b6bd5df47d18e4a2bc7128d39e0

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Data-Hiding Scheme Using Multidirectional Pixel-Value Differencing on Colour Images

Autor: Kwan-Woo Ryu, Ki-Hyun Jung, Eun-Jun Yoon, Pyung-Han Kim

Publikováno v: Security and Communication Networks, Vol 2019 (2019)

Data hiding is a technique that hides the existence of secret data from malicious attackers. In this paper, we propose a new data-hiding scheme using multidirectional pixel-value differencing, which can embed secret data in two directions or three di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efbbbc7c0de767192bda12a494c670e1

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Trajectory Information-based Routing Protocol for Mobile Mesh Router in Wireless Mesh Networks

Autor: Hong-Jong Jeong, Kwan-Woo Ryu, Yong-Jin Cho, Dongkyun Kim

Publikováno v: The Journal of Korea Information and Communications Society. 36:912-923

In this paper, we propose a routing protocol for WMNs to provide passengers in public transportation vehicles (e.g., bus and tram) with Internet access service. In order to support end users with a reliable Internet connection despite the mobility of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4431fa4ee0d9ccd74058189f88e324c5
https://doi.org/10.7840/kics.2011.36a.11.912

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Improved Trajectory Calculation on the Semi-Lagrangian Advection Computation

Autor: Su Wan Park, Nak Hoon Bark, Kwan Woo Ryu

Publikováno v: The KIPS Transactions:PartA. :419-426

To realistically simulate fluid, the Navier-Stokes equations are generally used. Solving these Navier-Stokes equations on the Eulerian framework, the non-linear advection terms invoke heavy computation and thus Semi-Lagrangian methods are used as an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33efd279a34b83e2a092753d44640aa1
https://doi.org/10.3745/kipsta.2009.16a.6.419

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Modeling and Rendering of Clouds for Real-time Flight Simulation

Autor: Chang Woo Lee, Joo Young Do, Kwan Woo Ryu, Nak Hoon Baek

Publikováno v: The KIPS Transactions:PartA. :307-318

Modeling and rendering of atmospheric phenomena such as clouds is one of most difficult research themes in the field of computer graphics, mainly due to its complexity, huge volume, ubiquitousness, etc. In this paper, we represent a system for real-t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c689c38140f44e2c919e0ec57e7c9c2
https://doi.org/10.3745/kipsta.2009.16a.5.307

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A Dynamics Model of Rotor Blades for Real-time Simulation of Helicopters

Autor: Eun Ju Kim, Suwan Park, Kwan-Woo Ryu, Nakhoon Baek

Publikováno v: The KIPS Transactions:PartA. :255-262

Physically-based researches on simulating helicopter motions have been achieved in the field of aeronautics, aerodynamics and others. These results, however, have not been appled in the computer graphics area, mainly due to their complex equations an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51775a12e3705170cdc5298896c476f6
https://doi.org/10.3745/kipsta.2007.14-a.5.255

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A Linear Time Algorithm for Collision Response of Articulated Rigid Bodies

Autor: Kwan-Woo Ryu, Dae-Hyun Jeong

Publikováno v: IEICE Transactions on Information and Systems. :1478-1481

We present a linear-time algorithm for treating collision response of articulated rigid bodies in physically based modeling. By utilizing the topology of articulated rigid bodies and the property of linear equations, our method can solve in linear ti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4eb9a874e26efe1715d8086de3c4518
https://doi.org/10.1093/ietisy/e90-d.9.1478

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