Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Ji-Sang Yoo"'
Publikováno v:
Journal of Electrical and Computer Engineering, Vol 2010 (2010)
We propose a watermark embedding and extracting method for blind watermarking. It uses the characteristics of a scalar quantizer to comply with the recommendation in JPEG, MPEG series, or JPEG2000. Our method performs embedding of a watermark bit by
Externí odkaz:
https://doaj.org/article/c85070b7feda4eb09b6ecb092e15b96b
Publikováno v:
Sensors, Vol 21, Iss 6358, p 6358 (2021)
Sensors
Volume 21
Issue 19
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 19
Sensors (Basel, Switzerland)
Multi-object tracking is a significant field in computer vision since it provides essential information for video surveillance and analysis. Several different deep learning-based approaches have been developed to improve the performance of multi-obje
Publikováno v:
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 3
Sensors, Vol 21, Iss 1013, p 1013 (2021)
Sensors
Volume 21
Issue 3
Sensors, Vol 21, Iss 1013, p 1013 (2021)
RGB-D cameras have been commercialized, and many applications using them have been proposed. In this paper, we propose a robust registration method of multiple RGB-D cameras. We use a human body tracking system provided by Azure Kinect SDK to estimat
Publikováno v:
Sensors (Basel, Switzerland)
Sensors, Vol 20, Iss 4566, p 4566 (2020)
Sensors
Volume 20
Issue 16
Sensors, Vol 20, Iss 4566, p 4566 (2020)
Sensors
Volume 20
Issue 16
The use of human gesturing to interact with devices such as computers or smartphones has presented several problems. This form of interaction relies on gesture interaction technology such as Leap Motion from Leap Motion, Inc, which enables humans to
Autor:
Ji-Sang Yoo, Y.J. Lee, Jihee Kim, Yadav Sunil Kumar, Junggwon Kim, Soonchul Kwon, Daehyeon Lee
Publikováno v:
Healthcare
Volume 8
Issue 2
Healthcare, Vol 8, Iss 104, p 104 (2020)
Volume 8
Issue 2
Healthcare, Vol 8, Iss 104, p 104 (2020)
Saccadic eye movementis an important ability in our daily life and is especially important in driving and sports. Traditionally, the Developmental Eye Movement (DEM) test and the King&ndash
Devick (K-D) test have been used to measure saccadic ey
Devick (K-D) test have been used to measure saccadic ey
Autor:
Ji-Sang Yoo
Publikováno v:
Transactions of the American Mathematical Society. 370:8111-8133
Given a finite-to-one factor map $\pi: (X, T) \to (Y, S)$ between topological dynamical systems, we look into the pushforward map $\pi_*: M(X, T) \to M(Y,T)$ between sets of invariant measures. We investigate the structure of the measure fiber $\pi_*
Autor:
Gyu-cheol Lee, Ji-Sang Yoo
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 42:1677-1687
Publikováno v:
Ergodic Theory and Dynamical Systems. 39:865-888
Given a factor code $\unicode[STIX]{x1D70B}$ from a shift of finite type $X$ onto a sofic shift $Y$, an ergodic measure $\unicode[STIX]{x1D708}$ on $Y$, and a function $V$ on $X$ with sufficient regularity, we prove an invariant upper bound on the nu
Publikováno v:
Journal of Electrical Engineering and Technology. 12:428-435
In this paper, we propose a novel motion field estimation algorithm for which a Udisparity map and forward-and-backward error removal are applied in a vehicular environment. Generally, a motion exists in an image obtained by a camera attached to a ve
Publikováno v:
International journal of advanced smart convergence. 5:1-9
In order to reconstruct a 3D model in video sequences, to select key frames that are easy to estimate a geometric model is essential. This paper proposes a method to easily extract informative frames from a handheld video. The method combines selecti