한밭대학교소프트웨어융합대학원

Adviser

• Name : Jin-soo Kim
• E-mail : jskim67@hanbat.ac.kr
• Location of lab. : N4-508 / N5-414
• Contact number : +82-42-821-1147

Introduction to the Lab (field of research)

The VISCOM Lab was established in April 2000. The primary objective is to perform innovative research works in the areas of video signal processing, compressions, 3D video representations, multimedia systems and digital multimedia broadcasting. Members of the lab are pursuing research focused on advanced multimedia engineering technologies on a variety of image processing, multimedia systems and terminals. Current specific research topics include compressive image/video sensing(CS), distributed video coding(DVC), international standard video coding for universal multimedia sampling/access and digital media convergence.

Representative research results

Paper

• Jin-soo Kim “Recognition Performance Improvement of QR and Color Codes Posed on Curved Surfaces,” Journal of the Korea Institute of Information and Communication Engineering, Vol.23, pp.267-275, March. 2019.
• Do-young Choi and Jin-soo Kim “An Effective Detection of Print Image Forgeries Based on Modeling of Color Matrix : An Application to QR Code,” Journal of Korea Contents Society, Vol.18, No. 10, pp.431-442, Oct. 2018.
• Jung-seon Ryu and Jin-soo Kim “An Effective Fast Algorithm of BCS-SPL Decoding Mechanism for Smart Imaging Devices,” Journal of Korea Multimedia Society, Vol.19, pp.200-208, Feb. 2016.
• Jin-soo Kim et al., “Estimation of Accurate Effective Loss Rate for FEC Video Transmission,” Signal Processing: Image Communication(SCI), Vol.29, pp.678-698, July 2014.
• Jin-soo Kim et al. “Pixel-domain Wyner-Ziv Residual Video Coder with Adaptive Binary-to-Gray Code Converting Process”, IET Electronics Letters (SCI), 31st January 2013, Vol.49, No.3, pp. 189-190

Patent

• “Selective Low-Power Video Codec with Interaction Between Encoder and Decoder, and an Encoding/Decoding Method Thereof”, Korea Patent No.10-1500300, 2015.　
• “System and Method for Detecting a Circle-type Object and Approximating a Substitute Circle based on Image Processing” Korea Patent No.10-1557271, 2015.
• “Method and Appratus for Controlling Augmented Reality-based Presentation” Korea Patent No.10-1407249, 2014.

Adviser

• Name : Si-Woong Lee
• E-mail : swlee69@hanbat.ac.kr
• Location of lab. : N5-412 / N5-417
• Contact number : +82-42-821-1146

Introduction to the Lab (field of research)

We are focusing on the research on core technologies for 3D image services. In more detail, video compression (MPEG1/2/4, H.263/26L/264 etc), visual communication, stereo/multi-view based 3D image compression/decompression/view synthesis, 3D audio signal processing, etc. The technologies being developed for 3D image services may be realized by attaching depth information to an ordinary 2D image using the multi-view stereoscopic vision techniques, which makes the viewers feel realism as if they are on the spot. Today, it is not going too far to say that in all the exhibition events related to information technologies, 3D display equipments are established to give chances to enjoy realistic 3D images, which provide such outstanding visual effects distinguished from ordinary 2D images that optical illusion is caused. Regarding such a trend, we are making an effort at researching and developing the technologies for 3D image services.

Representative research results

Paper

• H.S.Kang, S.W.Lee, H.Cholamhosseini, “Probability Constrained Search Range Determination for Fast Motion Estimation,” ETRI Journal, Vol. 34, No. 1, June 2012
• Y.H.Ko, J.H.Kim, S.W.Lee, H.S.Kang, “Dual Block Truncation Coding for Overdriving of Full HD LCD Driver,” IEEE Trans. on Consumer Electronics, Vol. 58, No. 1, Feb, 2012
• M.J.Lim, C.H.Han, S.W.Lee, “Fast Shape Matching Using Statistical Features of Shape Contexts,” IEICE Trans. Inf.&Syst., Vol.E94-D, No.10, Oct. 2011
• C.H.Han, S.W.Lee, H.Gholamhosseini, “Progressive Side Information Refinement Algorithm for Wyner-Ziv Codec,” IEICE Trans. Inf.&Syst., Vol.E94-D, No.8, Aug. 2011
• Y.H.Ko, H.S.Kang, S.W.Lee, “Adaptive Search Range Motion Estimation Using Neighboring Motion Vector Differences,” IEEE Trans. on Consumer Electronics, Vol. 57, No. 2, May, 2011

Patent

• “Method for segmenting and estimating a moving object motion”, US005748761A, 1998
• “Method for segmenting and estimating a moving object motion using a hierarchy of motion model”, US005734737A, 1998
• “Method and apparatus for encoding an image signal having an object by using an extension-interpolation technique”, US005633685A, 1997

Adviser

• Name : Woo-Seop Rhee
• E-mail : wsrhee@hanbat.ac.kr
• Location of lab. : N4-506 / N4-517
• Contact number : +82-42-821-1749 / +82-10-3073-5324

Introduction to the Lab (field of research)

The main research topics of the media web service laboratory are the context aware service based on semantic sensor web technology. To provide context aware service, detecting and monitoring of certain phenomena are required. Typically, sensors are used for this purpose. But, the sensor data has heterogeneity about system, syntax, structure, and semantics. To solve these problems, new paradigms are emerged such as IoT(Internet of Things), WoT(Web of Things), WoO(Web of Objext) and SSW(Semantic Sensor Web). They provide new experience by convergence of existing service, content and data generated by sensor through semantic approach and lightweight alternative protocols with REST. Regarding such a trends, we are researching that web based wireless sensor network, device abstraction for the acquisition of raw data and ontology design, semantic annotation, semantic reasoning for context awareness and service composition, user pattern mining, user interface, and RESTful web service technology to provide user adoptive service.

Representative research results

Paper

• U.Jayasinghe, G.M.Lee, Á.MacDermott, W.S.Rhee, “TrustChain: A Privacy Preserving Blockchain with Edge Computing,” Wireless Communications and Mobile Computing (SCI-E), Jul. 2019.
• H.S.Choi, G.M.Lee, W.S.Rhee, “Hierarchical Trust Chain Framework for IoT Services,” 2016 IEEE International Conference on Ubiquitous and Future Networks (ICUFN) 2019, JUL. 2019.
• H.S.Choi, Q.Peng, Y.J.Ji, K.H.Ko, W.S.Rhee, “Development of dangerous-situation aware mechanism based on data-fusion,” Journal of Digital Contents Society, Jan. 2019, pp. 145-154.
• D.H.Kang, H.S.Choi, W.S.Rhee, “SRS: Social Correlation Group based Recommender System for Social IoT Environment,” International Journal of Contents(IJoC), Mar. 2017.
• S.M.Kim, H.S.Choi, W.S.Rhee, “Development of IoT Home Gateway Environment based on ACOME using Open Source Hardware,” Journal of the korea contents association, Mar. 2016, pp. 296-304.
• H.S.Choi, W.S.Rhee, “IoT-Based User-Driven Service Modeling Environment for a Smart Space Management System,” Sensors (SCI-E), Nov. 2014, pp.22039-22064
• Woo Seop Rhee et al, “User-centric Service Environment for Context Aware Service Mash-up,” IEEE WF-IoT 2014, Mar. 2014
• Woo Seop Rhee et al, “Standardization and Challenges of Smart Ubiquitous Networks in ITU-T,” IEEE Communications Magazine (SCI), Oct. 2013, pp.102-110.
• Woo Seop Rhee et al, “Smart Ubiquitous Networks for future telecommunication environments,” Computer Standards & Interfaces (SCI-E), August. 2013, available on-line

Advisor

• Name : Eun-Young Ahn
• E-mail : aey@hanbat.ac.kr
• Location of lab. : N4-412 / N5-512-1
• Contact number : +82-42-821-1750

Introduction to the Lab (field of research)

CGA Lab.(Computer Graphics Applications Laboratory) is established in 2006 for the fundamental researches and the development of CG applications useful in a serious game, virtual reality and animation. In detail, we have focused on the convergence techniques for visualization and simulation of the physical phenomenon and for making realistic contents using VR techniques like as stereo image rendering and image-based rendering. Advisor is a chief of Institute of Cultural Technology supported by MCST(Ministry of Culture, Sports and Tourism) developing a CAD system for traditional wooden building and establishing virtual heritage. The degradation phenomenon for cultural assets and their representation method for improving the reality in VR is a recently on-going study. Our research team is also interested in the Holography in the future realistic full 3D display.

Representative research results

Paper

• Eunyoung Ahn et al, “Effects of inlet radius and bell mouth radius on flow rate and sound quality of centrifugal blower,” Journal of Mechanical Science and Technology(SCI), Vol.25, No.5, pp.1531~1538, 2012.
• Eunyoung Ahn et al, “Numerical Analysis of Air Flows for Korean Traditional House,” Wireless Computing(SCIE), Junly, 2013.
• Eunyoung Ahn et al, “Q-learning Reward Propagation Method for Reducing the Transmission Power of Sensor Nodes in Wireless Sensor Networks,” Wireless Computing(SCIE), July, 2013.
• Suyeol Lee, Jaewon Kim EunYoung Ahn, “A visual simulation method for weathering progress of stone artifacts,” Multimedia Tools and Application Program(SCIE), ISSN1380-1750, 2016.
• Dokyung Shin, Eunyoung Ahn, “Tensor based non-photo realistic rendering for traditional architectural images,” Journal of Central South University(SCIE), Vol.21, No. 5, 2014.

Patent

• “Real-time auction and reverse-auction system using portable wireless terminals,” Korea Patent No.10-1105943, 2012.
• “Smart Billboard for the embodiment of image based virtual reality,” Korea Patent No.10-1159705, 2012.
• “Apparatus for preventing flow”, Korea Patent No.10-1159707, 2012.
• “Outdoor LED lamp loaded with ultrasonic wave for restraining harmful insects,” Korea Patent No.10-1200912, 2012.
• Estimation of Changes in Material Properties and Visualization of Granular Collapse Using Voxel Structure, Patent No.10-1613178, 2016
• A Method for object voxelization using file and parallel processing, Patent No.10-1651827, 2016
• System and method for controlling compatible receiver, Patent No.10-1711574, 2017

Adviser

• Name : Haechul Choi
• E-mail : choihc@hanbat.ac.kr
• Location of lab. : N4-516 / N4-613
• Contact number : +82-42-821-1149

Introduction to the Lab (field of research)

The visual media is in popular around our life, especially with PC's and TV's. Our research focuses on the areas of multimedia computing, communications and broadcasting towards rich and intelligent multimedia applications

• Image and Video Compression
  • H.264/AVC
  • HEVC (High Efficiency Video Coding)
  • 3D video coding
  • Multi-view video coding
  • Scalable video coding
• Pattern Recognition and Machine Learning
  • Deep learning
  • Object detection and tracking
  • Super resolution and frame rate up-conversion
• Multimedia System
  • Acceleration and parallelization using GPU and CPU on mobile devices
  • AUI(Advanced user interface) system for HMI(human machine interaction)
  • Mobile application(app)
  • NFC(near field communication) application

Representative research results

Paper

• Daehyeok Gwon and Haechul Choi, “Relative SATD-based Minimum Risk Bayesian Framework for Tast Intra Decision of HEVC,” KSII Transactions on Internet and Information Systems, Vol. 13, No.1, pp. 385~405, Jan. 2019. (SCIE)
• Yongtae Kim, Jae-gon Kim, and Haechul Choi, “FAST SPATIAL AND TEMPORAL CORRELATION-BASED REFERENCE PICTURE SELECTION,” Journal of Theoretical and Applied Information Technology Vol. 96, No. 5, pp. 1276 ~ 1284, Mar. 2018.
• Aram Baek, Kangwoon lee, Jae-Gon Kim, and Haechul Choi, “Analysis of Implementing Mobile Heterogeneous Computing for Image Sequence Processing,” KSII Transactions on Internet and Information Systems, Vol. 11, No. 10 pp.4948 ~ 4967, Oct. 2017. (SCIE)
• Heachul Choi, Eunsook Lim, Dong-Hyo Lee, and Seongmin Pyo, “Microstrip antenna using H-slotted ground structure for orthogonally polarized dual-band operation,” Microwave and Optical Technology Letters, Vol. 58 No. 1, pp. 136 ~ 139, Nov. 2015 (SCIE)
• Yangbin Lim, Si-Woong Lee, and Heachul Choi, “Alternative Intra Prediction for Screen Content Coding in HEVC,” IEICE TRANS. INF & SYST, Vol. E97-D No. 9, pp. 2537 ~ 2540, Sep. 2014. (SCIE)
• Jangbyung KANG, Jis-Soo KIM, Jea-Gon KIM, and Heachul CHOI, “Fast Transform Unit Decision for HEVC,” IEICE TRANS. INF & SYST, Vol. E97-D No. 8, pp. 2205 ~ 2208, Aug. 2014. (SCIE)
• Un-Ki Park, Haechul Choi, Jung Won Kang, and Jae-Gon Kim, “Scalable Video Coding with Large Block for UHD Video,” IEEE Transactions on Consumer Electonics, Vol. 58 No. 3, pp. 932 ~ 940, Aug. 2012. (SCI)
• Byung-Tak Lee, BongHo Lee, Haechul Choi, Jin-soo Kim, Kugjin Yun, Won-SikCheong, and Jae-Gon Kim, “Adaptive Pre-/Post-Filters for NRT-Based Stereoscopic Video Coding,” ETRI Journal, Vol. 34 No. 5, pp. 666 ~ 673, Oct. 2012. (SCI)
• Seyoon Jeong, Sung-Chang Lim, Hahyun Lee, Jongho Kim, Jin Soo Choi, and Haechul Choi, “Highly Efficient Video Codec for Entertainment-Quality,” ETRI Journal, Vol. 33 No. 2, pp. 145 ~ 154, Apr. 2011. (SCI)

Patent

• APPARATUS AND METHOD FOR IMAGE INCODING/DECODING, Patent No. 10-1348613-0000, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• ADAPTIVE IMAGE CODING APPARATUS AND METHOD, Patent No. 10-1234008-0000, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• METHOD AND APPARATUS FOR ENCODING AND DECODING USING ADAPTIVE BIT DEPTH DECREASING, Patent No. 10-1277093-0000, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• IMAGE DECODER USING UNIDIRECTIONAL PREDICTION, Patent No. 10-1356448-0000, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• APPARATUS FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DCT COEFFICIENT SCANNING BASED ON PIXEL SIMILARITY AND METHOD THEREFOR , Patent No. US 085480060, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• IMAGE ENCODER AND DECODER USING UNDIRECTINAL PREDICTION, Patent No. US 08867854, [ISO/IEC HEVC/ITU-T H.265 standard patent]
• METHOD AND APPARATUS FOR VIDEO-ENCODING/DECODING USING FILTER INFORMATION PREDICTION, Patent No. US 09363533, [ISO/IEC HEVC/ITU-T H.265 standard patent]

Adviser

• Name : Inkyu Bang
• E-mail : ikbang@hanbat.ac.kr
• Location of lab. : N4-408 / N4-514
• Contact number : +82-42-821-1209

Introduction to the Lab (field of research)

The Wireless Communication and System Security (WCSS) laboratory studies physical-layer and MAC-layer techniques in 5G mobile communication and the Internet of Things (IoT). In addition, we are focusing on wireless network security issues in practical systems such as Wi-Fi and LTE/5G.a

• Wireless communication
  • physical-layer security
  • random access
  • resource allocation
  • machine learning applications at PHY/MAC layers in the IoT and 5G scenarios
• System security
  • vulnerability analysis in practical LTE/5G and Wi-Fi systems and applications of system security using wireless channel characteristics

Representative research results

Paper

• Inkyu Bang and Bang Chul Jung*, “Secrecy Rate Analysis of Opportunistic User Scheduling in Uplink Networks with Potential Eavesdroppers,” IEEE Access, Vol. 7, No.1, pp. 127078-127089, September. 2019.
• Taehoon Kim and Inkyu Bang*, “An Enhanced Random Access with Preamble-Assisted Short-Packet Transmissions for Cellular IoT Communications,” IEEE Communications Letters, vol. 23, no. 6, pp. 1081 - 1084, June 2019.
• Nitya Lakshmanan, Inkyu Bang, Min Suk Kang, Jun Han, and Jong Taek Lee, “SurFi: Detecting Surveillance Camera Looping Attacks with Wi-Fi Channel State Information,” ACM WiSec'19, Miami, USA, May 15-17, 2019.
• Inkyu Bang, Su Min Kim*, and Dan Keun Sung*, “Artificial Noise-Aided User Scheduling from the Perspective of Secrecy Outage Probability,” IEEE Transactions on Vehicular Technology, vol. 67, no.8, pp. 7816 - 7820, August 2018.
• Inkyu Bang, Su Min Kim*, and Dan Keun Sung*, “Adaptive Multiuser Scheduling for Simultaneous Wireless Information and Power Transfer in Multicell Environment,” IEEE Transactions on Wireless Communications, vol. 16, no. 11, pp. 7460 - 7474, November 2017.

Patent

• “Method and device for selectively performing operation on basis of terminal operation mode,” US patent 10,237,827B2, 2019.