Changseok Bae

ORCID: 0000-0003-4169-4734
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About
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Research Areas
  • Context-Aware Activity Recognition Systems
  • Video Coding and Compression Technologies
  • Advanced Steganography and Watermarking Techniques
  • Advanced Data Compression Techniques
  • Multimedia Communication and Technology
  • Mobile Health and mHealth Applications
  • Indoor and Outdoor Localization Technologies
  • Image and Video Quality Assessment
  • Video Surveillance and Tracking Methods
  • Non-Invasive Vital Sign Monitoring
  • Advanced Vision and Imaging
  • Personal Information Management and User Behavior
  • Advanced Image and Video Retrieval Techniques
  • Bluetooth and Wireless Communication Technologies
  • Metaheuristic Optimization Algorithms Research
  • Opportunistic and Delay-Tolerant Networks
  • IoT and Edge/Fog Computing
  • IoT-based Smart Home Systems
  • EEG and Brain-Computer Interfaces
  • Gaze Tracking and Assistive Technology
  • Digital Media Forensic Detection
  • Wireless Body Area Networks
  • Video Analysis and Summarization
  • Advanced Combustion Engine Technologies
  • Digital Rights Management and Security

Daejeon University
2015-2023

Electronics and Telecommunications Research Institute
2007-2016

Korea Advanced Institute of Science and Technology
2002-2014

The University of Sydney
2005-2008

Korea Institute of Science and Technology
2002

For the upcoming ubiquitous computing environments in u-health areas involve measurement of physiological signals daily life. However, those signals, such as photoplethysmorgraphy (PPG), and electrocardiogram (ECG), requires being still tight during order to get accurate result preventing noises caused by casual movement. In this paper, we propose a method obtain situation where little movement is allowed. By measuring PPG motion at forehead motion, calibrate distorted signal with signals....

10.1109/iembs.2007.4352852 article EN Conference proceedings 2007-08-01

Owing to the large number of video programs available, a method for accessing preferred videos efficiently through personalized summaries and clips is needed. The automatic recognition user states when viewing essential extracting meaningful segments. Although there have been many studies on emotion using various responses, electroencephalogram (EEG)‐based research preference at its very early stages. This paper proposes classification models based linear nonlinear classifiers EEG features...

10.4218/etrij.13.0113.0194 article EN ETRI Journal 2013-12-01

This paper proposes a new scheme of the home server platform for providing digital services by connecting networks and Internet. The proposed is an integrated form multimedia server, control information server. system has interface between access networks, various kinds wired wireless devices, processing modules. As examples services, provides TV service, remote instant message service based on open gateway initiative (OSGi) framework. We have implemented scheme, verify that can be core...

10.1109/tce.2003.1261207 article EN IEEE Transactions on Consumer Electronics 2003-11-01

Object tracking for video and camera image capturing becomes more popular in recent scientific application domain. Many Scientists Image Processing try to find an efficient accurate way track the objects' moving real time applications. Particle Swarm Optimization is one of most potential approaches developed provide linear non-linear object by identifying special patterns selected object, achieving algorithm calculate random moving. Compare classic Kalman Filter, or other improved PSO, this...

10.1109/cec.2015.7257228 article EN 2022 IEEE Congress on Evolutionary Computation (CEC) 2015-05-01

A life-log means a recording the interesting events or daily life of an individual as digital method. The types information for log are follows: photograph, voice, activity, physiological signals, time information, and location user. In this paper, design wearable gadgets service based on UTC is presented. We designed two kinds gadgets. firstly gadget low rate data (e.g., location), second high video). acquire (universal coordinated) by using GPS from satellite. acquired (UTC) included in...

10.1109/tce.2007.4429240 article EN IEEE Transactions on Consumer Electronics 2007-11-01

Recent outstanding progresses in artificial intelligence researches enable many tries to implement self-driving cars. However, real world, there are a lot of risks and cost problems acquire training data for algorithms. This paper proposes an algorithm collect from driving game, which has quite similar environment the world. In collection scheme, proposed gathers both game screen image control key value. We employ collected virtual learn deep neural network. Experimental result applying...

10.1109/icaiic.2019.8669037 article EN 2019-02-01

In video communication based consumer device applications, the compressed is extremely fragile to transmission errors due channel noise. Error concealment (EC) an efficient way recover a damaged sequence. The existing EC algorithms for typically apply uniform mode entire sequence regardless of frame features, or lack in sensible mode-switching considerations. This paper proposes new dynamic multi-mode switching (DMS) algorithm. proposed algorithm provides several modes intra- and inter-...

10.1109/tce.2008.4470038 article EN IEEE Transactions on Consumer Electronics 2008-02-01

It has been more important to measure daily physical activity for several purposes. There have a number of methods measuring activity, such as self-reporting, attaching wearable sensors, etc. Since smartphone become widespread rapidly, can be easily measured by accelerometers in the smartphone. Although there were studies recognition exploiting acceleration data, was little discussion with influence each axis recognition. In this paper, we investigate how data is affected on performance...

10.1109/ijcnn.2015.7280494 article EN 2022 International Joint Conference on Neural Networks (IJCNN) 2015-07-01

Objectives To provide accurate personalized medical care, it is necessary to gather individual-related data or contextual information regarding the target person. Nowadays a large number of people possess smartphones, which enables sensors in smartphones be used for lifelogging. The objective study analyze human activity pattern by using lifelog agent cooperating with Health Avatar platform. Methods Using measured accelerometer and gyroscope smartphone at 50 Hz rate, reveals how long user...

10.4258/hir.2014.20.1.69 article EN cc-by-nc Healthcare Informatics Research 2014-01-01

The wearable healthcare system should be not only small and easy for users to wear them but accurate in measuring physiological signals daily life without any inconvenience. To meet these requirements, we propose the U-healthcare System which consists of a Smart Headband Health-state Monitor program. It can monitor health-state walking running. measures photo-plethysmography (PPG) signal at forehead monitoring heart rate acceleration signals. program is developed show health-state. operated...

10.1109/iembs.2008.4649467 article EN 2008-08-01

To utilize the augmented reality with portable environment, human-computer interaction interface that satisfies mobility, convenience, as well accuracy is required. In this paper, we propose a vision-based virtual touch screen ensures requirements. The implemented on stereo cameras installed see-through head mounted display device using an adaptive gesture recognition algorithm. Since it provides natural way to interact computers through select, click, and drag&drop operations, can be...

10.1109/icce.2008.4587900 article EN 2008-01-01

This paper presents a novel error concealment algorithm for H.264/AVC based on regression model, which is constructed according to the spatial relationship between block locations and their motion activities. With proposed algorithm, corrupted macroblock partitioned into subblocks vector of each sub-block predicted through model with help neighbor vectors. The experimental results show that can achieve significant Peak Signal Noise Ratio (PSNR) improvement over existing methods even reduced...

10.1109/tce.2010.5681158 article EN IEEE Transactions on Consumer Electronics 2010-11-01

In this paper, a framework for the mutual interaction of smart devices used in home service is proposed by utilizing concept device sociality to minimize human interventions. The makes easy collaboration possible providing social relations among when they encounter each other. To measure effect reduction intervention during process configuring interactions such devices, zero configuration index processes was adopted. show its feasibility terms minimizing intervention, method compared with...

10.1109/tce.2016.7448567 article EN IEEE Transactions on Consumer Electronics 2016-02-01

We propose a vision-based method that robustly extracts hands from backgrounds irrespective of illumination conditions. Many hand tracking systems build skin color model before the system runs and then they track by using model. However, is unstable because pre-defined colors cannot be adapted to various illuminations human colors. To circumvent problem, we postpone modeling task until runs. The can verify whether an object or not, verified used for color. effective not only accurate...

10.1109/isce.2009.5156946 article EN 2009-01-01
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