Mincheol Whang

Mincheol Whang
Sangmyung University · Human Centered Artificial Intelligence

PhD

About

147
Publications
19,489
Reads
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1,090
Citations
Additional affiliations
March 1998 - September 2019
Sangmyung University
Position
  • Professor (Full)
August 1994 - February 1998
Korea Research Institute of Standards and Science
Position
  • Senior Researcher
Education
February 1990 - July 1994
Georgia Institute of Technology
Field of study
  • Biomedical Engineering

Publications

Publications (147)
Article
Full-text available
The success of digital content depends largely on whether viewers empathize with stories and narratives. Researchers have investigated the elements that may elicit empathy from viewers. Empathic response involves affective and cognitive processes and is expressed through multiple verbal and nonverbal modalities. Specifically, eye movements communic...
Article
Full-text available
For a service robot to serve travelers at an airport or for a social robot to live with a human partner at home, it is vital for robots to possess the ability to empathize with human partners and express congruent emotions accordingly. We conducted a systematic review of the literature regarding empathy in interpersonal, virtual agents, and social...
Article
Full-text available
Watching videos is becoming a common trend in modern times. Advertising designers have concerned that physical attributes in the video affect the viewer’s empathy and determine their purchase decisions. Therefore, the purpose of this study is to provide an advertisement guideline, that increasing viewer’s empathy by controlling the physical element...
Article
Purpose The purpose of this paper is to discuss the relationship between bra's visual impression and bra parts, and then to explore the application of visual impression in bra design. Design/methodology/approach Firstly, 82 female undergraduates are asked to answered this questionnaire online, which is about the importance of parts in bra design....
Article
Full-text available
Artificial entities, such as virtual agents, have become more pervasive. Their long-term presence among humans requires the virtual agent's ability to express appropriate emotions to elicit the necessary empathy from the users. Affective empathy involves behavioral mimicry, a synchronized co-movement between dyadic pairs. However, the characteristi...
Article
Full-text available
Based on sensory conflict theory, motion sickness is strongly related to the information processing capacity or resources of the brain to cope with the multi-sensory stimuli experienced by watching virtual reality (VR) content. The purpose of this research was to develop a method of measuring motion sickness using the heart-evoked potential (HEP) p...
Article
Full-text available
Tracking consumer empathy is one of the biggest challenges for advertisers. Although numerous studies have shown that consumers' empathy affects purchasing, there are few quantitative and unobtrusive methods for assessing whether the viewer is sharing congruent emotions with the advertisement. This study suggested a non-contact method for measuring...
Article
Full-text available
Watching videos online has become part of a relaxed lifestyle. The music in videos has a sensitive influence on human emotions, perception, and imaginations, which can make people feel relaxed or sad, and so on. Therefore, it is particularly important for people who make advertising videos to understand the relationship between the physical element...
Article
Full-text available
Remote sensing of vital signs has been developed to improve the measurement environment by using a camera without a skin-contact sensor. The camera-based method is based on two concepts, namely color and motion. The color-based method, remote photoplethysmography (RPPG), measures the color variation of the face generated by reflectance of blood, wh...
Article
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With the prevalence of virtual avatars and the recent emergence of metaverse technology, there has been an increase in users who express their identity through an avatar. The research community focused on improving the realistic expressions and non-verbal communication channels of virtual characters to create a more customized experience. However,...
Article
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People tend to display fake expressions to conceal their true feelings. False expressions are observable by facial micromovements that occur for less than a second. Systems designed to recognize facial expressions (e.g., social robots, recognition systems for the blind, monitoring systems for drivers) may better understand the user’s intent by iden...
Article
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Collection of web behavior relies on self-report and web logs in daily life. The self-report is derived on memory and can seem ambiguous for analyzing web behavior. It is necessary to quantitatively measure these web behaviors to see the changes over time. Individuals tied by the same emotion become a group, and its members synchronize with each ot...
Article
Full-text available
Empathy can bring different benefits depending on what kind of emotions people empathize with. For example, empathy with negative emotions can raise donations to charity while empathy with positive emotions can increase participation during remote education. However, few studies have focused on the physiological differences depending on what kind o...
Article
Full-text available
The increasing interest in the effects of emotion on cognitive, social, and neural processes creates a constant need for efficient and reliable techniques for emotion elicitation. Emotions are important in many areas, especially in advertising design and video production. The impact of emotions on the audience plays an important role. This paper an...
Article
Full-text available
Embodied emotion is associated with interaction among a person’s physiological responses, behavioral patterns, and environmental factors. However, most methods for determining embodied emotion has been considered on only fragmentary independent variables and not their inter-connectivity. This study suggests a method for determining the embodied emo...
Article
Full-text available
Heart rate has been measured comfortably using a camera without the skin-contact by the development of vision-based measurement. Despite the potential of the vision-based measurement, it has still presented limited ability due to the noise of illumination variance and motion artifacts. Remote ballistocardiography (BCG) was used to estimate heart ra...
Article
This study was carried out to evaluate a method used to measure three-dimensional (3D) cognitive fatigue based on the pupillary response. This technique was designed to overcome measurement burdens by using non-contact methods. The pupillary response is related to cognitive function by a neural pathway and may be an indicator of 3D cognitive fatigu...
Article
Empathy has been observed to be pivotal in enhancing both social relations and the efficiency of task performance. Empathetic interaction has been shown to begin with individuals mirroring each other's facial expressions, vocal tone, actions, and so on. The internal responses of the cardiovascular activity of people engaged in empathetic interactio...
Article
The aim of this study is to predict the sensitivity of motion sickness (MS) using pattern of cardinal gaze position (CGP) before experiencing the virtual reality (VR) content. Twenty volunteers of both genders (8 females, mean age 28.42 ± 3.17) participated in this experiment. They was required to measure the pattern of CGP for 5 minute, and then w...
Article
Full-text available
Pupillary responses are associated with affective processing, cognitive function, perception, memory, attention, and other brain activities involving neural pathways. The present study aimed to develop a noncontact system to measure brain activity based on pupillary rhythms using an infra-red web camera. Electroencephalogram (EEG) signals and pupil...
Article
Full-text available
Feature of event-related potential (ERP) has not been completely understood and illiteracy problem remains unsolved. To this end, P300 peak has been used as the feature of ERP in most brain–computer interface applications, but subjects who do not show such peak are common. Recent development of convolutional neural network provides a way to analyze...
Article
Full-text available
Cardiac activity has been monitored continuously in daily life by virtue of advanced medical instruments with microelectromechanical system (MEMS) technology. Seismocardiography (SCG) has been considered to be free from the burden of measurement for cardiac activity, but it has been limited in its application in daily life. The most important issue...
Article
The purpose of this study was to measure emotional contagion, determine its direction, and compare the intensity between positive and negative contagion using the synchronization of heart rhythm pattern (HRP). A total of 64 undergraduate students (32 women and 32 men) participated in the experiment, and were randomly categorized as either leaders o...
Article
Full-text available
Continuous cardiac monitoring has been developed to evaluate cardiac activity outside of clinical environments due to the advancement of novel instruments. Seismocardiography (SCG) is one of the vital components that could develop such a monitoring system. Although SCG has been presented with a lower accuracy, this novel cardiac indicator has been...
Chapter
Web content is consumed at anytime and anywhere through mobile devices. Consumption behavior has been affected by its own emotional content. Web content has been categorized by article’s topic and its emotion has been determined by article’s nuance. This study is to determine category and emotion of web content. The Automatic Content Categorization...
Chapter
Multimodalities have attracted much interest in designing effective multimedia contents and services by applying sensory information. However, sensory experience from different modalities have been less understood in the multimedia contents design. Therefore, the optimal sensory experience is required to be considered to give impact on multimedia c...
Chapter
The relationships among body, brain, and environment have been important to recognize emotions according to the embodied emotion theory. Its relationships should be analyzed in real time because the relationships have been changed every moment. Therefore, this study has developed a system that automatically analyzes the complicated interactions bas...
Chapter
Emotion in daily life is difficult to recognize due to disadvantageous of continuous measurement. This study was to develop the method for recognizing daily emotion from a measurement of daily cardiovascular response by using the developed wireless sensor. Seven subjects assessed subjective emotions based on Russell’s emotional circumplex model eve...
Chapter
Emotions have been recognized from physiological and behavioral responses, however, in daily life these methods are less practical due to the measurement burden. This study was to minimize the measurement burden by using smartphones and to determine the behavioral patterns relevant to daily emotions through the global positioning system (GPS) locat...
Chapter
The purpose of this study was to determine the cardiovascular and behavioral patterns to develop a new algorithm of emotion recognition system through only behavioral patterns. However, to achieve this we must compare the features with both cardiovascular responses and subjective evaluations. Seven students were asked to wear PPG sensors and carry...
Chapter
Social emotion is interactive emotion in human relation. SNS (Social Network Service) has been active domain in expressing emotion developing social emotional connection. However, social emotion has less been determined to be related to emotion expression. Therefore, this study is to determine the dimensional representatives of social emotion by an...
Article
Previous psychophysiological assessments of mental workload have relied on the addition of visual or auditory stimuli. This study investigated the tactile ERP and EEG spectral power correlates of mental workload by relating limited-capacity involuntary attention allocation to changes in late positive potential (LPP) amplitude, alpha, and theta powe...
Article
Full-text available
With the advent of Social Network Service, human life has been actively recorded for keeping memory. Recording and sharing daily life has been used to achieve the fundamental desire for socialization. The empathic behavior was necessary of a social interaction showing co-movement. Therefore, the goal of this study was to recognize the social behavi...
Article
This study aims to develop a non-contact measurement technique for cardiac response that uses an infrared image of the patient's pupil. The pupil contraction rhythm is related to the autonomic balance and major organs (such as the heart) via a neural pathway. In this study, the response of the heart was determined by analyzing the pupillary rhythm...
Conference Paper
In this paper, a method of quantitatively extracting human emotions by analyzing the surrounding environment images obtained through smartphone cameras in real time is proposed. In the area psychology, it has been known that visual elements such as colors and complexity affect human emotions. Based on the foregoing, we developed an application for...
Article
Facial expression is important factor on social interaction. Facial muscle movement provides emotion information to develop social network. However, facial movement has less determined to recognize social emotion. This study is to analyze facial micro-movements and to recognize the social emotion such as intimacy, empathy, and valence. 76 universit...
Article
The goal of this study is to present quantification method for empathy. The micro-movement technology (non-contact sensing method) was used to identify empathy level. Participants were first divided into two groups: Empathized and not empathized. Then, the upper body data of participants were collected utilizing web-cam when participants carried ex...
Article
Brain-computer interfaces have been adopting visual evoked potential (VEP) signals to evaluate real-time cognitive responses, which have been shown to differ depending on the system’s panel design and inter-stimulus interval (ISI). The objective of this study was to determine the optimal ISI and display contents for improved VEP signals. The panel...
Article
The condition for the integral floating display is analyzed and evaluated, which elicits the distinguished accommodation responses to different axial locations of targets. The analysis is carried out to derive condition which helps to devise such a system. And measurements of accommodation response from four subjects are conducted to confirm the ag...
Article
Full-text available
In this paper, quantitative spatial context estimation method is proposed which can affect human emotion by analyzing environmental image acquired from the frontal camera. In psychology and marketing fields, visual factors such as color and image complexity have been well-known for influencing human emotion. Based on these factors, a method for rea...
Article
Full-text available
In this study, we study that the video attributes captured by built-in camera in smart-phone can effect on the quality of PPG signal. The conditions of video attributes were composed of the bitrate, the resolution, the flash. As each condition, we measured a change in the red value of the video image and calculated a PPI(Pulse to Pulse Interval) fo...
Article
Full-text available
“Out of the body” tactile illusion refers to the phenomenon in which one can perceive tactility as if emanating from a location external to the body without any stimulator present there. Taking advantage of such a tactile illusion is one way to provide and realize richer interaction feedback without employing and placing actuators directly at all s...
Conference Paper
The eyes of a virtual human avatar are the fundamental means for communicating language and affective feelings in a virtual environment. For this purpose, this study evaluates user's visual feeling according to the changes pupillary responses based on the heart rate for a representing a human avatar; this is considered as a new factor for represent...
Article
Full-text available
As a powerful interaction technology, haptically enhanced virtual environments have found many useful applications. However, few studies have examined how wayfinding of users with visual impairments is affected by VE characteristics. An empirical experiment was conducted to investigate how different environmental characteristics (number of objects...
Chapter
Because the vision-based environmental context awareness technique has become a more important issue for implementing affective computing application, the effects of image components should be investigated in terms of human responses. In this paper, we studied the correlation between heart rate and image components such as hue, saturation, and inte...
Chapter
Life logging in online space has recently been utilized to share emotion rather than to remember daily life.Therefore, this study is to determine social emotion in life logging. Social emotion was analized and collected from emotion vocabularies of 21 power blogging sites in Korea, such as Naver blog, Kakaotalk, Band, Facebook, Instagram, KaKaostor...
Chapter
We live in an era in which social network services are very active due to the development of technology. People are eager to get connected to other people. The present study is aimed to design a model that a user can determine his connection with others based on the temporal explicit movements among his explict information in daily life and identif...
Chapter
This study is to confirm significant group determination for life logging. Six undergraduate students were participated in experiment. They were divided to two groups consist of three persons. Subjects were presented to sixteen movie clips relating to emotion of four categories. PPIs (Pulse to Pulse Intervals) extracted from PPG were analyzed. Pear...
Article
Full-text available
To recognize expressions accurately, facial expression systems require robust feature extraction and feature selection methods. In this paper, a normalized mutual information based feature selection technique is proposed for FER systems. The technique is derived from an existing method, that is, the max-relevance and min-redundancy (mRMR) method. W...