• Title/Summary/Keyword: Visual-perception function

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Study on the Movement and Structural Axis in Exhibition Space (전시공간의 구성축과 관람순로에 관한 기초적 연구)

  • 정수영;차소란;임채진
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2003.05a
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    • pp.44-49
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    • 2003
  • Exhibition can be a type of mass-communication since it should contains some 'meaning' or 'message' that is to be delivered. The purpose of visiting museum is to view exhibits. Thus, factors, such as exhibits, exhibition media, show-case, direction signs, and gates, form visual perception, which means there exists homogeneity between visual perception and action. Visitors acquire knowledge by the space interaction when one can acknowledge the consecutive time flow while moving along the exhibition space. Visitors' movements can be formed by visual and perceptive experience that follows environmental stimulus and individual desire. Therefore, museum visitors experience certain shift flow with visual perception caused by the continuity of space. Thus, the research on development of focus in continuity is required. In addition, if the quality of exhibition space and organized continuity with visual diversity can be improved in exhibition design, it would expand the function of communication in exhibitions.

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Instrumental Activities of Daily Living, Leg Muscle Strength, Cognitive and Visual Function According to Demographic Variables and the Experience of Falling in Community Resident Elderly Koreans (지역사회 재가 노인의 인구학적 특성과 낙상경험에 따른 일상생활 수행능력, 하지근력, 인지기능 및 시각기능)

  • Sohng, Kyeong-Yae;Choi, Dong-Won
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.14 no.2
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    • pp.221-229
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    • 2007
  • Purpose: To investigate the instrumental activities of daily living (IADL), leg muscle strength, cognitive and visual functions according to the participants' demographic characters and experiences of falling in Korean elder who are residents in the community. Method: Data were collected from 351 participants aged 65 or more, who were ambulatory, A structured questionnaire and several physical function measurements were used to collect the data which were analyzed using the SAS program. Results: The participants' IADL scores were significantly different according to their age, educational level and living situation. The leg muscle strength of the elders were significantly different according to gender and age, and were also related the risk of falling. Cognitive scores were significantly different according to gender, age, education level and marital status. Visual acuity and depth perception were significantly different according to age, education level, and marital status. Conclusion: Demographic variables and experience of falling were identified as variables related to IADL, leg muscle strength, cognitive and visual function of elders. Further study with a larger and nation-wide sample is needed to identify the variables related to the physical and cognitive functions of elders.

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Adaptive Processing for Feature Extraction: Application of Two-Dimensional Gabor Function

  • Lee, Dong-Cheon
    • Korean Journal of Remote Sensing
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    • v.17 no.4
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    • pp.319-334
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    • 2001
  • Extracting primitives from imagery plays an important task in visual information processing since the primitives provide useful information about characteristics of the objects and patterns. The human visual system utilizes features without difficulty for image interpretation, scene analysis and object recognition. However, to extract and to analyze feature are difficult processing. The ultimate goal of digital image processing is to extract information and reconstruct objects automatically. The objective of this study is to develop robust method to achieve the goal of the image processing. In this study, an adaptive strategy was developed by implementing Gabor filters in order to extract feature information and to segment images. The Gabor filters are conceived as hypothetical structures of the retinal receptive fields in human vision system. Therefore, to develop a method which resembles the performance of human visual perception is possible using the Gabor filters. A method to compute appropriate parameters of the Gabor filters without human visual inspection is proposed. The entire framework is based on the theory of human visual perception. Digital images were used to evaluate the performance of the proposed strategy. The results show that the proposed adaptive approach improves performance of the Gabor filters for feature extraction and segmentation.

Novel Measurement Method for Evaluating Moving Picture Quality of Display

  • Kim, Jae-Shin;Chong, Jong-Ho;Kim, Sang-Ho;Kim, Gun-Shik;Bae, Jae-Woo;Lee, Seung-Bae;Oh, Jun-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.1039-1042
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    • 2008
  • We propose a novel method to measure moving picture quality of display. This method simulates human visual system based on CSF (Contrast Sensitivity Function). And it evaluates moving picture quality of display on the image captured by pursuit camera. The results from this method are correlated with human visual perception test very well.

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The Home-based Program for Child with Sensory Modulation Disorder: Case Study (감각조절장애 아동에 대한 가정 프로그램의 적용 - 사례연구)

  • Lee, Ji-Young;Kim, Sung-Eun
    • The Journal of Korean Academy of Sensory Integration
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    • v.5 no.1
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    • pp.41-49
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    • 2007
  • Objective: To evaluate the effectiveness of the home-based program composed of sensory diet for child with sensory modulation disorder. Method: The subject underwent the home-based program composed of sensory diet for 8 months. Evaluation tools we used are the Developmental Screening Test II(DDSTII) for developmental screening; the Short Sensory Profile(SSP), clinical observation and the clinical history record form for sensory integrative function; the Motor-Free Visual Perception Test(MVPT) and draw a person test for visual perception. Evaluation was executed before and after the program is provided. Results: The subject has showed remarkable improvement in developmental level, sensory integrative function and visual perceptual ability after went through the home-based program. Conclusion: The home-based program composed of sensory diet is effective for children with sensory modulation disorder when it is difficult to apply classical sensory integrative approach.

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The Comparative Analysis of Visual Perceptual Function and Impulse on Players Chagi in Taekwondo Events (태권도 종목별 선수들의 차기에 대한 시지각기능 및 충격량 비교 분석)

  • Lee, Young-Rim;Ha, Chul-Soo
    • Korean Journal of Applied Biomechanics
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    • v.20 no.2
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    • pp.205-212
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    • 2010
  • The purpose of this study was to compare the efficiency of visual perception and impulse according to the three types of Taekwondo players to be able to supply an efficient training method, for this a total of 12 representative Taekwondo players of the Korean National team, 4 poomsae players, 4 kyokpa players and 4 kyorugi players weighting between 68 to 74 kg, and the results from the motion analysis system, eye tracker and Electronic hogu are as follows. For the visual perceptual function, the total body reaction time was slowest for the kyokpa group, and for the visible reaction and vision fixation time was longest of the poomsae group, while the performance movement was fastest for the kyorugi group. As for description of the two kicking motions dollyo chagi and dolgae chagi the longer visual fixation helps the accuracy of the kick. In conclusion, as there was a difference between the groups, this information could help to train the visual perception of players according to what event they are participating in.

Screen Disparity and Size Perception Function of Various 3D Stimuli (양안시차에 따른 다양한 3D 자극의 크기지각 예측함수 개발)

  • Park, JongJin;Li, Hyung-Chul O.;Kim, ShinWoo
    • Journal of Broadcast Engineering
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    • v.18 no.1
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    • pp.66-76
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    • 2013
  • Although there has been much advance in the development of 3D displays of various purpose, 3D contents are not yet so used as expected in those displays. One well-known obstacle in the enjoyment of 3D contents is visual fatigue, but another major issue is image distortion of 3D contents. In the previous research, Shin, Li, & Kim (2012) reported systematic linear relationship between screen disparity and size perception of a simple object whose retinal size was constant across different disparities. In this research, we intended to generalize the previous finding by using various 3D stimuli in the test of the relationship between screen disparity and size perception of those stimuli. Consistent with previous findings, our data indicated that size perception linearly changes as a function of screen disparity and the linearity was observed in all stimuli types we used in this research. We described the empirical relationship between screen disparity and size perception in the form of prediction function for size perception in which visual angle is the predictor. This function will be very useful in the creation of 3D contents as one can make reasonable predictions on the to-be-perceived size of an object being filmed using screen disparity of their camera setting.

The Effects of Cognitive Training Using Application Games of Smart Device on Cognitive Function in Patients With Mild Traumatic Brain Injury (스마트기기 애플리케이션 게임을 이용한 인지훈련이 경미한 손상이 있는 외상성 뇌손상 환자의 인지기능에 미치는 영향)

  • Kang, Seon-Hwa;Kim, Young-Sil;Kang, So-La;Moon, Jong-Hoon
    • Journal of Korean Society of Neurocognitive Rehabilitation
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    • v.10 no.2
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    • pp.9-18
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    • 2018
  • The research has sought to examine the effect of cognition training using smart device application games on the cognition function of traumatic brain injury patients. The research was conducted to the seventeen traumatic brain injury patients with slight symptoms who were treated with occupational therapy. The patients were divided into the two groups, nine for the experimental group and eight for the control group. The experimental group was assigned to conduct cognition training using smart device application games and traditional cognition training for fifteen minutes each, and the control group has conducted the traditional cognition training for 30 minutes. All arbitrations were conducted for 30 minutes a day, five times a week and for four weeks. To assess the cognitive function, Korean Mini-Mental State Examination (K-MMSE), Lowenstein Occupational Therapy Cognitive Assessment (LOTCA) and visual memory 1 and 2 of Motor-free Visual Perception Test-3 (MVPT-3) were measured before and after the intervention. In the comparison of the change between the two groups, the experimental groups showed a significant improvement in the visual memory of Motor-free Visual Perception Test-3 and remembrance section of the Korean Mini-Mental State Examination (p<.05). The result of this research has confirmed that the cognition training using the smart device application game can make the positive change to the visual memory of the traumatic brain injury patients more than the traditional cognition training.

Emotional Image Quality Evaluation Technology for Display Devices

  • Lee, Eun-Jung;Lee, Seung-Bae
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.3
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    • pp.10-17
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    • 2009
  • In this paper, we explained the relation between evaluating display device and emotional image quality evaluation in human perceptual view. It is also suggested two emotional image quality evaluation method of display reflecting human visual function. One is the color space of CIECAM02 and the other is capturing moving image. It is necessary to standardize the evaluation methods of image quality based on emotional evaluation.

NEUROPSYCHOLOGY IN NEURODEVELOPMENT (발달 신경심리학)

  • Shin Min-Sup;Kim Hyun-Mi
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.16 no.1
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    • pp.33-46
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    • 2005
  • First, the author reviewed the relationship between human brain development and cognitive functions such as attention, perception, memory, and language. And then Luria's neurodevelopmental theory and its application on the Neuropsychological test battery for children were reviewed. Finally, various assessment tools to evaluate attention, intellectual function, visual-perception, visual-motor coordination, and executive function were examined.

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