• Title/Summary/Keyword: Visual assessment

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Viewers' Visual Preferences of Seasonal Landscape (계절별 경관의 시각적 선호도)

  • 정윤희;신지훈;임승빈
    • Journal of the Korean Institute of Landscape Architecture
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    • v.30 no.4
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    • pp.19-27
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    • 2002
  • When we research a landscape or make a Landscape Impact Assessment, we use the image of a specific season like summer or fall. Since there are four distinct seasons, each with a different landscape, researchers need to understand viewers′visual preferences for individual seasonal landscapes. The purpose of this study is to investigate viewers′visual preferences according to seasonal change and the respondent′s age, gender and profession. In this research, the independent variable is season: suing, summer, fall, winter and snowy winter. Three landscape types used in the experiment: forest, street and agriculture. Each landscape type has two sites for reliability. The assessment media for this research are pictures featuring landscapes taken in each of the four seasons. The study used the "paired comparison" method for taking the score of visual preference. The results of this study are as follows: 1. The summer landscape has the highest visual preference score. However, spring and fall landscapes should also be considered for visual landscape evaluation. 2. The visual preference of winter landscape covered with snow is very high, but since snow is temporal and irregular, it is difficult to consider this factor for visual landscape evaluation. 3. The visual preference score of winter is the lowest of four seasons. The attractive factors of spring are flowers, summer is greenery and fall is autumnal tints. But these are not present in winter. 4. The result of visual preferences according to age groups, gender and profession have no serious differences. 5. Visual preference to scenery of 4 seasons by age group was not different from general preference and thus was concluded to have no connection with age. 6. As a result from the research of visual preference to scenery of 4 seasons by sex, women were shown to like snow-scene more than men. This study presents an indication of general preferences of seasonal landscapes. It is expected that more advanced study will proceed after this one.

A Study on Efficiency of Pain Management by Questionnaire using Visual Analogue Scale in Back - Pain Patients (Visual Analogue Scale(VAS)을 이용한 동통평가표에 의한 동통관리의 효용성에 관한 연구)

  • Lee, Bok-Hee;Yoon, Hong-Il;Park, Ji-Whan
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.1 no.1
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    • pp.105-112
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    • 1995
  • This study was designed to investigate the efficiency of subjective assessment that exams the subjective symptom of patients with back pain at the department of physical therapy. To assess the subjective symptom, we used the pain questionnaire using visual analogue scale (VAS) that was developed by Wang on 1995. Questionnaires were administered to 31 adult patients(male : 11, female : 20) with herniated lumbar disk(13), low back pain(8), myofascial pain syndrom(5), lumbar strain(4), ankylosing spondylitis(1). Mean age was 36.3 ranged from 20 to 65. The results of this study were as follows : 1) In each of 15 subjects, there was a significant decrease in VAS between pre- and post-treatment(p<0.05). 2) Mean VAS of total subjects was $6.26{\pm}2.55$ in pre-treatment, $4.50{\pm}2.47$ in post-treatment (p<0.001). Result of this study was shown efficiency of pain management by subjective assessment. The continuous study is needed for many interesting illue of pain management using VAS.

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An Objective Quality Assessment Based on Gabor Wavelet (Gabor 웨이블릿 기반 객관적 화질 평가)

  • 엄민영;최윤식;장석각;조봉관
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.41 no.6
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    • pp.81-88
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    • 2004
  • In this paper, we propose a new objective quality assessment method considering the human visual perception characteristics. A subjective quality assessment is obtained by the response of the receptive field in the primary visual cortex and a human's eye can't focus on all of the visual range in a moment. Take advantage of two facts above, we apply Gabor wavelet transform which is well fit the receptive field in the cortex, to divided constant sized subblocks. Then a local distortion of the subblocks and a global distortion for the entire image are calculated in order. The proposed method has been evaluated using video test sequences provided by the Video Quality Experts Group (VQEG). The experimental results show that good correlation with human perception is obtained using the proposed metric, which is what we called GPSNR.

A Study on Framing Techniques of Landscape Assessment Using the Analytic Hierarchy Process - The Assessment on the Landscape Control Points - (AHP 기법을 활용한 경관평가법 작성에 관한 연구 - 경관통제점에서의 평가 -)

  • Suh Joo-Hwan;Yang Hee-Seung
    • Journal of the Korean Institute of Landscape Architecture
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    • v.32 no.4
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    • pp.94-104
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    • 2004
  • This study creates the LCP (Landscape Control Point) through the survey of spot sites for the quality of landscape assessment, which is based on an objective and departmentalized data base; the landscape assessment was achieved by production of weight value with the AHP (Analytic Hierarchy Process) technique, selection of requisites for the landscape assessment with the IVERSON method and visual area analysis with GIS (Geographic Information System). Futhermore, validity of the landscape assessment was verified by analysis of the correlation between physical amount and aesthetic amount. The purpose of this study is to suggest the basic essential data for landscape assessment and landscape planning by the characteristics of landscape based on verification of the suggested landscape assessment methods. The results of this study are summarized below. 1. In the adaptation of landscape assessment using GIS, the landscape assessment points of LCP 18, 17 and 16, which have more visible elements such as hill area, mountain area, and forest and farm land, were indicated to be higher than the others. In contrast, the landscape assessment points of LCP 13, 6 and 10, which have less visible elements, were relatively lower than the others. 2. In the visible preference measuring method, LCP 4, 14, and 16 showed high points of landscape assessment with 3.46, 3.4, and 3.18 each. With the more natural environments such as hill area, mountain area, and forest and farm land, higher results were shown. In contrast, LCP 7, 1, and 9 showed low points of landscape assessment with 2.24, 2.36, and 2.53 each. 3. In this study, a coefficient of 0.746 was gained by the analysis of correlation between the points of landscape assessment method and the points of visual preference from a slide show. This has 99 percent of probability in statistical data. 4. In conclusion, with the demonstration of the correlation between the landscape assessment method based on the AHP technique and the aesthetic amount (preference proportion), the practical use of landscape assessment can be demonstrated by the suggested landscape assessment method.

Visual Impaxt Assessment of Hallasan National Park Management Action (한라산국립공원 관리시책의 경관영향평가)

  • 고동희
    • Korean Journal of Environment and Ecology
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    • v.11 no.1
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    • pp.1-17
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    • 1997
  • Now, a management plan is being prepared to conserve the landscape and eco-system of Hallasan National Park. A major concern of park managers and residents is the visual impact that activities have of the Mt. Hala landscape. One of the most important aspects of making management decisions is assessing the visual impact of proposed actions accurately enough to judge whether or not those actions are acceptable. Park managers and residents need methods they can use to assess the visual impact of various management actions. The impact of proposed management activities was portrayed by CCG Photomontage techniques and viewers rated sets of color photomontages on a 7 point SD scale. The findings were as follows : the CCG Photomontage is quite practical, vegetation restoration is necessary, and the proposed management actions are feasible. The visual simulation technique and assessment method in this research helps residents visualize and respond to management activities, making residents' participation in the planning process more effective.

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Aesthetic Value of Korean National Parks' Landscape: Its Appreciation and Protection Strategies (국립공원 경관 가치의 증진방안)

  • Park, Kyeong
    • Journal of Environmental Impact Assessment
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    • v.12 no.5
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    • pp.369-382
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    • 2003
  • Natural resources managers have considered the landscape without detailed consideration of aesthetic values of the landscape and geomorphological significance of unique landforms. Since EIA system was introduced in 1981, values associated with landscape protection have been neglected at best compared with those values traditionally attributed to environmental protection, including clean air, water quality and species protection. Black top highways are being built without consideration of harmful effects to the sea cliffs. Sea walls and tetrapod are being installed to protect the coastal towns and fish markets for tourist. However, beach itself are experiencing accelerated erosion due to the shortage of proper coastal engineering expertise. Hotels and condominiums are under construction on a massive scale around the national parks, which substitute the scenic ridges with concrete profiles. To protect the scenic beauty of national parks, their design and construction material should be more harmonious with the surroundings. Therefore, visual impact assessment should be applied both within the national park boundary and beyond to enhance the aesthetic values of national parks.

A Study on the Semiology and Quantitative Psychological Analysis of Sequence Landscape of National Park (국립공원 Sequence 경관의 기호학과 계량심리학적 분석에 관한 연구)

  • 김세천
    • Journal of the Korean Institute of Landscape Architecture
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    • v.19 no.3
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    • pp.55-71
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    • 1991
  • The purpose of this thesis is to suggest objective basic data for the environmental design through the quantitative analysis of the visual quality included in the physical environment of Basemsagol valley sequence landscape. For this, visual volumes of physical elements have been evaluated by using the mesh analysis, spatial images structure of physical elements have been analyzed by factor analysis algorithm, and degree of visual quality have been measured mainly by questionnaires. Also, this study aims to understand semiotics and to grope the possibility of application to the sequence landscape assessment. A semiological approach suggests a new dimension in sequence landscape assessment, which is a contrast to the existing scientific evaluation methods. Result of this thesis can be summarized as follows. Visual volumes of the immediate vegetation, rock, bridge, road and distant vegetation are found to be the main factor determining the visual quality. Factors covering the spatial image of natural park sequence landscape have been found to be the overall synthetic evaluation, potentiality, natural quality, spatial, appeal and dignity. By using the control method for the number of factors, T.V. has been obtained as 40.22%. The characteristics of the semiological approach is qualitative, open, holistic, and experiential, whereas that of the scientific approach is quantitative, closed, reductive, and experimental.

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Visual Field Defect after Taking Atorvastatin/Ezetimibe, a Case Study (Atorvastatin/ezetimibe 복합제 복용 후 발생한 시야결손 부작용 사례보고)

  • Kim, Jiyoon;Lee, Kyunggyu;Kim, Junyoung;Lee, Jung-Min;Kim, Na-Young;Lee, Mo-Se;Ji, Eunhee
    • Korean Journal of Clinical Pharmacy
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    • v.29 no.2
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    • pp.133-137
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    • 2019
  • Atorvastatin is one of the most widely prescribed medications for dyslipidemia treatment. In Korea, post combined therapy with ezetimibe, a 73-year-old woman was reported by a community pharmacy to have experienced visual field defect, which recovered after drug discontinuation. She had never experienced this symptom before, and several studies have reported an association between use of statins and visual disorders such as blurred vision, diplopia, and cataract. Blockage of cholesterol accumulation, oxidative stress, or myopathy is expected to be a cause of this symptom. Naranjo scale, Korean causality assessment algorithm (Ver.2), and World Health Organization-Uppsala Monitoring Center (WHO-UMC) criteria were the three tools used to determine causality between the visual disorder and atorvastatin. The results represent 'probable', 'certain', and 'probable/likely' causality, respectively. Our results, in combination with a review of literature, indicate that ocular adverse effects are highly likely related to atorvastatin.

Effects of a Bilateral upper Limb Training Program Using a Visual Feedback Method on Individuals with Chronic Stroke: A Pilot Clinical Trial

  • Kang, Dongheon;Park, Jiyoung;Choi, Chisun;Eun, Seon-Deok
    • International Journal of Contents
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    • v.17 no.2
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    • pp.20-31
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    • 2021
  • This study aimed to pilot test a newly developed bilateral upper limb rehabilitation training program for improving the upper limb function of individuals with chronic stroke using a visual feedback method. The double-group pretest-posttest design pilot study included 10 individuals with chronic stroke (age >50 years). The intervention (four weekly meetings) consisted of five upper limb training protocols (wrist extension; forearm supination and pronation; elbow extension and shoulder flexion; weight-bearing shift; and shoulder, elbow, and wrist complex movements). Upper limb movement function recovery was assessed with the FuglMeyer Assessment of the Upper Extremity, the Wolf Motor Function Test, the Trunk Control Test, the modified Ashworth Scale, and the visual analog scale at baseline, immediately after, and four weeks after the intervention. The Fatigue Severity Scale was also employed. The Fugl-Meyer Assessment of the Upper Extremity and Wolf Motor Function Test showed significant improvement in upper limb motor function. The Trunk Control Test results increased slightly, and the modified Ashworth Scale decreased slightly, without statistical significance. The visual analog scale scores showed a significant decrease and the Fatigue Severity Scale scores were moderate or low. The bilateral upper limb training program using the visual feedback method could result in slight upper limb function improvements in individuals with chronic stroke.