• Archives of design research
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• v.20 no.2 s.70
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• pp.89-102
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• 2007

Seoul suffers from over congestion of outdoor signage. Signage is on everywhere including on windows, on entrance way, on every available space on the building wall. The excessiveness is up to the point that decorating surface of a building is almost meaningless and most signage is lost in each other's profuse presence. The competition to attract more attention is resulting in bigger, brighter, and more stimulating signage. As the result, outdoor signage of Seoul have lost its intended function to provide useful information and befallen to be viewed as visual pollution. As it is an important visual element of city view, the outdoor signage also serves important role of delivering needed information in proper way to enhance convenience of city life. At the same time, it is a very important marketing tool that is essential to economic activity. Outdoor signage also holds enormous potential to act as a visual and structural element to improve city view just as a beautiful architecture does. However, outdoor signage that does not consider the harmony with its surrounding environment can only be treated as visual pollution. The effort of Seoul to better the city view by improving the outdoor signage started at Jong-ro area. By reforming outdoor signage, the streets of Jong-ro achieved much more harmonious and aesthetically pleasing city view. The study went through analysis of current status and characteristics of outdoor signage of Cheonho-dong Rodeo Street, Gangdong district to suggest detailed design solution to reform the roadside view and to revitalize the street.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.4
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• pp.123-128
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• 2020

Technology in digital video has changed the functions of the digital video field based on various platforms, including streaming, on-demand, interactive, and data-based services. The displays that provide the visual representations of these digital video contents have also been improving with various changes. There is a variety of display screen ratios currently available, with the ratio of the display screen being based on the intended purpose. This study conducted a psychophysics experiment to examine the correlation between colour properties and shape ratio based on the display screen ratio, and then analysed the results. The colours used in the experiment were visual perception-based Munsell colours, and the hue, brightness, and chroma attributes were analysed according to the shape ratio to examine colour properties. The analysis of the results of this study defined the significance of the study as basic data for future studies on colour property changes based on shape ratio, and suggested directions for future studies.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.438-440
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• 2018

Cardiac arrest is a series of conditions that occur when the heart is stopped, regardless of the cause. Cardiac arrest due to heart disease is included in the cause of death in korea every year and is unpredictable. One of the only ways to save a patient's life when a cardiac arrest is cardiopulmonary resuscitation is to maintain circulation through this procedure. The visual information is transmitted to the brain through the optic nerve. Among them, the mittor can see its movement and its shape, and it can be used for correction and analysis. Therefore compared the quality of chest compressions with visual information using mirrors. There was a significant difference in the mean depth of chest compressions($48.93{\pm}6.76$, $53.86{\pm}4.56$, <0.001), and there was also a difference in compression to relaxation ratio($0.87{\pm}0.13$, $0.96{\pm}0.10$, <0.002). There was also a significant difference in attitude awareness($4.93{\pm}0.85$, $8.14{\pm}1.38$, <0.001).

• Journal of KIISE:Software and Applications
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• v.31 no.12
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• pp.1621-1627
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• 2004

The decrease of visual quality at scene change occurs when the difference between the amount of target bits and actual coding is high. Especially, scene change at the P-Picture can lead to severely degrade visual qualities at itself and the pictures referencing it. In this paper, under the occurrence of scene change, we propose a new method, based on the analysis of existing inaccurate bits allocation, to improve the visual qualities of scene-changed and following pictures. The method allocates extra bits to scene-changed Picture and changes them upto the level of the complexity of intra picture. Also, the method changes target bits of following pictures upto the complexity of picture prior to the scene change. Computer simulation shows that the proposed method has improved 0.5-1.2dB higher than TM5 method in terms of PSNR.

• The Journal of the Korea Contents Association
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• v.9 no.6
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• pp.153-164
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• 2009

The export on visual and game industry has grown very rapidly and is expanding its role in economic growth. In contrast, researches on these firms' financial performances in strategic and policy point of view are difficult to be found regarding the export of cultural industry. In this study, we analysis the effects of firms export in cultural industry on their financial performances focusing on game and visual industry. We find that the recent activities of export in game industry have positive effect on firm's growth in game industry. However, we find that the export deteriorate the net profit. On the other hand, we find no significant results in the case of visual game industry. Our results suggest that we need more strategic approaches in exporting goods in contents industry.

• Journal of Broadcast Engineering
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• v.24 no.5
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• pp.827-835
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• 2019

In the pooling stage of a full reference image quality assessment (FR-IQA) technique, the global perceived quality for any distorted image is usually measured from the quality of its local image patches. But all the image patches do not have equal contribution when estimating the overall visual quality since the degree of degradation on those patches depends on various considerations i.e., types of the patches, types of the distortions, distortion sensitivities of the patches, saliency score of the patches, etc. As a result, weighted pooling strategy comes into account and different weighting mechanisms are used by the existing FR-IQA methods. This paper performs a thorough analysis and proposes a novel weighting function by considering the luminance adaptation as well as the visual saliency effect to offer more appropriate local weights, which can be adopted in the existing FR-IQA frameworks to improve their prediction accuracy. The extended experimental results show the effectiveness of the proposed weighting function.

• Journal of the Korea Convergence Society
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• v.9 no.12
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• pp.281-286
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• 2018

The purpose of this study was to evaluate the degree of heterophoria variations according to visual fatigue induced by increasing number of examinations while repeating binocular vision examinations. Twenty - one adults in their twenties who had no heterotropia other eye disease or systemic disease underwent binocular vision examinations. As the examinations progressed, the degree of heterophoria increased in both orthophoria and heterophoria. When the distance examinations was repeated 5 times, orthophoria increased degree of $1.56{\Delta}$ heterophoria. and heterophoria increased degree of $1.63{\Delta}$ heterophoria. When the near examinations was repeated 5 times, orthophoria increased degree of $1.78{\Delta}$ heterophoria. and heterophoria increased degree of $2{\Delta}$ heterophoria.. As the number of examinations increased, the result gradually deviated from the normal range as visual fatigue increased. The degree of the variation is judged to be enough to make the wrong prescription in the clinic. In conclusion, it was found that the binocular vision examinations should be conducted more accurately and promptly.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.1
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• pp.371-384
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• 2019

Motion perception has been tremendously improved in neuroscience and computer vision. The baseline motion perception model is mediated by the dorsal visual pathway involving the cortex areas the primary visual cortex (V1) and the middle temporal (V5 or MT) visual area. However, few works have been done on the extension of neural models to improve the efficacy and robustness of motion perception of real sequences. To overcome shortcomings in situations, such as varying illumination and large displacement, an adaptive V1-MT motion perception (Ad-V1MTMP) algorithm enriched to deal with real sequences is proposed and analyzed. First, the total variation semi-norm model based on Gabor functions (TV-Gabor) for structure-texture decomposition is performed to manage the illumination and color changes. And then, we study the impact of image local context, which is processed in extra-striate visual areas II (V2), on spatial motion integration by MT neurons, and propose a V1-V2 method to extract the image contrast information at a given location. Furthermore, we take feedback inputs from V2 into account during the polling stage. To use the algorithm on natural scenes, finally, multi-scale approach has been used to handle the frequency range, and adaptive pyramidal decomposition and decomposed spatio-temporal filters have been used to diminish computational cost. Theoretical analysis and experimental results suggest the new Ad-V1MTMP algorithm which mimics human primary motion pathway has universal, effective and robust performance.

• Journal of radiological science and technology
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• v.41 no.6
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• pp.545-552
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• 2018

The purpose of this study was evaluated the relationship between echocardiography and cardiac computed tomography in normal adults by visual assessment, and evaluated the effective doses of cardiac computed tomography. The subjects were 100 normal patients who visited two general hospitals in Chungnam, from January 1 to May 30, 2018. We obtained images by using these modalities and evaluated the wall thickness and internal dimension of the Left Ventricle with visual assessment. To evaluate the appropriateness of the visual evaluation, two evaluators who were trained for one week were measured and the agreement between the evaluators were verified by statistical analysis. The effective doses of computed tomography were evaluated using the dose length product. As a result, there was a high correlation between the two modalities. The agreement between the two visual evaluator were also highly agreed. The mean X-ray dose of the subjects was $11.1{\pm}3.1mSv$. Although the purpose of imaging is somewhat different in the clinical setting, echocardiography could achieve the same results as radiation-invasive computed tomography. It is thought that utilization will become even larger.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.528-537
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• 2021

This thesis aims to analyze the possibility of the self-representation style of Korean post-documentaries in the 2000s and analyze the possibilities of the visual writing. First of all, this study examined the theoretical background of the documentary, and derived the theoretical concepts from the poetic style and the performance style presented by Bill Nichols, and divided the strategies of self-representation in the post documentary into three categories. The three strategies of self-representation were to discuss the possibility of self-representation through the analysis of works through self-representation as self-emotion, self-representation as body, and self-visual representation. In the process of this discussion, I will examine how self-representation style deconstructs the existing visual system consisting of the system of the power and functions as a alternative visual writing that can appear various women and minorities.