• Journal of the Computational Structural Engineering Institute of Korea
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• v.37 no.2
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• pp.143-149
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• 2024

Segmentation of material phases through image analysis is essential for analyzing the microstructure of materials. Micro-CT images exhibit variations in grayscale values depending on the phases constituting the material. Phase segmentation is generally achieved by comparing the grayscale values in the images. In the case of waste concrete used as a recycled aggregate, it is challenging to distinguish between hydrated cement paste and natural aggregates, as these components exhibit similar grayscale values in micro-CT images. In this study, we propose a method for automatically separating the aggregates in concrete, in micro-CT images. Utilizing the Unet-VGG16 deep-learning network, we introduce a technique for segmenting the 2D aggregate images and stacking them to obtain 3D aggregate images. Image filtering is employed to separate aggregate particles from the selected 3D aggregate images. The performance of aggregate segmentation is validated through accuracy, precision, recall, and F1-score assessments.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.895-897
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• 2019

모바일의 기술 발전과 소셜미디어 사용의 증가로 수없이 많은 멀티미디어 콘텐츠들이 생성되고 있다. 이러한 많은 양의 콘텐츠 중에서 사용자가 원하는 이미지를 효율적으로 찾기 위해 의미 기반 이미지 검색을 이용한다. 이 검색 기법은 이미지에 의미 있는 정보들을 이용하여 사용자가 찾고 자하는 이미지를 정확하게 찾을 수 있다. 본 연구에서는 모바일 환경에서 이미지가 가질 수 있는 의미적 정보를 어노테이션 하고 이와 더불어 모바일에 있는 이미지에 풍성한 어노테이션을 위해 딥러닝 기술을 이용하여 다양한 태그들을 자동 생성하도록 구현하였다. 이렇게 생성된 어노테이션 정보들은 의미적 기반 태그를 통해 RDF 트리플로 확장된다. SPARQL 질의어를 이용하여 의미 기반 이미지 검색을 할 수 있다.

• Archives of design research
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• v.14 no.4
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• pp.77-85
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• 2001

In order to sustain competitive advantage through strategic product differentiation in global market, this research aims to establishment of strategic design conditions for domestic manufacturing firms through the means of product image alignment and positioning, using visual character of product as the foundation for establishing corporate image. Case studies on how globally successful multinational companies manage design strategy and corporate culture uniformly for coherent product image management are reviewed. To establish product image alignment methodology for manufacturing firms, the criteria for product image positioning and aligned product image development process are developed in three stages. First, in image positioning stage, it is important to set the direction for corporate image and design strategy by identifying consumer needs through market trends analysis and forecasting as well as comparative positioning of the analysis results of the firms's own corporate image and that of the competitor's. Second, in awareness building stage, before building the product image alignment, firm-wide shared awareness of differentiated corporate and product image, establishment of designer's role as the consolidated manager of product image, sharing form language, and building the infrastructure for defining form information should be preceded. Third, in managing the aligned product image stage, the condition for setting up image information management guideline, management of decision making process for arriving at logical decisions on product form, development of guideline for increasing efficiency and its evaluation system, and co-development of related design should be induced. Further research on the product image alignment with corporate image should be conducted through various empirical studies on image and form, building an information system of related design language, and continuous assessment and management of applied solutions.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06c
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• pp.274-276
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• 2012

최근 이미지들이 의료, 군사, 산업등 많은 분야에서 사용되고, 다양한 정보를 담고 있다. 하지만 유출시 많은 문제를 야기 시킬 수가 있으며, 컴퓨팅의 발전으로 이미지의 해상도는 점점 향상되고 있어서 예전보다 정확하고 많은 정보가 노출될 수 있다. 이러한 문제를 해결하기 위하여 이미지 암호화에 관한 다양한 기법들이 소개 되었다. 하지만 이러한 기법들은 작은 크기나 적은 색 정보에서 가능한 기법들이 대부분이었다. 그리고 현재 많이 사용되는 다중코어나 클라우드 컴퓨팅 환경에서 효과적으로 사용할 수 있는 기법들에 대한 연구가 활발히 이루지지 않았다. 본 논문에서는 다중코어나 클라우드 컴퓨팅 환경에서 효과적으로 사용될 수 있는 병렬 이미지 암호화 기법을 제안한다. 병렬 연산을 위해 이미지를 작은 이미지 단위로 나눌 때 발생할 수 있는 Jigsaw puzzle 공격에 취약점을 노출하지 않도록 일정한 크기로 나누어서 처리하는 기법대신에 다양한 크기로 나눠서 처리하는 기법을 제안하고 구현 및 검증하고자 한다.

• Journal of Korea Multimedia Society
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• v.8 no.3
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• pp.355-361
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• 2005

This paper proposed a system collecting image information by agents in multi-threaded environment and then retrieving them with content based image retrieval. This system uses multi threads to retrieve web information effectively, then improves efficiency of CPU cycles to reduce latency time, which is the time requesting queries, executing communication processing 4hat the retrieval agents perform and filtering the retrieval results. Also, the agents for image retrieval use Java language, which is platform independent, to be suitable for distributed environment. Using JDBC to save the retrieved images, the agents are connected to database. The images themselves are stored in distributed agents' databases, and only the image indexes are stored in an index server so that the efficiency of storage and retrieval time can be improved.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.1D
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• pp.93-106
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• 2008

Domestic construction industry that accounts for nearly 17.5 percent of GDP is one of the major industries that has been leading domestic economy development. However, accumulated negative image such as corruption, fraudulent work and 3D industries shadowing the remarkable achievement is rampant. In order to improve the image for construction industry, this research investigated various cases and activities related to the image enhancement. Cases analyzed include activities of National Center for Construction Education and Research (NCCER) and Construction Industry Training Board (CITB) such as 'Build Your Future', 'Construct My Future', 'Positive Image 2004', and so on. Based on the analysis results, a strategic framework to improve the image of Korean construction industry was proposed. It is envisioned that improved image of the industry will positively affect the growth of the construction industry by attracting more qualified human resources.

• The Journal of the Korea Contents Association
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• v.17 no.6
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• pp.452-469
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• 2017

The purpose of this study is to examine consumer's cognitive, affective and behavioral responses to in-store's servicescapes in restaurant by confirming the effect of service environment factors such as ambient, layout, interior and auditory on perceived service quality and image as cognitive responses, and the effect of perceived service quality and image on affective satisfaction as affective response, and the effect of affective satisfaction on repurchase intention as a behavioral responses. To this end, the research hypothesis was verified by structural equation model analysis using SPSS 21.0 and AMOS 20.0 statistical packages. The results of study are as follows. First, ambient environment, interior environment and auditory environment had significant influence on perceived service quality, but interior environment had no effect. Second, ambient environment and layout environment had a significant influence on the image, while the interior environment and auditory environment had no effect. Third, perceived service quality had a significant effect on emotional satisfaction, but had no effect on image and repurchase intention. Finally, image had a significant effect on emotional satisfaction and repurchase intention. Therefore, the marketing manager of the restaurant will need to plan and implement a service marketing strategy that will increase consumers' visit by enhance the perceived service quality level by improving ambient environment, layout environment and auditory environment, and increase image by improving ambient environment and layout environment.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2012.10a
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• pp.91-94
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• 2012

• Journal of Korea Game Society
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• v.5 no.1
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• pp.53-60
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• 2005

To produce deep, entertaining mobile content, a large number of images must be included. But because of the limits on runtime memory for mobile phones, images cannot be used as easily in a mobile environment as they are in a computer. Therefore in this paper, I propose several different methods for efficiently using images in a mobile environment. The various methods I propose for using images are: Creating images using compression/decompression and rotation/symmetry Creating images of several different colors by changing the palette index of a bitmap Creating images through image combination Creating background images by using tile maps Creating new images through effects.

• Journal of Digital Contents Society
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• v.8 no.2
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• pp.191-203
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• 2007

Increasing concern of urban community environment with acceleration of economic growth in modern generation, forcing us to recognize city's environment composition causes important factor for city's spirit. Since implementation of accountability of local government in 1995, local governments are thrives local government activation, compositing financially self support local government and competitiveness by others seeking number of methods for establishing traditional local images. In this study, analyzes cases in street environment facilities to help and support local government developing and applying special features of historical and cultural local images toward street environment facilities in city of Andong. For expression of local image in active installation of street environment facilities will increase tourism and extra value creating self esteem of local people will endures further rapid development of local government. local government seriously consider continuously supporting investment and research in street environment facilities.