• KIISE Transactions on Computing Practices
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• v.22 no.6
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• pp.290-295
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• 2016

Recently, folksonomy-based image-sharing sites where users cooperatively make and utilize tags of image annotation have been gaining popularity. Typically, these sites retrieve images for a user request using simple text-based matching and display retrieved images in the form of photo stream. However, these tags are personal and subjective and images are not categorized, which results in poor retrieval accuracy and low user satisfaction. In this paper, we propose a categorization scheme for folksonomy images which can improve the retrieval accuracy in the tag-based image retrieval systems. Consequently, images are classified by the semantic similarity using text-information and image-information generated on the folksonomy. To evaluate the performance of our proposed scheme, we collect folksonomy images and categorize them using text features and image features. And then, we compare its retrieval accuracy with that of existing systems.

• Journal of KIISE
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• v.43 no.1
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• pp.47-53
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• 2016

While the Internet develops rapidly, a huge amount of image data collected from smart phones, digital cameras and black boxes are being shared through social media sites. Generally, social images are handled by tagging them with information. Due to the ease of sharing multimedia and the explosive increase in the amount of tag information, it may be considered too much hassle by some users to put the tags on images. Image retrieval is likely to be less accurate when tags are absent or mislabeled. In this paper, we suggest a method of extracting tags from social images by using image content. In this method, CNN(Convolutional Neural Network) is trained using ImageNet images with labels in the training set, and it extracts labels from instagram images. We use the extracted labels for automatic image tagging. The experimental results show that the accuracy is higher than that of instagram retrievals.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.594-596
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• 2022

This paper relates to a system for pre-processing high-definition images acquired through a camera mounted on an unmanned aerial vehicle(UAV) and transmitting them to a server through a mobile communication network. In the case of the existing UAV system for image acquisition service, the acquired image was stored in the external storage device of the camera mounted on the UAV, and the image was checked by directly moving the storage device after the flight was completed. In the case of this method, there is a limitation in that it is impossible to check whether image acquisition or pre-processing is properly performed before directly checking image data through an external storage device. In addition, since the data is stored only in an external storage device, there is a disadvantage that data sharing is cumbersome. In this paper, to solve the above problems, we propose a system that can remotely check images in real time. Furthermore, we propose a system and method capable of performing pre-processing such as geo-tagging and transmission through a mobile communication network in addition to image acquisition through shooting in an UAV.

• Korean Association of Arts Management
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• no.53
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• pp.207-247
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• 2020

is a project for the senior generation with humanistic knowledge to become a mentor and communicate with them to present the wisdom and direction of life to the new generations of mentees based on various life experiences. has been expanding since 2015, starting with the pilot operation in 2014. In general, projects such as these are assessed to establish effectiveness indicators to verify effectiveness and to establish project management and development strategies. However, most of the evaluations have been conducted quantitatively and qualitatively based on the short-term duration of the project. Therefore, in the case of continuous projects such as , especially in the field of culture and arts where long-term effectiveness verification is required, the short-term evaluation is difficult to predict and judge the actual meaningful effects. In this regard, tried to examine the qualitative change of key participants in this project through the 2017 and 2018 image tracking survey. For this purpose, we adopted qualitative research methodology through interview video shooting, field shooting, and value coding as a research method suitable for the research subject. To analyze the results, first, the interview images were transcribed, keywords were extracted, value encoding works were matched with human psychological values, and the theoretical method was used to identify changes and to derive the meaning. In fact, despite the fact that the study conducted in this study was a follow-up survey, it remained a limitation that it analyzed the changed pattern in a rather short time of 2 years. However, this study systemized the specific methodology that researchers should conduct for follow-up and provided the flow of research at the present time when there is hardly a model for follow-up in the field of culture and arts education business in Korea as well as abroad. Significance can be derived from this point. In addition, it can be said that it has great significance in preparing the detailed system and case of comparative analysis methodology through value coding.

• Proceedings of the KIEE Conference
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• 2004.07d
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• pp.2586-2588
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• 2004

현재 SCORM 콘텐츠를 제공하는 대부분의 시스템은 콘텐츠에서 사용하는 데이터가 하나의 교육목표를 가지는 콘텐츠 패키지에 함께 포함되어 있다. 콘텐츠를 만들 때 필요한 파일은 공유를 하지만 교육 목표를 가진 하나의 독립단위로 생성이 되어 시스템 상에서 실행시킬 수 있는 패키지로 만들어지면 콘텐츠에서 사용하는 파일은 물리적으로 다 포함되어 있다. 그렇기 때문에 같은 파일로 여러 개의 콘텐츠가 만들어지면 각 콘텐츠 패키지마다 파일이 포함되어 있기 때문에 시스템은 같은 파일을 중복으로 가지게 된다. 그래서 본 논문에서는 콘텐츠에서 사용하는 이미지를 공유할 수 있는 이미지 웹서버를 구현한다. 구현한 웹 서버는 이미지 저장과 메타데이터 생성, 이미지 검색, 이미지 프로세스의 기능을 가진다.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.83-88
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• 2006

우리가 사용하는 이미지뷰어프로그램은 정보전달에만 치중되어 있고 감성적인 부분이 차지하는 바가 적다. 또한 사람들에게 디지털카메라로 찍은 사진들을 보는 것은 많은 과정을 필요로 하고 큰 노력을 요한다. 게다가 다른 사용자들과 즉각적으로 공유하기도 힘들다. 이 같은 문제점들을 해결하는 새로운 이미지뷰어인터페이스를 제안해본다. 기존의 이미지뷰어프로그램들을 분석하고 그에 대한 결과와 문제점을 찾은 후 새로운 디자인 키워드를 제시하였다. 단순함(Simplicity), 즉각성(Instancy), 공유(Sharing), 감성(Sensitivity) 이렇게 네 가지 키워드이다. 사진(Picture)은 이미 지나간 과거이다. 이러한 사진의 시간개념을 Timeline 에 적용하고, 이를 원(Circle)이라는 모양으로 나타내어 사진을 볼 수 있게 하였다. 원이라는 새로운 형태의 인터페이스는 사진을 보다 쉽고 즉각적으로 공유할 수 있다. 데모버젼으로서 매크로미디어 플래시 액션스크립트로 프로그램을 하고 파워메이트(Powermate)를 장치(Device)로 사용하여 시연하였다. 이 인터페이스는 사람들이 쉽게 접할 수 있는 장소면 아무 곳이나 설치가 가능하다. 카페나 회의장소에서 가장 적합하게 어울릴 것이다. 사용자는 다른 이들과 함께 즉각적으로 간단한 방법으로 함께 감성을 나눌 수 있다. 새로운 인터페이스디자인이 사람들에게 쉽게 인지되어, 보다 편리하게 이미지를 확인할 수 있는 가능성을 제시한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.11
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• pp.5592-5609
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• 2017

JPEG steganography detection is an active research topic in the field of information hiding due to the wide use of JPEG image in social network, image-sharing websites, and Internet communication, etc. In this paper, a new steganalysis method for content-adaptive JPEG steganography is proposed by integrating the evolutionary feature selection and classifier ensemble selection. First, the whole framework of the proposed steganalysis method is presented and then the characteristic of the proposed method is analyzed. Second, the feature selection method based on genetic algorithm is given and the implement process is described in detail. Third, the method of classifier ensemble selection is proposed based on Pareto evolutionary optimization. The experimental results indicate the proposed steganalysis method can achieve a competitive detection performance by compared with the state-of-the-art steganalysis methods when used for the detection of the latest content-adaptive JPEG steganography algorithms.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.403-406
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• 2007

A New S-PVA which is named as charge-shared super PVA (CS S-PVA) LCD mode is proposed. CS SPVA controls the voltage ratio of low pixel by sharing system between low pixel and control cap, resulting in improved off-axis image quality and transmittance increase without any side effects. Moreover, the new S-PVA LCD mode is free of image-sticking. Operating schemes and display performance of CS S-PVA are presented.

• Journal of Korea Multimedia Society
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• v.12 no.7
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• pp.1032-1042
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• 2009

This research is for early extraction and utilization of semantic information from the tags in tagged Web image retrieval. Generally, users attach a tag to a Web image with little thought of the order, up to over 100 ones. In this paper, we suggest a method of selecting prior tags based on their importance when tagged images are uploaded, and using them in image retrieval. Ideas came from the recognition of the important tags which give a better description of the image as the tags sharing more semantic information with other tags of the same image. This method includes calculation of relation scores between tags based on WordNet and multilevel search of tagged images with the scores. For evaluation, we compared the suggested method and other retrieval methods searching images with simple matching of tags to a given keyword. As the results, we found the superiority of our method in precision and recall rate.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.129-136
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• 2001

Advances in new information technology enable practitioners at construction sites to capture image information on overall sites and various work results through digital cameras. Also more and more government agencies and clients are accepting construction site information in a digital format. This research developed an Internet-based construction image information management system for effective construction management and sharing information among project participants. This system named CiMS provides a way to store/search/share site image information by representing the information through the combination of work items, work areas, performing companies, captured dates and purposes. CiMS has been applied in a real construction project for system refinement and verification. It is expected that CiMS can improve the construction site photo management paradigm, and the contents of CiMS can be incorporated into the corporate knowledge database.