• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.111-121
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• 2021

As the main carrier of information, digital image is becoming more and more important. However, with the popularity of image acquisition equipment and the rapid development of image editing software, in recent years, digital image counterfeiting incidents have emerged one after another, which not only reduces the credibility of images, but also brings great negative impacts to society and individuals. Image copy-paste tampering is one of the most common types of image tampering, which is easy to operate and effective, and is often used to change the semantic information of digital images. In this paper, a method to protect the authenticity and integrity of image content by studying the tamper detection method of image copy and paste was proposed. In view of the excellent learning and analysis ability of deep learning, two tamper detection methods based on deep learning were proposed, which use the traces left by image processing operations to distinguish the tampered area from the original area in the image. A series of experimental results verified the rationality of the theoretical basis, the accuracy of tampering detection, location and classification.

• Archives of design research
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• v.18 no.1 s.59
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• pp.27-38
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• 2005

The purpose of this study is to find the unique image characteristics of Korea and identify the Korea culture by comparing the image characteristics of traditional palaces of Korea, China and Japan. This study identifies the unique image characteristics of Korea through a comparative analysis the image of three nations. Literature research, free association measurement, survey were conducted to select study objects and descriptive words. 5 outside-pictures and 2 inside-pictures of the Changduckung, the Forbidden City, the Nijo castle representing each country's traditional palaces were chosen as study objects. A questionnaire was made with 47 descriptive words and 5-scale measurement. The results of analysis are as follows. The representative words to express the image characteristics of Korea, China and Japan traditional palaces are adornment, stability, openness, lines, unfamiliarity, feminine. This study researched the common and different factors between the image characteristics in traditional palaces of Korea, China and Japan. The common image is the image of lines. The distinctive characteristics of Korea are stability, curved lines and femininity. The characteristics of China are adornment and straight lines. And, the characteristics of Japan are simplicity, unfamiliarity, and openness. Based on the research, it was found out that stability and curved lines are the main characteristics of Korea. This study researches the characteristics of images of Korea, China and Japan. This study shows the common and different factors of image characteristics of in the neighboring three nations of East Asia. Due to the geographical and cultural effect over a long time, the Korea was evaluated as the middle cultural between China and Japan. However, this study found unique characteristics of Korea's image.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.323-324
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• 2022

This paper explains the comparison results of surface current measurement using X-band Radar image through analysis. Measurements were carried out from February 2022 using the X-band Radar for marin ships installed at Sokcho Beach. Based on the Korea Hydrographic and Oceanographic Agency ocean observation buoys, the accuracy of surface current(current speed) measurement was verified through comparison and analysis of measurement data.

• Annual Conference of KIPS
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• 2024.05a
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• pp.450-452
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• 2024

본 논문에서는 다양한 합병증의 원인인 형태 이상 적혈구로 인한 질환 진단의 정확도 및 오진율 감소를 위해 말초 혈액 도말 검사를 통한 혈액의 병리학적 이미지를 토대로 형태 이상 적혈구를 검출 및 계수하는 시스템을 구현하였다. 본 시스템은 혈액 분석 검사에 주로 사용되는 자동 혈구 분석기의 비용 및 인력, 시간의 부담을 줄이고, 수기법의 검출 소요시간 및 검사자의 주관적 진단 등 문제점을 개선시켜 단시간 내에 대량 분석을 할 수 있는 객관적인 진단 기구로 활용되어 정밀 의료 분야에 큰 기여를 할 수 있을 것으로 기대한다.

• Journal of the Korean Society for Library and Information Science
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• v.51 no.4
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• pp.121-138
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• 2017

As information users seek multimedia with a wide variety of information needs, information environments for multimedia have been developed drastically. More specifically, as seeking multimedia with emotional access points has been popular, the needs for indexing in terms of abstract concepts including emotions have grown. This study aims to analyze the index terms extracted from Getty Image Bank. Five basic emotion terms, which are sadness, love, horror, happiness, anger, were used when collected the indexing terms. A total 22,675 index terms were used for this study. The data are three sets; entire emotion, positive emotion, and negative emotion. For these three data sets, co-word occurrence matrices were created and visualized in weighted network with PNNC clusters. The entire emotion network demonstrates three clusters and 20 sub-clusters. On the other hand, positive emotion network and negative emotion network show 10 clusters, respectively. The results point out three elements for next generation of multimedia retrieval: (1) the analysis on index terms for emotions shown in people on image, (2) the relationship between connotative term and denotative term and possibility for inferring connotative terms from denotative terms using the relationship, and (3) the significance of thesaurus on connotative term in order to expand related terms or synonyms for better access points.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.903-909
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• 2018

In this paper, performance analysis of machine vision techniques is presented to improve the convenience and speed of automatic inspection in the industrial field when machine vision is applied to the image not taken in the stationary state, but in the moving state on a conveyer. When the length of cylindrical rods used for automobiles was measured using the edge detection method, the conveying speed increased, and the uncertainty of the boundary between the background and the part image increased, which resulted in a shorter image of the object taken. This paper proposes a linear compensation method to predict the biased errors of the length measurements after examining the pattern of biased and random errors, respectively, with 6 different types of specimens and 7 velocity stages. The length measurement corrected by the linear compensation method had the same accuracy as the stationary state within the speed range of 30 cm/s and could enhance the application capability in automatic inspections.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.163.2-163.2
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• 2016

타이타늄과 탄소의 비율이 서로 다른 조건에서, 탄소가 도입된 산화타이타늄 (TiO2)을 수열합성법을 이용하여 합성하였다. TEM 이미지를 통하여 일정한 형태의 산화타이타늄이 합성된 것과, XRD 패턴 분석을 통하여 Anatase 형태임을 확인하였다. 본 연구에서는 탄소가 도입된 산화타이타늄을 이종상촉매로 사용하여 일차 및 이차 알코올 산화반응과 메틸렌 블루 분해 실험에 응용하였다.

• Culinary science and hospitality research
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• v.17 no.2
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• pp.153-167
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• 2011

This study intends to make an empirical analysis of menu quality and brand image factor that influence customer satisfaction and repurchase intention in family restaurants. For this study, a survey was conducted targeting family restaurant customers in Seoul and Gyeonggi area from October 2nd, 2010 to October 17th, 2010 using a self-administered questionnaire filled out directly by respondents. A total of 264 copies was used for the analysis. The results were summarized as follows. First, menu quality had a significant effect on brand image while menu quality and brand image on customer satisfaction. Also, customer satisfaction had a significant effect on repurchase intention.

• Journal of Korea Society of Industrial Information Systems
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• v.13 no.3
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• pp.54-62
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• 2008

For a message hiding technique to be effectual, it needs to have availability, confidentiality and integrity. Steganography is the science of hiding one message within other types of digital contents. In this case, attempt to defeat steganalysis by restoring the statistics of the composite image to resemble that of the cover, these discrepancies expose the fact that hidden communication is happening. In this paper, I present a steganography scheme capable of concealing a piece of secrete information in a host image and base on the technique's OCT, RGB, statistical restoration.

• Composites Research
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• v.32 no.5
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• pp.199-205
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• 2019

The composite material has the advantage that the fibers can be arranged in a desired direction and can be manufactured in one piece. However, micro voids can be formed due to micro air, moisture or improper curing temperature or pressure, which may cause the deterioration in mechanical strength. In this paper, the composite panels with different thicknesses were made by varying the curing pressure in an autoclave vacuum bag process and their microporosities were evaluated. Microporosity was measured by image analysis method, acid digestion method, and combustion method and their correlation with ultrasonic attenuation coefficient was analyzed. From the test results, it was found that the acid digestion method had the highest accuracy and the lower the curing pressure, the higher the microporosity and the ultrasonic attenuation coefficient. In addition, the microporosity and the ultrasonic attenuation coefficient were increased as the thickness of the composite panel was increased at the same curing pressure.