• The Journal of the Korea Contents Association
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• 제22권9호
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• pp.76-84
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• 2022

In this paper, in order to compose the visual perception cognitive function training content that can be linked with the IPUZZLE image block, an interactive content device that utilizes photos and videos of smartphones. Four areas of visual memory, visual continuity, spatial relationship, and visual discrimination were derived and the content operation, application method, and scenario were written. It was intended to continuously give and induce children's desire to participate in training by designing the content image and developing the existing learning terrain visual and perceptual cognitive function training materials in the form of mobile mini-games. Experiential activities were conducted for general children and their guardians using the developed contents, and the results were found to be significant in terms of concentration, effect, and effect compared to basic puzzle toys. It is expected that this thesis will be a meaningful data for the study of cognitive function improvement activities based on digital toys and contents.

• The Journal of the Korea Contents Association
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• 제11권12호
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• pp.552-559
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• 2011

In this paper, a new image watermarking algorithm is proposed which can hide specific information of an ID card's owner in photo image for preventing ID's photo forgery. Proposed algorithm uses the image segmentation and the correlation peak position modulation of spread spectrum. The watermark embedded in photo ensures not only robustness against printing and scanning but also sufficient information capacity hiding unique number such as social security numbers in small-sized photo. Another advantage of proposed method is extracting accurate information with error tolerance within some rotation range by using $2^h{\times}2^w$ unit sample space not instead $1{\times}1$ pixels for insertion and extraction of information. 40 bits information can be embedded and extracted at $256{\times}256$ sized ID photo with BER value of 0 % when the test condition is 300dpi scanner and photo printer with 22 photos. In conclusion, proposed algorithm shows the robustness for noise and rotational errors occured during printing and scanning.

• The Journal of the Korea Contents Association
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• 제6권8호
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• pp.175-183
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• 2006

In computer graphics, according as the rapid development of hardware can realize high-resolution image on the monitor, the more natural and accurate rendering skill is needed gradually, and the studies about high-level rendering algorithm are processing. There are two types in rendering skill. The one is photo-realistic rendering to realize accurate image like photos and the other is real-time rendering to realize rapid real-time render. This paper includes caustics expression about lights and materials of several photo-realistic rendering skills. First this paper analyzes how caustics is used and expressed in movies, and further realizes caustics effect using real renderer. This paper examines objective criterion and capability of plug-in through the objective experiment of renderer. Also this paper analyzes using environment on variables for caustics effect realization. The experimental results can be applied to many rendering works as useful data, and can be used as data to understand characteristic and capability.

• The Journal of the Korea Contents Association
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• 제15권1호
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• pp.74-85
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• 2015

This study on the proofing what used to correct the color difference between the photo image and offset press. Printing photos with color offset press always make the differs, because of the difference in gamut. Photographer hopes to be able to use the proofing with inkjet printer for reduce these differences. In this study, I experiment with various ways for the proofing by photographer directly. It is using the ink jet printer and image outputs of the various mode was applied to a variety of color setting value. And calculate the output image using a spectrophotometer and compared with the image of offset press. At last I can found a very similar color setting value with the offset image. After all this research is to obtain a result of finding out proofing work flow through method to measure and how to apply various color setting value results.

• Journal of Digital Convergence
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• 제13권3호
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• pp.209-214
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• 2015

Social network services such as Facebook and Flickr is a very useful service that was the foundation of the Internet. If a state in which the Internet is connected, music, photos, and us to be able to share it freely post such as documents. However, even when the digital information posted in such social network services the user has died, and have been published, it is also used for people who do not intend the bad purposes some problems can occur. Facebook is trying to apply the findings Jed R. Brubaker of UC Irvine University in order to solve this problem. However, in Korea, such efforts, not much appears for now. Therefore, we proposed a method that can be managed by delegated Facebook, safely a Delegator digital information posted on social networking services such as Flickr. Our proposed system, as compared with Jed R. Brubaker and Jeong-Kyung Moon is executed previous studies, we studied a method proposed by the appropriate compensates points shortage is passed through the future research. And I consider to have been proposed a method to safely use posted digital assets in a social network service.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제17권11호
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• pp.403-409
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• 2016

Recently, harmful content (such as images and photos of nudes) has been widely distributed. Therefore, there have been various studies to detect and filter out such harmful image content. In this paper, we propose a new method using Haar-like features and an AdaBoost algorithm for robustly extracting navel areas in a color image. The suggested algorithm first detects the human nipples through color information, and obtains candidate navel areas with positional information from the extracted nipple areas. The method then selects real navel regions based on filtering using Haar-like features and an AdaBoost algorithm. Experimental results show that the suggested algorithm detects navel areas in color images 1.6 percent more robustly than an existing method. We expect that the suggested navel detection algorithm will be usefully utilized in many application areas related to 2D or 3D harmful content detection and filtering.

• Proceedings of the Korea Contents Association Conference
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• 한국콘텐츠학회 2006년도 추계 종합학술대회 논문집
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• pp.417-420
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• 2006

Recently we could generation of 3-D simulation image by use of various image contents, so I tried advanced methods very easily leads to the location on the GIS environments. Its used basically air photos and satellite sensor images for them. For the generate 3-D spatial be suitable to matching map coordinates using elevation data from digital topographic files, and matching to 3D spatial image contents through perspectives view condition composed to move according to fixed roads until arrive to location. Through this new system which tourists are able to simulate the interest paths or locations and to visit the cultural inheritance was proposed by combining various spatial data with the multimedia contents. This system provides people with guidance to locate the cultural assets in the Web environments. The developed system which is more convenient to provide tourists with the information and they are able to access automatically to location easily. In the future, the visitors are able to use easily the 3d image contents on the Internet or from the public tour information desk by using the simulation images.

• Journal of Korean Society for Geospatial Information Science
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• 제12권2호
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• pp.43-52
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• 2004

This study presents the application of aerial photographs and the Korea Multi-Purpose Satellite, KOMPSAT-1 Electro-Optical Camera(EOC) imagery in detecting change in an urban area that has been rapidly growing. For the study, we used multi-temporal images which were acquired by two different sensors. Image registration and resampling were rallied out before performing change detection in a common reference system with the same spatial resolution. for all of the images. Results from image differencing and image ratioing techniques show that panchromatic aerial photographs and KOMPSAT-1 EOC images collected by different sensors have potential to detect changes of urban features such as building, road and other man-made structure. And the optimal threshold values were suggested in applying image differencing and image ratioing techniques for change detection.

• The Journal of the Korea Contents Association
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• 제17권11호
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• pp.252-263
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• 2017

The study empirically explored factors influencing photo sharing behavior on Instagram based on the uses and gratification theory. An online survey was conducted 356 respondents those who have used Instagram and have shared photos within the last three months. Frequency analysis, descriptive statistics, confirmatory factor analysis, and structural model analysis were conducted using SPSS 19.0 and AMOS 21.0. The results of this study are as follows: first, communication has the greatest effect on photo-sharing behavior; second, entertainment has a positive effect on photo-sharing behavior; third, self-expression has a positive effect on photo-sharing behavior; fourth, service users' trust has a positive effect on photo-sharing behavior. This study adds to the current literature and contributes to understanding consumers' photo-sharing behavior.

• Journal of the Korean Society of Costume
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• 제59권9호
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• pp.97-114
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• 2009

The purpose of this thesis is to contribute to the fashion industry of Korea and China by providing the basic informations of Korean fashion company planning to launch into the Chinese fashion market, and also presenting the Korean fashion style to the China, by the way of searching the sameness and differences of the casual style. The direct picturing method and comparative analysis were applied for the methods of study. The whole body pictures were taken from the major fashion streets of Seoul and Shanghai, then clear 250 photos were selected in each city. The period for two weeks from 1st, July to 14th, July 2008, and from 10AM until 5PM. The results of study are as follows. The sequential order of frequency is easy casual, jean casual, romantic casual and character casual in Seoul and Shanshai. In case of easy casual, there were many similarities of the preferences in the items, colors and coordinations, while showing the differences in the styling of the clothing. Taking the jean casual, there were no specific differences in items between two cities except the styling of clothing in which the tidy style were more prevalent in Seoul, while the sexy style were more predominant in Shanghai. The main item of romantic style was the one-piece dresses. This was preferred in the style of A-line or H-line with short length, in Seoul while X-silhouette showing the body line with knee-length skirts were more popular in Shanghai. Finally the frequency of character casual is below 5% in both cities. In the items, the skirts were more preferred as a bottom in Seoul in contrast with the pants being more prevalent in Shanghai, the sleeveless top popular in both cities. The modest style were noted in Seoul, the sexy style were more prevalent in Shanghai. However many similarities between two cities were found in the speed of acceptabilities of fashion.