• Journal of the Korean Dietetic Association
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• v.15 no.3
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• pp.278-285
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• 2009

The purpose of this pilot study was to examine the feasibility of using digital pictures to assess individuals' nutrient intakes from school lunch. The subjects for the study were 29 male students and 40 female students from two classes in a middle school located in Daejeon Metropolitan City, Korea. The school lunch service was self-operated and the students were allowed to portion the foods by themselves. The teacher in charge of each class took digital pictures of every student's lunch plate that was tagged with an i.d. number, before and after eating for two consecutive days. The researchers estimated the amount of food, which an individual actually consumed by comparing pre- and post-pictures of their plate with reference food pictures for better visual estimation of the food amounts. Individual energy and nutrient intakes were calculated using CAN-Pro (ver 3.0) using the food intake data visually estimated from the digital pictures and school lunch recipes. The teachers in charge reported that about 10~15 additional minutes were needed to take the pictures used for the study and this additional time did not place much burden on the service process during the lunch period. The results showed that the students' actual energy and nutrient intakes from the same school lunch menus were quite varied as the serving portions were not regulated and left-overs were not prohibited. This pilot study suggests that examination of individual nutrient intake using digital picture is a feasible method in the context of school lunch service.

• Journal of Families and Better Life
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• v.25 no.2 s.86
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• pp.71-87
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• 2007

It is necessary to understand a self-expression and communication in cyberspace using digital photography We have studied the digital camera consumer's self-expression and communication skills and strategy through ethnographic interviews. In this study, we have used ethnographic interviews of 7 informants who had personal web site and are using digital cameras. As a result, It has turned out that informants expressed their self taking pictures of their daily life, friends, and family. Also they imply meaning and feeling in the pictures that had been taken to express their lives. The communication in cyberspace has turned out that informants communicate with other people with digital pictures to show their life. They communicated each other and give information. It means that they made information by themselves to give and share with other people as prosumer. Digital photography to express themselves and communicate in cyberspace enhanced human relationship that had made in cyber space. And it helps to form their self identity. They express their cyber identity with digital photography and it is similar to their self identity that expresses in real life.

• Journal of Korea Multimedia Society
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• v.12 no.10
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• pp.1450-1456
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• 2009

By the explosive growth of IT technologies, mobile phones have embedded a lot of functions and everyone can use them with facility. But there are various cybercrimes as invasions of one's privacy or thefts of company's sensitive information using a built-in digital camera function in a mobile phone. In this paper, we propose a scheme for analyzing evidences by digital pictures on mobile phones. Therefore we analyze the features of digital pictures on mobile phones and make databases of characteristic patterns based on the vendor and the model of mobile phone. The proposed scheme will help to acquire digital evidences by providing a better decision of the vendor and/or the model of mobile phone by cybercrime suspects.

• The Journal of the Korea Contents Association
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• v.12 no.4
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• pp.156-163
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• 2012

In 2011, in the Olympus advertisement appeared a copy of 'Writing of Picture'. Usually, the verb of 'Shoot' is commonly attached behind the picture, but a new sentence was made connecting 'writing' into the picture in the advertisement. With entrance of the digital era, the digital devices became popular, and the behaviors people post messages and pictures together on the internet site also became popular. Whether we first take a picture and then make a writing later, or whether we first make a writing and then take a picture later, the meaning of 'writing' and 'shooting' is actually alike in the digital era. People now use various images and writings, at the same time, of the pictures in expressing their own selves positively. This soon means not only that the pictures are helpful for writings, but also that the delivery of the meaning is not carried out only by characters. To the digital natives who have grown within many images, this atmosphere is a natural thing. In the field of Korean language education, the study of making use of the pictures and media for writings is in progress.

• The Research Journal of the Costume Culture
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• v.15 no.3 s.68
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• pp.383-393
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• 2007

The purpose of this study is to examine the expressional characteristics of T-shirts design using digital printing. Through digital printing system, a variety of patterns and pictures can be printed on T-shirts in a relatively short time. At this backdrop, the result of this research can aid to develop design of T-shirts with a high value added on it. The result was that the printing methods were categorized into borrowing the pictures of masterpieces, applying photography or caricatures, introducing graffiti or lettering, and representing industrial arts. In conclusion, digital printing system unlike the established printing method can have almost an unlimited range of expressing various kinds of pictures and patterns, so that designers may develop high value-added differentiated T-shirts. In other words, by creating a variety of designs with no limit of its quantity, its expressive range can be more widened and with an increased development of plotting machines, we may manufacture more varied kinds of products in a small quantity at a faster rate.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.281-288
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• 2018

Cigarette warning pictures are one of the most effective smoking cessation policies, and this is an effective way to promote smoking cessation by conveying the risk of smoking through pictures. However, the recent advertisement of new cigarettes in retail stores has potentially increased tobacco purchase intention by weakening the effect of the warning picture. Therefore, this study examined the problems of the new cigarette advertisement method by analyzing the effect of this method on cigarette warning pictures. For this purpose, 275 men and women were surveyed nationwide, and this study compared the cognitive and emotional effects, and purchase intentions of the new cigarette advertisements with existing advertisement methods through MANCOVA. The results show that the new cigarette advertising method affects the emotions, cognitions, and purchase intentions related to the cigarette warning pictures and have adverse effects on the original purpose of the cigarette warning pictures. This implies that regulatory standards and institutional arrangements are necessary for effective new cigarette advertising.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.7
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• pp.801-806
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• 2015

Recently, retro music is popular in the domestic music industry. Even in the movie industry, remake or retro movies are made continuously. In this paper, we consider the reason of remake in the viewpoint of mathematics and show that there is a maximum number of lyrics, pictures, music, and movies that human can make due to the characteristics of digital contents. The time that human cannot make new lyrics, new pictures, new music, and new movies any more will be estimated. Therefore, artists will have difficulties to make new contents in the future, and human have to listen and see the previous lyrics, movies, music, or pictures in the future. This study will give a deep philosophical insight for contents industry.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.20 no.3
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• pp.308-315
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• 2010

This study introduces a new technique to estimate modal parameters of a vibrating string using motion pictures. The approach requires two motion pictures for a vibrating string captured simultaneously by typical potable digital cameras or camcorders. Applying the space intersection theory and the space resection theory in photogrammetry, the steroscopic images for the string are constructed from two flat plane pictures. Then the three dimensional displacement components of the string are extracted by a multiple template matching technique. Finally the modal parameters of the string are estimated from the resulting displacement time histories. The accuracy of the approach has been examined through a small-scale mock-up of a string.

• Journal of Broadcast Engineering
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• v.12 no.4
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• pp.350-359
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• 2007

In this paper we present a simple, efficient method for detection of sharp digital images. Recently many digital cameras are equipped with various autofocusing functions to help users take well-focused pictures as easily as possible. However, acquired digital pictures can be further degraded by motion, limited contrast, and inappropriate amount of exposure, to name a few. In order to decide whether to process the image or not, or whether to delete it or not, reliable measure of image quality to detect sharp images from blurry ones is needed. This paper presents a blurriness/sharpness measure, and demonstrates its feasibility using extensive experiments. This method is fast and easy to implement, and accurate. Regardless of the detection accuracy, existing measures are computation-intensive. However, the proposed measure in this paper is not demanding in computation time. Needless to say, this measure can be used for various imaging applications including autofocusing and astigmatism correction.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.147-151
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• 2008

Since the first HDV(High Definition Video) camcoder, HDR-FX1 with 1080i resolution, had been launched at 2004, the image capture and record with HD resolution have been possible by the various types of camcoder and recorder which can support the HDV format. At a present day, a non-linear editing system, which is composed of only one computer, can capture, edit and export the image with HDV format. The HDV format has the same class of resolution with HD and the same data transfer bit rate of DV(Digital Video). Additionally, the image with HDV format can be recorded in 6mm DV cassette tape. It is possible because the HDV format uses the concept of Long GOP(Gorup of pictures) method for its compression. In this paper, the characteristic feature of HDV format, the essential factors in editing with HDV format and the concept of Long GOP method for its compression have been studied for the way of effective HDV editing.