• The Bulletin of The Korean Astronomical Society
• /
• v.39 no.2
• /
• pp.51.2-51.2
• /
• 2014

Ultra faint dwarf galaxies (UFDs) are larger but fainter than globular clusters, being the faintest galaxies in the universe. They have been found only in the Local Group. We report the discovery of an UFD in the intracluster field of the Virgo cluster (Virgo UFD1). It is located near the core of Virgo cluster, and far from any massive galaxies. The color magnitude diagram of resolved stars in Virgo UFD1 shows narrow, metal poor red giant branch (RGB), which is very similar to the UFDs in the Local Group. by comparing RGB in this galaxy with 12 Gyr stellar isochrones, we estimate its distance, $d=16.4{\pm}0.4$ Mpc and mean metallicity, $[Fe/H]=-2.4{\pm}0.4$. We derive its integrated photometric properties and structural parameters : V-band absolute magnitude of $MV=-6.3{\pm}0.2$, effective radius of $84{\pm}7pc$, and central surface brightness of ${\mu}V,0=26.49{\pm}0.09$ mag arcsec-2. These properties are similar to these of Local Group UFDs. Virgo UFD1 is the first UFD discovered beyond the Local Group. These results indicate that it may be a fossil remnant of the first galaxies.

• Korean Institute of Interior Design Journal
• /
• no.37
• /
• pp.95-102
• /
• 2003

It has been true that major investment among local business hotels were placed in furniture design character as there are increasing number of international events hosted by Korea. The study, under these circumstances, as a study In advance to see the design feature and trend of local business hotel's guest room furniture, has done interview with guest room manager, photographing of rooms, actual survey for analysing guest room plane surface, etc., researcher directly visiting 15 hotels that have special first grade businessmen only floor in Seoul. In addition, a survey has been done to know if each hotel room and furniture has particular image, from this survey the design feature of local business hotel's guest room has been analysed, and the result is as following. The result shows that similar pattern is applied in furniture placement of each guest room but for the furniture type and design concept, some try to re-design of wooden furniture available in Lee dynasty and others adopt European style like France and United Kingdom for the realization of semi-classic image. Typical material and color is red oak and maple.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.47 no.3
• /
• pp.1-10
• /
• 2010

In this paper, we propose a novel way of combining color demosaicing and the auto white balance (AWB) method, which are important parts of image processing. Performance of the AWB is generally affected by demosaicing results because most AWB algorithms are performed posterior to color demosaicing. In order to increase the performance and efficiency of the AWB algorithm, the color constancy problem is considered during the color demosaicing step. Initial estimates of the directional luminance and chrominance values are defined for estimating edge direction and calculating the AWB gain. We propose a modified edge-based AWB method that used a pre-defined achromatic region. The estimation of edge direction is performed region adaptively by using the local statistics of the initial estimates of the luminance and chrominance information. The proposed method shows significant improvements in terms of visual and numerical criteria when compared to conventional methods.

• Journal of the Institute of Electronics Engineers of Korea CI
• /
• v.43 no.6 s.312
• /
• pp.92-100
• /
• 2006

In imaging devices such as digital cameras using a single image sensor, captured images are the sub-sampled images comprised of the pixels that have only one of the three primary colors per a pixel. This images should be restored to the color images through an image processing referred as color interpolation. In this paper, we derive relation between the average of the data from CFA image sensor and the average of each color channel data. By using this relation, a new efficient method for color interpolation is proposed. Also, in order to reduce the zipper effect in a restored image, missing luminance values are interpolated along any edges in the captured image. On the other hand, for the chrominance channel interpolation, we average difference between a chrominance value and a luminance value in a local area, and this average value is added to the pixel value of the interpolated location. The proposed method has been compared with several previous methods, and our experimental results show the better results than the other methods.

• Journal of Environmental Health Sciences
• /
• v.41 no.2
• /
• pp.82-89
• /
• 2015

Objectives: This study was performed to investigate the effect of cooking time on the internal temperature and color of cutlets and the reduction of indicator organisms in cutlets by cooking. Methods: Three kinds of commercially packed frozen cutlets (pork, chicken and fish cutlets), were purchased from local markets. The cutlets were cooked in a frying pan at $180^{\circ}C$ for four minutes. Internal temperature was measured with a food thermometer. Color was measured using a Hunter spectrocolorimeter. Aerobic colony counts, coliforms, and Escherichia coli were determined according to the Food Code of Korea. Results: The internal cooked temperature of every cutlet reached over $74^{\circ}C$, the temperature considered safe, after three minutes, while external temperature reached this level in two minutes (p < 0.001). The instrumental color value as lightness (L) in the cooked cutlets significantly changed (p < 0.001) after one minute. The level of aerobic colony counts of fresh cutlets was under the specification and was reduced to one tenth its level in the cooked cutlets. Coliforms and E. coli were not detected in all samples. The internal temperature of the cutlets was significantly affected by cooking time and weight (p < 0.001). The interaction effect of time and weight was also significant (p < 0.001), and time was the more influential factor. Conclusion: The results of this study indicate that the sampled cutlets should be cooked for a minimum of three minutes or more in order to ensure food safety. The results also indicate that if consumers cease cooking based on external temperature or color, there will be a risk of inadequate cooking.

• Spatial Information Research
• /
• v.3 no.2
• /
• pp.179-189
• /
• 1995

To make vector data from a map which has no negative plates by using vectoring tool, it is necessary that we can extract objects to be vectorized from a scanned map. In this paper, we studied on extracting vectoring objects from scanned color maps. To do this, we classified vectoring objects into three types : line type, filled - area type and character/symbol type. To make the extraction method effective, we analyzed characteristics of vectoring objects and color distribution in scanned color maps. Then, we applied these characteristics to designing process of the extraction method. To extract the line type object, our line tracing method was designed by using the masks which considered connectivity and geometrical characteristics of lines. By using the local thresholding method and the similarity function for comparing the color distribution between two NxN blocks, we extracted character/symbol and the filled-area objects effectively. The method proposed in this paper can be used for constructing the small scale GIS application economically using existing color maps.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.47 no.1
• /
• pp.53-61
• /
• 2010

In this paper, we present a color interpolation algorithm that uses novel edge direction estimator and region classifier. The proposed edge direction estimator accurately determines the edge direction based on the correlation between the images obtained by the channel separated and down-sampled Bayer color filter array(CFA) pattern. The correlation is defined based on the similarity between the edge direction in the local region of the image and the shifting direction of the images. Also, the region of an image is defined as the flat, the edge, and the pattern-edge regions, where the edges are appeared repeatedly. When all the pixels in the image are classified into the three different regions, each pixel is interpolated horizontally or vertically according to the estimated direction. Experimental results show that the proposed algorithm outperforms the conventional edge-directed methods on objective and subjective criteria.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.34 no.12
• /
• pp.2006-2021
• /
• 2010

An authentic national spirit in media (particularly films), traditional images, and color preferences is expressed through movies that are melted in local traditions. This study suggests a direction regarding the characteristics for historical costumes by examining traditional color images and cultural preference in the Chinese film (1987), a representative film that deals with Chinese history and traditions. This movie can illustrate the correlation between the temporal backgrounds and the costumes in the movie with the criteria of Eastern color systems. The results of this research are summarized as follows. First, the image of Chinese traditional colors represented in many parts of and the cultural preferences that underlies their works through the expression of traditional colors. The scenes of traditional costumes and colors express the visual embodiments of the costumes that reflect a specific status, ceremony, or ritual. Second, the traditional colors used in the movie are based on the Yin-Yang theory. Particularly, Red, Yellow, Black is mostly used for ordinary clothing. Third, there are some differences in the use of color arrangements, that change regarding the use of traditional colors according to images and situations that follow the intention of the director. Planning the color arrangements is considered an engaging connectivity between traditions and images in the movie and it is extended or reduced based on cultural preferences. Fourth, the increase and decrease of color arrangements is distinctively represented as the story of the movie proceeds.

• The Journal of the Korea Contents Association
• /
• v.9 no.4
• /
• pp.198-206
• /
• 2009

Recently, there has been a trend designing a consistent and uniform regional identity in South Korean provinces as demonstrated by efforts in Chungcheongnam buk-Do. The motivating goals have been to establish an identity for local residents, provide voluntary services, achieve higher value-added business, introduce new management strategies, and establish a local brand through the exportation of local specialties. The by-products of these goals when accomplished include: maintaining a consistent policy, securing governmental economic efficiency of the province, characterizing local culture and improving quality of life. In this study, I tried to find out whether a local logo which is associated with a city plays a core role in the city's identity by comparing each symbol's shape, color and other components which are ways of expressing its meaning. In this respect, I analyzed the type of the Chungcheongnam buk-Do's symbol marks (30) and tried to suggest the desirable direction in developing symbol marks.

• Journal of Broadcast Engineering
• /
• v.7 no.2
• /
• pp.136-144
• /
• 2002

In this paper, a novel approach that makes use of both shape and color information to retrieve character images in terms of similarity distance from a large-capacity image database or from a streaming image database, in particular, character image logo or trademark. In order to combine both features of completely different characteristics bipartite matching has been employed in computing similarity distance, The proposed method turned out to bealso very effective in matching natural object or human-drawn images whose shape varies substantially.