• 한국컴퓨터정보학회논문지
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• 제15권9호
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• pp.25-33
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• 2010

본 논문에서는 영상처리에서 많이 사용하는 양방향 필터링(bilateral filtering)과 평균 이동 분할(mean shift segmentation)을 이용하여 일반적인 사진을 수채화 효과가 나도록 하는 리터칭 기법에 대하여 제안한다. 먼저 양방향 필터링을 이용하여 사진의 외곽선 부분은 보존하면서 고주파 성분을 약화시키도록 한다. 그리고 양방향 필터링된 영상에서 각각 DoG(Difference of Gradient) 에지 추출과 평균 이동 분할을 수행한다. 이때 DoG 에지 추출은 원영상의 RGB 색상 공간을 CIELAB 공간으로 변환 후 휘도(luminance) 성분만 이용하여 추출하도록 하며 두 결과를 결합하여 최종 영상을 생성한다. 본 논문에서 제안하는 기법으로 다양한 사진에 대하여 실험한 결과 수채화 효과가 잘 나타나는 것을 확인하였으며 특히 주광에서 촬영한 풍경 사진들에 대하여 보다 우수한 성능을 보임을 확인하였다.

• 전기학회논문지
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• 제67권4호
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• pp.586-594
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• 2018

In this paper, we propose a livestock theft detection system through moving object classification and tracking method. To do this, first, we extract moving objects using GMM(Gaussian Mixture Model) and RGB background modeling method. Second, it utilizes a morphology technique to remove shadows and noise, and recognizes moving objects through labeling. Third, the recognized moving objects are classified into human and livestock using skeletal features and color similarity judgment. Fourth, for the classified moving objects, CAM (Continuously Adaptive Meanshift) Shift and Kalman Filter are used to perform tracking and overlapping judgment, and risk is judged to generate a notification. Finally, several experiments demonstrate the feasibility and applicability of the proposed method.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.813-814
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• 2008

In this paper, we propose a new tracking algorithm which uses weighted sum of color bin's centroids to find the main centroid of the target. The weights are determined by the proportion of colors of the target and by the colors of background. That is, A color which has high occupation in forming the target is highly weighted and a color which has low occupation is lowly weighted. Moreover, the proposed algorithm prevent track failure by lowering the weight of the colors which forms the background. Therefore, the proposed algorithm performs stable tracking inspite of occlusion and existence of confusing backgrounds.

• International Journal of Costume and Fashion
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• 제14권2호
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• pp.81-96
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• 2014

The meanings of colors vary with time and space. For the most important events in a person's life, such as wedding or funeral, people use color to symbolize their identities or roles. Traditionally, the colors of dress had indicated the wearer's age, class, or marital status in Korea. However, Korea's exposure to western cultures has affected in many dimensions of its modern history. Especially, influenced by social change, the traditional dress has undergone many modifications in forms, silhouettes, materials, and color. However, women's mourning dress has been maintained as a long lasting tradition and the use of white in mourning dress has been regarded as a norm until recently, while men have worn a regular black suit with a black tie. But, the shift from white to black in mourning dress has been observed in recent mourning practices. To examine this change of color in Korean traditional mourning dress, a historical approach utilizing multiple resources, such as interview, observations of events, documents, and archival records was applied.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.457-460
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• 2009

The thermo-optical characteristics of new generation fully reversible diacetylene vesicles, DCDDA-mono-mBzA and DCDDA-bis-mCPE, and their solid film composites are utilized as thermochromic display materials. Conspicuous color intensity of their solid films and blue-to-red color shift with non-fluorescent to fluorescent switching at $100^{\circ}C$ make them promising materials for dual color thermally actuated display devices of the near future.

• 산업기술연구
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• 제31권A호
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• pp.95-101
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• 2011

According to recent technological developments in high-power LEDs, the stage lighting is one of most important areas to apply power LED system. Moving light for color rendering of stage uses the RGBW(red, green, blue, white) color mixing method. LED moving light system needs to have a wide range of dimming control as enough to operate at very low power. Also LED dimming system should not be induced color-shift and flicker in camera. This paper is experimentally verified the LED Moving Light driving circuit of 200Watt level designed to satisfy the above characteristics which applied the DC current-controlled and PWM mixed dimming method.

• 한국실내디자인학회논문집
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• 제18권4호
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• pp.61-70
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• 2009

Rapid social changes and scientific advances of the $21^{th}c$ have brought on a major paradigm shift towards consilience, making boundaries more or less irrelevant. In the field of architecture, this is manifested in the emergence of colors that can be described as 'being aleatory', 'non-formal', 'non-deterministic' and 'perpetually evolving'. Contemporary architectural colors are not definitively fixed. They are rather liquid and metaphorical. Whereas the more traditional architectural colors have delivered clearly and precisely the intended symbolic meaning and visual information, those of today are less definitive and embody a more liquid and conceptual value system. This paper discusses the denoted signification and the meaning effect of the metaphorical color system found in contemporary architecture. This paper analyzes works of architecture from the late 20th century, when dramatic change sin architectural color system surfaced, to the more contemporary creations. Here, three categories of color are suggested, namely material color, spatial color and liquid color. Each categories considered in connection with deconstruction, holistic interactivity and the multiplicity of meanings that may result as information from the external world is perceived as stimulus to the inner mind. Contemporary architectural color scheme is characterized by its unpredictable vagueness of meaning, synesthetic engagement of imagination and chance, and expansion of the inner and outer world, all of which contribute to a metaphorical effect. The metaphorical color system of contemporary architecture can be classified into three dimensions, and it connects with human consciousness and amplifies itself through flexible and fluid communication. In this process non-physical colors materially serve as formal logic and room for varied interpretation of architectural space and our conceptual framework.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.1656-1659
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• 2008

The reflective type color filter for the liquid crystal displays (LCD) was produced using cholesteric liquid crystal monomers whose phase is characterized by the unique optical features of selective reflection. Periodic micrometer scale hemi-spherical photoresist (PR) patterns were formed on glass substrates by thermal reflow method after photolithography. Cholesteric color filter films for red, green and blue light reflections were then produced and the viewing angle dependence was investigated and compared with that of reflected light on the non-patterned substrates.

• 한국정보전자통신기술학회논문지
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• 제8권4호
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• pp.270-274
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• 2015

본 논문에서는 HSV 색 공간을 이용한 야간 차량의 검출 시스템을 제안한다. 주정차 감시등 도로변에서 자동차를 감시하는 경우 자동차 번호판 추출하는 것이 중요하다. 일반적으로 번호판 추출을 위해서는 원거리에서 자동차 검출후 Pan-Tilt-Zoom 카메라로 자동차를 일정한 크기로 확대한 영상을 획득하여 번호판을 추출한다. 그리고 자동차 검출 및 추적을 위해 Mean-Shift 혹은 Optical Flow 알고리듬이 많이 이용되고 있다. 그러나 이러한 알고리즘은 주간에는 성공적으로 자동차를 검출 및 추적 할수 있었으나 야간에는 검출 및 추적에 어려움이 있었다. 그래서 본 논문에서는 입력 영상을 HSV 색 공간으로 변환하면 자동차의 전조등 혹은 후미등의 위치가 두드러지게 나타나는 것을 이용하여 자동차의 위치를 검출하였다. 실험 결과 정면 차량의 경우 93.9%, 후면 차량의 경우 97.7%의 차량을 검출하여 제안된 방법이 야간 차량 검출에 효율적임을 증명하였다.

• 한국항공우주학회지
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• 제44권9호
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• pp.769-774
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• 2016

장기간 태양광 복사환경에 노출되는 폴리머는 성능의 신뢰성을 확보하기 위해 장기간 환경시험을 필요로 한다. 본 논문에서는 MIL-STD-810을 따라 설계된 태양광 복사 시험기를 이용하여, 7, 14, 28, 56, 그리고 84 주기 동안 태양광 노화 시험을 하였다. 노화 시험 후에 RGB 값을 측정하고 CIE 1976 색공간을 이용하여, 각각의 RGB 감소율과 총 색 변화량을 계산하였다. 또한 만능재료시험기를 이용하여, ASTM-D638 시험 규격을 따라, 기계적 물성이 측정되었다. 결과적으로 태양광 노화 주기가 길어질수록, 총 색 변화량이 증가하였으며, 인장 강도, 연신율이 감소하였으나 탄성계수와 포아송 비는 변화가 적었다.