• 패션비즈니스
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• 제7권6호
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• pp.57-66
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• 2003

With the occurrence of interest in image-presentation that helps express one's individuality in several place in our society, it has affected make-up field. Now, make-up is getting to be recognized as a key role player that reflects our social and cultural concerns not only by presenting a appropriate one that is proper when to use and what for, but also presenting individualistic images that are able to express one's attractiveness free from a last plain concept that meant merely applying cosmetics to one's face is makeup. Like above, the reason that a change for consciousness of the function of make-up was possible is a noticeable outcome that results from the difference before and after make-up. In other word, with the help of Corrective Make-up that makes use of optical illusion, the analytic research for features could have been carried out systematically, therefore, women get to present their beauty of innate facial shape and features at their pleasure. The basic principles of the Corrective Make-up, which was introduced to satisfy the purpose of the existing make-up take advantage of lines and colors that are part of the optical illusion. The nature of direction and movement was expressed by the direction and angle of lines and the colors are also able to induce the variation of images depend on the whole color around them or contrastive color around. This thesis is mainly about optical illusion through lines that are part of elements that induce the optical illusion and deals with phenomena that occur when we apply lines that are part of design into the make-up. And this is written for the purpose of establishing the last basis of make-up more scientifically and systematically through the research for the variation when we apply the nature of lines into our features and deriving facial image variation from it. This is also for study into the role of make-up as for psychological effect that is able to make facial images look different when the optical illusion with possible visual errors is applied into it. In conclusion, we can say "Make-up is optical illusion through visual elements such as lines, surfaces, books, touch and so on."

• Current Optics and Photonics
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• 제7권4호
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• pp.362-377
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• 2023

Optical information processing technology is characterized by high speed and parallelism, and the light features short wavelength and large information capacity; At the same time, it has various attributes including amplitude, phase, wavelength and polarization, and is a carrier of multi-dimensional information. Therefore, optical encryption is of great significance in the field of information security transmission, and is widely used in the field of image encryption. For multi-image encryption, this paper proposes a multi-image encryption algorithm based on a modified Gerchberg-Saxton algorithm (MGSA) in the Fresnel-transform domain and computational ghost imaging. First, MGSA is used to realize "one code, one key"; Second, phase function superposition and normalization are used to reduce the amount of ciphertext transmission; Finally, computational ghost imaging is used to improve the security of the whole encryption system. This method can encrypt multiple images simultaneously with high efficiency, simple calculation, safety and reliability, and less data transmission. The encryption effect of the method is evaluated by using correlation coefficient and structural similarity, and the effectiveness and security of the method are verified by simulation experiments.

• 한국통신학회논문지
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• 제39C권8호
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• pp.731-737
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• 2014

본 논문에서는 감시 카메라 환경에서 발생할 수 있는 군중의 비정상 행동 검출 방법을 제안한다. 군중들의 비정상 행동을 산발적으로 퍼지면서 뛰는 행동, 한쪽 방향으로 갑자기 뛰는 행동 두 가지로 정의하였다. 이를 검출하기 위하여 영상에서 움직임 벡터를 추출하여 군중의 비정상 행동 검출에 적합한 서술자 MHOF(Multi-scale Histogram of Optical Flow)와 DCHOF(Directional Change Histogram of Optical Flow)제안하였으며, 이를 이진 분류기인 SVM(Support Vector Machine)을 이용하여 검출하였다. 제안한 방법은 공개 데이터셋인 UMN 데이터와 PETS 2009 데이터를 이용하여 성능을 평가하였고 다른 방법론과의 비교를 통해 제안하는 알고리즘의 우수성을 입증하였다.

• 한국광학회지
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• 제35권1호
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• pp.18-23
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• 2024

미술관 등 전시 공간에서의 조명은 바닥보다는 주로 전시물이 붙어 있는 벽면에 비춰져야 한다. 일반적으로 사용되는 LED 조명은 LED에 확산판이 결합된 형태로서 각도별 배광 분포가 일정한 램버시안 광원에 가까우며, 수직 입사가 이뤄지는 바닥면에 조명이 집중된다. 따라서 이러한 일반적 형태의 조명 방법은 벽면을 조명하기에는 적합하지 않으며, 벽면에 조명을 집중시키기 위해서는 각도별 배광 분포 중 각도가 큰 영역에서의 광량이 커지도록 해야 한다. 본 연구에서는 광원에서의 발산각을 180도로 확산시키기 위해 초광각 변환기를 사용하는 조명 광학계에 대해 논의하고자 한다.

• 제어로봇시스템학회논문지
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• 제11권4호
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• pp.353-362
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• 2005

This article describes a state-of-the art review in nano-biomanipulation technologies. Nanomanipulation of biological objects enables an in-depth study of single molecules such as DNA and RNA, and of biophysical events at the molecular level like molecular motors. Controlled nanomanipulation is challenging but essential for precisely engineering biomolecules or cells and for manufacturing functional nano-biosystems. In this paper, we summarize several contact, non-contact and hybrid methods available for nanomanipulation of biological objects. Advantages currently available methods and their limitations are also compared. Finally, we discuss possible applications of nano-biomanipulation technologies to life science and molecular medicine including cell biology, genetic engineering, biophysics, and biochemistry.

• 한국안광학회지
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• 제10권4호
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• pp.391-403
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• 2005

신체가 가지는 감각, 즉 오감 중 가장 중요한 것이 시각이다. 그것은 눈이 신체 내에서 가지는 신비성과 더불어 중요한 역할을 담당하는 기관이라는 것을 대신 해주고 있는 표현임에 틀림이 없다. 프랑스의 유명한 안경디자이너 알랑미클리(Alain Mikeli)는 안경을 "안경은 보는 것과 보여지는 것을 위해 존재 한다"라고 정의 하고 있다. 이 말은 안경이 안과 밖에서 보여 지는 가장 기본적인 기능을 철학적으로 잘 정리한 정의 중의 하나이다. 현재 세계에는 많은 안경디자인의 결과물들이 존재하고 안경디자이너들이 소비자에게 최상의 가치와 철학을 전달해 주기 위한 디자인 작업들이 많아 진행 되고 있다. 이것에 대한 최종 목표는 보는 것이라는 가장 기본적인 기능과 보여지는 기능을 디자이너의 감성을 통해 최고의 결과들을 만드는 것이며, 소비자의 만족감과 즐거움을 전달해 주기 위한 여러 가지 방법들을 시도하는 것이다. 여기에서 인터페이스라는 중요한 점을 파악할 필요가 있다. 안경은 사람이 가지는 눈과 보는 사용의 원활한 커뮤니케이션을 해야 하며 타인이 바라보는 자신의 모습에 대한 연결의 매개체, 즉 인터페이스의 역할을 충분히 해야 한다는 것이 현재 안경제품을 바라보는 디자이너들의 생각이다. 이것은 안경이 상호간의 인터페이스 역할을 충분히 해야 하여 이 점올 충족시키기 위해 디자인 초기에서부터 면밀히 검토되고 계획 되어야 한다. 본 연구는 옵티컬 아트라는 미술 주류를 이용해 사용자와 제품 간의 필요 충분 조건이 될 수 있도록 연구 하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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• pp.1129-1132
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• 2005

We report state-of-the-art phosphorescent organic light emitting diode lifetime and efficiency performances for a range of emission colors. Lifetimes in excess of 100,000hrs have been demonstrated at display luminance levels for saturated red emission. External quantum efficiencies close to the theoretical maximum (e.g. 23% without enhanced optical output coupling) are also demonstrated for devices with lifetimes in excess of 15,000hrs at a display level luminance for both orange red and green.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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• pp.1064-1067
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• 2002

The effects of different optical characteristics between desktop CRT and TFT-LCD were compared in terms of visual performance during a 4-hr visual text and icon search tasks. The result showed that CRT is more suitable for presenting graphic information whereas TFT-LCD is suitable for presenting text information at the state of the art display technology.

• 한국분말재료학회지
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• 제27권2호
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• pp.154-163
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• 2020

Fluorescent nanoparticles are characterized by their unique properties such as luminescence, optical transparency, and sensitivity to various chemical environments. For example, semiconductor nanocrystals (quantum dots), which are nanophosphors doped with transition metal or rare earth ions, can be classified as fluorescent nanoparticles. Tuning their optical and physico-chemical properties can be carried out by considering and taking advantage of nanoscale effects. For instance, quantum confinement causes a much higher fluorescence with nanoparticles than with their bulk counterparts. Recently, various types of fluorescent nanoparticles have been synthesized to extend their applications to other fields. In this study, State-of-the-art fluorescent nanoparticles are reviewed with emphasis on their analytical and anti-counterfeiting applications and synthesis processes. Moreover, the fundamental principles behind the exceptional properties of fluorescent nanoparticles are discussed.

• E2M - 전기 전자와 첨단 소재
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• 제8권1호
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• pp.64-70
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• 1995

We discussed the thermal analysis for a recording media with the variation of the laser pulse duration, the laser power and the temperature distribution in order to optimize the Te-based antireflection structure from the computer calculations. In the case that the radial heat diffusion is negligible, we can calculate the maximum temperature of the recording layer at the center of the spot by the Simple Model. The temperature profile of the recording layer is obtained from the Numerical Model by considering the total specific heat and the latent heat. As a result, the effect of the heat sinking acting as a thermal loss for the hole formation could be minimized by introducing the pulse with the hole formation duration(.tau.) below the thermal time constant(.tau.$_{D}$) of a dielectric layer. These requirments can be satisfied by using the dielectric thickness of the 2nd ART(Anti-Reflection Trilayer) condition or the dielectric materials with a low thermal diffusivity.y.