• Journal of the Korean Society of Costume
• /
• v.50 no.3
• /
• pp.145-159
• /
• 2000

The first introduction of reformed Korean traditional cloth in was started in the age of civilization and until liberation from imperialism it was made a reformation in faculty from Korean traditional clothing. And by 1980s western style costume took lead but after Asian Game in 1986 and Seoul Olympic in 1988 Korean traditional beauty was added to costume and there were various attempt to produce truly reformed Korean traditional clothing. The present condition of reformed Korean traditional clothing in 1990s are like this : 1) Most of reformed Korean traditional clothing ships could not fractionalize customers. So it needs to subdivide and specialize customer and investment to improvement of design. 2) A large percentage of reformed Korean traditional clothing is ordinary dresses. So it should develop various sorts and color, design and textile and be in harmony with international trend. 3) Most of shops handled a coordinate goods like a bag and shoes. 4) In the investigation customers they wanted various colors, high quality in design , logical price and a periodical sale. So four pieces of the reformed Korean traditional costumes were designed and produced based on the present condition.

• Proceedings of the KSME Conference
• /
• 2000.11a
• /
• pp.559-563
• /
• 2000

In this paper we describe a method for aligning a robot gripper using image information. The region of gripper is represented from HSI color model that has major advantage of brightness independence. In order to extract the feature points for vision based position control, we find the corners of gripper shape using polygonal approximation method which determines the segment size and curvature of each points. We apply the vision based scheme to the task of alignment of gripper to reach the desired position by 2 RGB cameras. Experiments are carried out to exhibit the effectiveness of vision based control using feature points from polygonal approximation of gripper.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2002.08a
• /
• pp.167-170
• /
• 2002

We have proposed new pixel structures for Active Matrix OELD (AMOELD) to improve the uniformity of luminance and manufactured a full-color 3.6-inch QVGA AMOELD. The proposed pixel structures, composed of four TFTs and one capacitor, can display 64 gray scales by compensating threshold voltage (Vth) variation of driving TFTs. Nonuniformity and peak intensity of measured luminance are under 14% and over $200cd/m^2$, respectively.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.10a
• /
• pp.712-715
• /
• 2016

최근, 뷰티 산업 활성화와 더불어 소셜 미디어 확산으로 인해 아름다워지고자 하는 인간의 욕구가 과거보다 증대되어, 자신에게 어울리는 메이크업과 패션을 찾고자 하는 경향이 강해지고 있다. 이에 따라 자신을 돋보이게 하는 퍼스널 컬러가 주목받으면서 전문가에게 자신의 퍼스널 컬러를 진단받는 사람이 늘어나고 있다. 하지만 이러한 진단은 전문가의 주관적인 판단으로 결정되므로 정확한 진단을 받기 어려우며 진단에 따른 시간적, 비용적 소모가 발생하는 문제점이 있다. 본 연구에서는 이러한 문제점을 해결하기 위해, 온라인상에서 영상처리를 통해 효과적인 퍼스널 컬러 분석과 메이크업 추천이 가능한 시스템을 제안한다. 다양한 영상처리 방법을 통하여 사용자의 신체 영역을 추출하고, 색상 데이터 값을 이용하여 퍼스널 컬러를 분석하였으며 그에 따라 적절한 메이크업 콘텐츠를 추천하는 기법을 제안하였다. 마지막으로, 다양한 사용자로부터 만족도 실험을 통해 제안한 기법이 효과적임을 나타내었다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.04b
• /
• pp.418-420
• /
• 2001

최근 디지털 비디오 데이터의 사용이 급격히 증가하면서 보다 정확하게 샷을 검출하는 기법이 요구되고 있다. 비디오 정보를 이용하여 샷을 검출하는 역는 크게 이산코사인 변환의 결과값을 이용하는 방법과 움직임 보상의 결과값을 이용하는 방법으로 그룹화할 수 있는데 전자의 방법은 점진적인 변화를 검출할 수 있는 반면에 전체적인 검출율이 떨어진다는 단점이 있고, 후자의 방법은 전체적인 검출율은 높지만 점진적인 변화를 검출할 수 없다는 단점이 있다. 본 논문에서는 실험을 통하여 이러한 두 가지 방법의 특징을 살펴본 후 이 방법들을 이용한 새로운 샷 경계 검출 방법을 제안한다. 전체적으로 검출율을 높이는 데 목적을 두었기 때문에 매크로블록 타입을 이용하는 방법을 기본으로 하면서 히스토그램을 이용하는 방법을 추가하여 precision을 높일 수 있도록 하였다. 히스토그램을 이용하는 방법에서는 단순히 프레임과의 비교를 하던 기존의 방법에다 프레임들간의 차이의 차이를 이용하여 성능을 높일 수 있도록 하였다. 본 논문에서 제안한 알고리즘을 이용하여 실험을 한 결과 평균 0.96의 recall과 0.96의 precision을 보이고 있음을 알 수 있었다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2004.11a
• /
• pp.223-228
• /
• 2004

현재 모바일 환경에서 PDA, 휴대폰 등으로 많은 캐릭터 영상들이 서비스되고 있다. 본 논문에서는 이러한 캐릭터 영상들의 무손실 동영상 압축 방법을 제안한다. 캐릭터 영상은 256컬러 인덱스 영상이며. 영상간에 유사한 컬러로 제작된다. 제안한 압축방법은 기존 MPEG, H.264에서 사용하는 동영상 부호화 기법이외에도 캐릭터 영상의 특성을 반영한다. 각 블록 타입을 DC mode, INTER mode, 및 INTRA mode로 분류하는데 다른 mode와 유사하게 DC mode는 캐릭터 영상의 특성을 활용한다. INTER mode는 예측 에러의 분포를 분석하여 세 가지 예측 방법들 중에서 압축 효율이 우수한 방법으로 처리한다. 또한 INTRA mode는 4개의 서브모드로 나누어 압축 효율성을 제고한다. 12개의 캐릭터 실험 영상들은 각각 12장의 영상으로 구성되는데, 제안 압축 방법을 적용하면 평균 1.44:1의 압축율을 얻는다. 또한 실험결과에서는 각 블록 타입의 비율 및 INTRA와 INTER블록의 비율을 조절하여 얻어 지 는 압축율의 변화를 조사하였다.

• Journal of the Optical Society of Korea
• /
• v.19 no.5
• /
• pp.456-466
• /
• 2015

We investigated an anti-aliasing (AA) filter for digital camera photography by which the excessively high-frequency components of the image signal are suppressed to avoid the aliasing effect. Our optomechanical AA filter was implemented by applying rapid relative motions to the imaging sensor. By the engineered motion blur of the mechanical dithers, the effective point-spread function (PSF) of the imaging system could be tailored to reject the unwanted high-frequency components of the image. For optimal operations, we developed a spiral filter motion protocol that could produce a Gaussian-like PSF. We experimentally demonstrated that our AA filter provides an improved filtering characteristic with a better compromise of the rejection performance and the signal loss. We also found that the pass band characteristic can be enhanced further by a color-differential acquisition mode. Our filter scheme provides a useful method of digital photography for low-error image measurements as well as for ordinary photographic applications where annoying $moir{\acute{e}}$ patterns must be suppressed efficiently.

• Journal of KIISE:Software and Applications
• /
• v.26 no.1
• /
• pp.150-150
• /
• 1999

In this paper, a content-based image retrieval scheme based on scale-space theory is proposed. The existing methods using scale-space theory consider all scales for image retrieval,thereby requiring a lot of computation. To overcome this problem, the proposed algorithm utilizes amodified histogram intersection method to select candidate images from database. The relative scalebetween a query image and a candidate image is calculated by the ratio of histograms. Feature pointsare extracted from the candidates using a corner detection algorithm. The feature vector for eachfeature point is composed of RGB color components and differential invariants. For computing thesimilarity between a query image and a candidate image, the euclidean distance measure is used. Theproposed image retrieval method has been applied to various images and the performance improvementover the existing methods has been verified.

• Proceedings of the KSRS Conference
• /
• 2003.11a
• /
• pp.773-775
• /
• 2003

From the view point of data fusion, we integrate LIDAR data and digital aerial images to perform 3D building modeling in this study. The proposed scheme comprises two major parts: (1) building block extraction and (2) building model reconstruction. In the first step, height differences are analyzed to detect the above ground areas. Color analysis is then performed for the exclusion of tree areas. Potential building blocks are selected first followed by the refinement of building areas. In the second step, through edge detection and extracting the height information from LIDAR data, accurate 3D edges in object space is calculated. The accurate 3D edges are combined with the already developed SMS method for building modeling. LIDAR data acquired by Leica ALS 40 in Hsin-Chu Science-based Industrial Park of north Taiwan will be used in the test.

• Journal of Biomedical Engineering Research
• /
• v.27 no.1
• /
• pp.6-13
• /
• 2006

Ultrasound visualization is a typical diagnosis method to examine organs, soft tissues and fetus data. It is difficult to visualize ultrasound data because the quality of the data might be degraded by artifact and speckle noise, and gathered with non-linear sampling. Rendering speed is too slow since we can not use additional data structures or procedures in rendering stage. In this paper, we use several visualization methods for fast rendering of ultrasound data. First method, denoted as adaptive ray sampling, is to reduce the number of samples by adjusting sampling interval in empty space. Secondly, we use early ray termination scheme with sufficiently wide sampling interval and low threshold value of opacity during color compositing. Lastly, we use bilinear interpolation instead of trilinear interpolation for sampling in transparent region. We conclude that our method reduces the rendering time without loss of image quality in comparison to the conventional methods.