• 한국측량학회:학술대회논문집
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• 한국측량학회 2006년도 춘계학술발표회 논문집
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• pp.229-234
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• 2006

On May 31, 2003. Landsat 7 experienced an anomaly causing the Scan Line Corrector(SLC) to stop functioning normally. The SLC-off causes individual scan lines to alternately overlap and then leave large gaps at the edge of the Image. A many scientists with ongoing experience using ETM+ data evaluated the scientific usability and validity of Landsat 7 products containing the SLC anomaly The best reference scene for gap-filling is the other SLC-on Landsat scene that provide same resolution, few changes, and similar data acquisition. But receiving of Landsat imagery is not stable in Korea. So SPOT image can be another alternative solution because it is a steady-state multispectral satellite image as Landsat image. In this study, we filled the SLC-off gap s of 2, 3, 4 bands using SPOT image by a local regression technique, and assigned the optimum spectral value to gaps of 1, 5, 7 bands based on a spectral adjacency. Through this process, we could restore Landsat SLC-off image and evaluated the accuracy of the results.

• Journal of the Optical Society of Korea
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• 제14권4호
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• pp.388-394
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• 2010

In this paper the object recognition performance of a photon counting integral imaging system is quantitatively compared with that of a conventional gray scale imaging system. For 3D imaging of objects with a small number of photons, the elemental image set of a 3D scene is obtained using the integral imaging set up. We assume that the elemental image detection follows a Poisson distribution. Computational geometrical ray back propagation algorithm and parametric maximum likelihood estimator are applied to the photon counting elemental image set in order to reconstruct the original 3D scene. To evaluate the photon counting object recognition performance, the normalized correlation peaks between the reconstructed 3D scenes are calculated for the varied and fixed total number of photons in the reconstructed sectional image changing the total number of image channels in the integral imaging system. It is quantitatively illustrated that the recognition performance of the photon counting integral imaging system can be similar to that of a conventional gray scale imaging system as the number of image viewing channels in the photon counting integral imaging (PCII) system is increased up to the threshold point. Also, we present experiments to find the threshold point on the total number of image channels in the PCII system which can guarantee a comparable recognition performance with a gray scale imaging system. To the best of our knowledge, this is the first report on comparisons of object recognition performance with 3D photon counting & gray scale images.

• 한국정보통신학회논문지
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• 제15권6호
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• pp.1283-1288
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• 2011

본 논문에서는 수면을 취하는 침실의 수면 환경 데이터를 수집하고, 얻어진 조건 데이터들과 수면간의 관계를 분석한다. 또한 수면을 취하는 사람으로부터 장면 전환을 검출하여 신체의 상황과 수면 과정의 반응, 신체의 감각과 자극들을 제시한다. 영상의 장면 전한 검출은 컬러 히스토그램을 사용하였다. 컬러 히스토그램은 이전 프레임과 현재 프레임사이의 컬러 히스토그램 차이 값을 이용하는 방법이다. 그리고 피곤한 정도, 음주의 정도, 그리고 공복의 정도를 입력하여 각 상황별 뒤척임을 추출하도록 하였다. 시스템의 실험에는 온/습도 센서와 조도센서로 구성되어 있는 H-MOTE2420 센서를 이용하였다. 본 논문에서는 현대인들에게 규칙적이고 안락한 수면을 유도하기 위하여 최적의 수면 환경을 제공함으로써 수면의 질을 높일 수 있도록 한다.

• 트랜스-
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• 제3권
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• pp.1-28
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• 2017

영화미학의 영역이 확장됨에 따라 고전적 연출의 미장센 개념 또한 그 영역을 확장하게 되었다. 본고는 영화 미장센의 개념을 공간적인 연관성을 통해 들여다보면서, 이를 프레임과 쇼트의 차원, 신과 시퀀스의 연속성 개념, 그리고 미학적 차원에서의 플랑세캉스 개념에 이르기까지 세부적 연관성을 통해 들여다보려 한다. 이 과정에서 디지털영화에서 플랑세캉스 사용에 관한 현재적 의미를 찾을 수 있을 것이라 기대한다. 현대영화에 이르러 미장센의 요소는 효율적인 측면에서 더 강조되는 측면이 있지만, 본고는 여전히 고전주의적 미학 체계가 여전히 중요하다는 점을 이르고 있다. 이를 위해 과거 리얼리즘 미학의 최고 테크닉으로 불렸던 플랑세캉스(plan-séquence) 개념이 현대의 디지털영화에서 어떻게 활용되고 있는지를 살핀다. 다양한 미장센의 영역 중에서도 특히 플랑세캉스의 '길게 찍기(long take)'는 사건을 준비하고 응용하는 과정에서 유용하게 활용되는 사실주의의 도구로 쓰인다. 영화 자체가 상업적으로 활용되는 현실의 영역에서, 디지털영화가 플랑세캉스 개념을 통해 '지정학적 무의식'의 알레고리를 활용할 수 있는 개념적 도구임을 본고는 말하고 있다. 이 과정에서 플랑세캉스가 이루고자 하는 거시적 목표가 '시각적 매개 변수'가 아닌, '지속시간'과 관련한 특정 의도로 보는 편이 더 적합하다는 것을 알게 된다. 이때 지속시간 개념이 크로노스(Chronos)가 아닌, 카이로스(kairos)로서의 '주관적이고 의식적인 시간'이라는 점도 본 연구 과정에서 드러나는 성과라 할 수 있다.

• 한국멀티미디어학회논문지
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• 제18권8호
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• pp.988-995
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• 2015

In 2013, Academy Award for Best Animated Short Film was granted to Walt Disney's short animation, (2012). With various aspects of its excellence, I focus on the very effective use of digital lightings and underscores for storytelling as its success factors. In this respect, this paper aims at analyzing the roles of the visual factors, especially tone, contrast, etc. created by lightings, and audio factors, especially underscores, in the film's story development. I find that can be characterized by the well-built story structure with distinct three acts. The main stream of the story is expressed with the overall mood that is created by the fine adjustments of brightness of the main light, and contrast. And the direction and the intensity of the lighting successfully describe the emotions of the characters in each scene. In addition, I find that properly chosen and positioned underscores make the development of the story more dynamic and more harmonized.

• 한국환경과학회지
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• 제21권6호
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• pp.661-666
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• 2012

This article reveals the relationship between the body characteristics of the elder people and the size of park facilities during utilization of parks by scientific investigation. The experiment involves 540 elder people, and offer concrete evidence for park design in ageing society. These evidences mainly consists of the following aspects: First, the relation between physical situation of elder people and their using parks. Secondly, the relation between the hearing status and exchange circle diameter in elders. The last is the relation between the distance visual acuity and designing the scene. Finally we get the most suitable step length range, stairs height, road slope, communication space diameter and general formulas about the best vision distance for elder people.

• 전자공학회논문지C
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• 제34C권10호
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• pp.67-75
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• 1997

A design for a system to perform rapid recognition of three dimensional objects is presented, focusing on efficient indexing. In order to retrieve the best matched models without exploring all possible object matches, we have employed a bayesian framework. A decision-theoretic measure of the discriminatory power of a feature for a model object is defined in terms of posterior probability. Detectability of a featrue defined as a function of the feature itselt, viewpoint, sensor charcteristics, nd the feature detection algorithm(s) is also considered in the computation of discribminatory power. In order to speed up the indexing or selection of correct objects, we generate and verify the object hypotheses for rfeatures detected in a scene in the order of the discriminatory power of these features for model objects.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 하계종합학술대회 논문집
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• pp.421-424
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• 1999

Automatic human face detection in a complex background is one of the difficult problems In this paper. we propose an effective automatic face detection system that can locate the face region in natural scene images when the system is used as a pre-processor of a face recog- nition system. We use two natural and powerful visual cues, the color and the human head shape. The outline of the human head can be generally described as being roughly elliptic in nature. In the first step of the proposed system, we have tried the approach of fitting the best Possible ellipse to the outline of the head In the next step, the method based on the human skin color space by selecting flesh tone regions in color images and histogramming their r(＝R/(R＋G＋B)) and g(＝G/R＋G＋B)) values. According to our experiment. the proposed system shows robust location results

• 한국멀티미디어학회논문지
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• 제22권1호
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• pp.27-34
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• 2019

In this paper, a new type of lip feature is proposed as distance metric in CIELUV color system. The performance of the proposed feature was tested on face image database, Helen dataset from University of Illinois. The test processes consists of three steps. The first step is feature extraction and second step is principal component analysis for the optimal projection of a feature vector. The final step is Otsu's threshold for a two-class problem. The performance of the proposed feature was better than conventional features. Performance metrics for the evaluation are OverLap and Segmentation Error. Best performance for the proposed feature was OverLap of 65% and 59 % of segmentation error. Conventional methods shows 80~95% for OverLap and 5~15% of segmentation error usually. In conventional cases, the face database is well calibrated and adjusted with the same background and illumination for the scene. The Helen dataset used in this paper is not calibrated or adjusted at all. These images are gathered from internet and therefore, there are no calibration and adjustment.

• International journal of advanced smart convergence
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• 제11권2호
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• pp.71-76
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• 2022

The continuous development of virtual reality technology in the last five years has brought about a big change in the future film industry. Interactive VR movies using virtual reality technology in movies showed the result of increasing the immersion of the audience due to the characteristics of interaction. This will provide a unique opportunity for a new experience of immersion in various forms of cinema in the near future. In this paper, the interaction of narrative VR movies was studied as an example of the movie , which won the [The Best VR Experience Award] at the Venice International Film Festival, In future development, improve the scene transition, Dizziness, Ways of interaction and other questions, let the audience increase the sense of participation, immersion and curiosity when watching movies, and make watching movies a more interesting thing in life.