• Title/Summary/Keyword: Picture Quality

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Global Market Segmentation Strategy: A Comparison of Evaluation toward womens formal wear and casual wear among Korean and American consumers in 20s (한.미 20대 소비자의 여성 정장과 캐주얼시장 세분화를 위한 글로벌 마케팅 전략)

  • Lee, Seung-Hee;Lim, Sook-ja;Ahn, Cheun-soon;Yang, Yoon;Lennon, Sharron
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.4
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    • pp.807-816
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    • 2001
  • The purpose of this research was to compare American Korean consumers perceptions or evaluations of womens formal wear and casual wear. Results revealed that two groups classified differently the products in formal wear, not casual wear. In general, compared to Korean subjects, Americans rated the Korean business formal wear as more fashionable, attractive, stylish and of having higher quality than U.S. formal wear, indicating they were more likely to purchase. On the other hand, compared to U.S. subjects, in general, Koreans rated higher the U.S. casual wear as more liking, purchasing, comfortable, and appealing than Korean casual wear. Regarding clothing image toward each picture, there was a statically difference in both groups. To increase American or Korean exports of apparels, companies must look globally to develop new markets for their products.

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A Study on the Effect of Medical Device Purchase Decision Making (의료기기 구매의사결정에 영향을 주는 요인에 관한 연구)

  • Yeo, Jin Dong;Kim, Hye Sook;Kim, Mi Sook
    • The Korean Journal of Health Service Management
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    • v.2 no.1
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    • pp.28-36
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    • 2008
  • The purpose of this study was effect that get to purchase decision-making factor of medical device decision making. A survey of 262 hospitals to 480 hospitals was conducted from December 3, 2007 to January 4, 2008 in the Busan area. The data generated in the survey was analyzed with SPSS/Win version 10.0 and appropriate tests and statistics including t-tests, ANOVA analyses were used. A summary of the actual results of this analysis are as follows : Of the 262 hospitals surveyed 249(95.1%) were male and 13(4.9%) were female, which shows an absolute higher ration of the male respondents. On a question of Medical device purchase sanction rise 50% occupy. CEO of a hospital($4.58{\pm}.80$) is highest at medical device purchase. The highest factor of medical device purchasing is picture quality($4.86{\pm}.37$), after service($4.84{\pm}.40$), cost($4.36{\pm}.75$). Through the results of the above study, Principle and department influence are put than human relations in the medical device purchase decision making.

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Hardware Implementation of GA HDTV Video Encoder Using Hierarchical Motion Estimation and Adaptive Quantization (계층적 움직임 추정 및 적응 양자화 기법을 사용한 GA HDTV 동영상 부호화기 개발에 관한 연구)

  • 임경원;최병선;조현덕;최정필;유한주;송병철;김성득;박현상;나종범
    • Journal of Broadcast Engineering
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    • v.1 no.2
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    • pp.152-164
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    • 1996
  • This paper describes the hardware architecture and implementation trade-offs of the Grand Alliance HDTV video encoder system. The implemented video encoder accepts video in 1125 line(30Hz) interlaced format, and produces a bit-stream compliant with the motion picture experts group version 2(MPEG-2) standards. The encoder processing includes large- area motion estimation and an advanced rate control mechanism. To keep the system complexity realizable, we adopt a fast hierarchical motion estimation method and developed its hardware architecture. Furthermore an adaptive perceptual quantization method is adopted to improve the perceptual quality. The developed system Is based on the 4-way parallel processing architecture and is implemented by using programmable IC, memory IC, and special-purpose processors such as DCT and motion estimation processors.

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Stabilization Technique for 360 VR Video Sequences (360 VR 영상용 흔들림 제거 기술)

  • Kim, Geun-Bae;Lee, Jae-Yung;Han, Jong-Ki
    • Journal of Broadcast Engineering
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    • v.22 no.6
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    • pp.817-828
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    • 2017
  • In this paper, we propose an efficient stabilization algorithm for 360 VR sequence, where the geometric information and the relationship between various projection formats have been utilized. The proposed scheme consists of '1st stitching', 'extraction of wide angle picture from VR data', 'stabilization', and '2nd stitching'. The simulation results show that the proposed method outperforms the conventional algorithms in the viewpoint of image quality for end-user.

An Image-Based Annotation for DICOM Standard Image (DICOM 표준 영샹을 위한 이미지 기반의 주석)

  • Jang Seok-Hwan;Kim Whoi-Yul
    • Journal of Korea Multimedia Society
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    • v.7 no.9
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    • pp.1321-1328
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    • 2004
  • In this article, we present a new DICOM object able to create image-based annotations in DICOM image. Since the proposed image-based annotation uses images themselves of annotation, various types like character, sketch, and scanning image, etc., can be imported into annotation easily. The proposed annotation is inserted into DICOM image directly but they do not influence original DICOM image quality by using independent data channel. The proposed annotation is expected to be very useful to medium and small clinics that cannot afford picture archiving and communication systems or electronic medical record.

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$\Delta$-Shaped Interpolation Algorithm for Displaying the Multi-Source Signal on the Flat Panel Display (FPD 상에서 다중 신호원을 디스플레이하기 위한 $\Delta$-Shaped 보간 알고리즘)

  • 박병기;최철호;박진성;권병헌;최명렬
    • Journal of Korea Multimedia Society
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    • v.2 no.1
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    • pp.89-98
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    • 1999
  • In this paper, we propose the delta-shaped interpolation method for displaying multi-source video signals on a-Si TFT LCD Panel. The proposed method can be implemented by using less circuits than the conventional methods. Thus it can be applied to the FPD(Flat Panel Display) system without any cost increase such as field memory cost. In order to compare the picture quality of the proposed method with that of the conventional methods, the computer simulation has been executed by checking PSNR, which is especially focused on the edge characteristics. The simulation results show that the proposed method is better than others from the point of view on the edge and local characteristics of the image. Finally, the characteristics and trade-off of the proposed method are discussed.

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A Study on the Space Program of the Day-Care Centers in Workshop Area (직장어린이집의 공간구성현황과 개선방향에 관한 연구 - 서울지역을 중심으로 -)

  • Lee Kwang-Ok
    • Korean Institute of Interior Design Journal
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    • v.14 no.1
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    • pp.109-117
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    • 2005
  • The women's roles In 21s1 century in Korea is increasing as the industry, economy is growing and changing rapidly; thus raising the necessity and importance of early learning. Naturally the importance and needs of children's day-care center is increasing both in quantitative and quality matters, there needs for much improvements. This study selected 8 workshop day-care centers in Seoul area, where most day-care centers are located, and analyzed interior spaces; thus presenting the appropriate model of interior space in child day-care center. Starting with, examining theologically, this study focused on the history of child day-care center and the 8 selected day-care centers in Seoul. By analyzing the operation status, blue prints, and picture, this study focused on improving the interior spaces in day-care centers. The presented improvement in spaces are the fellowing, First, half of day-care centers in workshops had independent buildings and most were multi-storey building. Second, running status vary. The open hours and number of teachers were fine but the budgets ratio of the employer and the worker ratio needed improvements. Third, there is need for detailed more improvement In managing area, educational area, and service area. It recommendable for spaces of day-care centers in workshops to be a single-storey building with managing and service space placed In center with educational rooms on each sides, with single hall way.

Evaluation of Radiolucent Considering the Compression Paddle Materials in Mammography (유방촬영장치의 압박대 재질을 고려한 투과선량 평가)

  • Hong, Dong-Hee
    • The Journal of the Korea Contents Association
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    • v.15 no.11
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    • pp.307-312
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    • 2015
  • Mammography improves image quality that is on the increase day by day and get a picture with the pressure it is essential to reduce the dose. However, because due to the thickness of the cuff itself may increase the dose scattering lines is necessary study on the cuff material. Material that is currently being used in clinical Polycarbonate is a plastic and family. If you try to reduce the exposure of patients than itgie need to consider for the better material in this study to compare against a radiolucent line for amorphous plastic material of the plastic. results radiolucent and half layer, transmitting dose Pixel values HIPS, GPPS, ABS, Tritan, PC, PMMA showed high results in the net.

Two-Step Rate Distortion Optimization Algorithm for High Efficiency Video Coding

  • Goswami, Kalyan;Lee, Dae Yeol;Kim, Jongho;Jeong, Seyoon;Kim, Hui Yong;Kim, Byung-Gyu
    • Journal of Multimedia Information System
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    • v.4 no.4
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    • pp.311-316
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    • 2017
  • High Efficiency Video Coding (HEVC) is the newest video coding standard for improvement in video data compression. This new standard provides a significant improvement in picture quality, especially for high-resolution videos. A quadtree-based structure is created for the encoding and decoding processes and the rate-distortion (RD) cost is calculated for all possible dimensions of coding units in the quadtree. To get the best combination of the block an optimization process is performed in the encoder, called rate distortion optimization (RDO). In this work we are proposing a novel approach to enhance the overall RDO process of HEVC encoder. The proposed algorithm is performed in two steps. In the first step, like HEVC, it performs general rate distortion optimization. The second step is an extra checking where a SSIM based cost is evaluated. Moreover, a fast SSIM (FSSIM) calculation technique is also proposed in this paper.

Quantization Parameter Selection Method For H.264-based Multi-view Video Coding (H.264 기반 다시점 비디오 부호화를 위한 양자화 계수 결정 방법)

  • Park, Pil-Kyu;Ho, Yo-Sung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.6C
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    • pp.579-584
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    • 2007
  • Recently various prediction structures have been proposed to exploit inter-view correlation among multi-view video sequences. In this paper, we propose a QP(quantization parameter) selection method for the B frame inserted in the first frames of each GOP(group of pictures), where we change QP for the B frame adaptively to achieve uniform picture quality and overall coding gain. Each B frame is coded with reference to two frames in its adjacent views. We calculate QP for the B frame based on the correlation between the two reference frames, calculated using their rate-distortion costs. By applying the proposed method to the MVC reference prediction structure, we have improved the coding gain by 0.09$\sim$0.16 dB.