• 제목/요약/키워드: Color scheme

검색결과 413건 처리시간 0.028초

안드로이드 스마트폰 기반 Smart pH Reader 개발 (Development of Smart pH Reader Based on Android Smart Phone)

  • 김민지;장병용;주문갑
    • 대한임베디드공학회논문지
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    • 제8권4호
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    • pp.227-233
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    • 2013
  • In this paper, we propose an implementation of pH reader on Android smart phone by using Eclipse and SDK. After taking a picture of pH spectrum and tested litmus paper at the same time, we save the picture. From the picture, reference values in RGB and YUB of all pH color in the spectrum are obtained and then those of a chosen point by user in the litmus paper are to be compared with. The distances between the reference colors and the litmus paper's color are measured by Euclidean distance in RGB or YUB coordinate. The nearest two pH values are taken to find the weighted average of the result. Series of test show the proposed scheme is feasible and has performance within 10% error.

세라믹 메탈할라이드 램프의 전자식 안정기 구동을 통한 전기적 광학적 특성에 관한 연구 (Electrical and Optical Characteristics of Ceramic Metal Halide Lamp with Operating Electronic Ballast)

  • 김남군;양종경;이주호;장혁진;박대희
    • 전기학회논문지
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    • 제57권12호
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    • pp.2238-2243
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    • 2008
  • The use of arc tubes made of ceramic material further enhanced some of the metal halide lamp's properties. These properties translate into higher efficacy with better color rendering, stable color through lamp long life. Recently, due to an increase in the application of the ceramic metal-halide lamp, the study for the property etc. according to Ballast's driving scheme and the study for arc tube material, optimization of gas and so on are being proceeded to improve the property of the lamp. Especially, to control ceramic metal-halide lamp, the vigorous study and practical use with respect to Electronic Ballast, which has been improved in the disadvantages of the conventional Magnetic Ballast are made. In this paper, Electrical, optical and thermal characteristics are analyzed by comparing magnetic ballast with electronic ballast.

웨이브렛 변환과 다중 가중치를 이용한 강인한 패턴 워터마킹 (Robust pattern watermarking using wavelet transform and multi-weights)

  • 김현환;김용민;김두영
    • 한국통신학회논문지
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    • 제25권3B호
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    • pp.557-564
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    • 2000
  • This paper presents a watermarking algorithm for embedding visually recognizable pattern (Mark, Logo, Symbol, stamping or signature) into the image. first, the color image(RGB model)is transformed in YCbCr model and then the Y component is transformed into 3-level wavelet transform. Next, the values are assembled with pattern watermark. PN(pseudo noise) code at spread spectrum communication method and mutilevel watermark weights. This values are inserted into discrete wavelet domain. In our scheme, new calculating method is designed to calculate wavelet transform with integer value in considering the quantization error. and we used the color conversion with fixed-point arithmetic to be easy to make the hardware hereafter. Also, we made the new solution using mutilevel threshold to robust to common signal distortions and malicious attack, and to enhance quality of image in considering the human visual system. the experimental results showed that the proposed watermarking algorithm was superior to other similar water marking algorithm. We showed what it was robust to common signal processing and geometric transform such as brightness. contrast, filtering. scaling. JPEG lossy compression and geometric deformation.

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비축소 프레임간 변환을 이용한 컬러 동영상 프랙탈 부호화 기법 (A fractal coding technique for color image sequence employing non-contractive interframe mapping)

  • 김창수;김인철;이상욱
    • 한국통신학회논문지
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    • 제22권8호
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    • pp.1707-1714
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    • 1997
  • This paper proposes a novel algorithm for fractal coding of image sequence, based on the CPM (Circular Prediction Mapping) and the NCIM (Non Contractive Interframe Mapping). In the CPM and the NCIM, each range block is approximated by a domain block in the adjacent frame, which is of the same size as the range block. Also, in this paepr, we propose a coding scheme of color components and an algorithm for controlling the bit rate, resepectively, for practical implementation of the fractal coder. The computer simulation results on real image sequences demonstrate that the proposed algorithm provides very promising performance at low bit-rate, below 256 Kbps.

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Simulation of Color Pencil Drawing using LIC

  • Yang, Heekyung;Min, Kyungha
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제6권12호
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    • pp.3296-3314
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    • 2012
  • We present a novel approach for the simulation of color pencil effects using line integral convolution (LIC) to produce pencil drawings from images. Our key idea is to use a bilateral convolution filter to simulate the various effects of pencil strokes. Our filter resolves the drawbacks of the existing convolution-based schemes, and presents an intuitive control to mimic the properties of pencil strokes. We also present a scheme that determines stroke directions from the shapes to be drawn. Smooth tangent flows are used for the pixels close to feature lines, and partially parallel flows inside regions. The background is rendered using a flow of fixed direction. Using different styles of stroke directions increases the realism of the resulting images. This approach produces convincing pencil drawing effects from photographs.

Simple Application Cases of Morphing Method using Geo-spatial Data

  • Lee, Ki-Won;Park, Yong-Jae
    • 대한원격탐사학회지
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    • 제24권3호
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    • pp.251-256
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    • 2008
  • Morphing method, one of classic image processing algorithms, has been used in various application fields. The motivation of this work is to investigate its applicability in consideration to geo-spatial data including airborne or space-borne images. For this purpose, the Beier and Neely morphing algorithm is tentatively implemented in the form of a prototype with user interface. As the results, this feature-based morphing with paired image sets can be used for general users: image simulation using two or more images and construction of color-blending image between source image and destination image in different types. Some simple application cases were demonstrated. This scheme is the simple and useful approach for those who want to utilize both geo-spatial data sets and airborne/space-borne image sets.

얼굴 특징 변화에 따른 휴먼 감성 인식 (Human Emotion Recognition based on Variance of Facial Features)

  • 이용환;김영섭
    • 반도체디스플레이기술학회지
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    • 제16권4호
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    • pp.79-85
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    • 2017
  • Understanding of human emotion has a high importance in interaction between human and machine communications systems. The most expressive and valuable way to extract and recognize the human's emotion is by facial expression analysis. This paper presents and implements an automatic extraction and recognition scheme of facial expression and emotion through still image. This method has three main steps to recognize the facial emotion: (1) Detection of facial areas with skin-color method and feature maps, (2) Creation of the Bezier curve on eyemap and mouthmap, and (3) Classification and distinguish the emotion of characteristic with Hausdorff distance. To estimate the performance of the implemented system, we evaluate a success-ratio with emotional face image database, which is commonly used in the field of facial analysis. The experimental result shows average 76.1% of success to classify and distinguish the facial expression and emotion.

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Directional Interpolation Based on Improved Adaptive Residual Interpolation for Image Demosaicking

  • Liu, Chenbo
    • Journal of Information Processing Systems
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    • 제16권6호
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    • pp.1479-1494
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    • 2020
  • As an important part of image processing, image demosaicking has been widely researched. It is especially necessary to propose an efficient interpolation algorithm with good visual quality and performance. To improve the limitations of residual interpolation (RI), based on RI algorithm, minimalized-Laplacian RI (MLRI), and iterative RI (IRI), this paper focuses on adaptive RI (ARI) and proposes an improved ARI (IARI) algorithm which obtains more distinct R, G, and B colors in the images. The proposed scheme fully considers the brightness information and edge information of the image. Since the ARI algorithm is not completely adaptive, IARI algorithm executes ARI algorithm twice on R and B components according to the directional difference, which surely achieves an adaptive algorithm for all color components. Experimental results show that the improved method has better performance than other four existing methods both in subjective assessment and objective assessment, especially in the complex edge area and color brightness recovery.

한국 개창 신흥종교 의례복식에 관한 연구 (A Study on the Ceremonial Costumes in New Aboriginal Religious Groups in Korea)

  • 김현경;임상임
    • 대한가정학회지
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    • 제41권2호
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    • pp.123-139
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    • 2003
  • This study examines the characteristics of 45 sects of seven new aboriginal religious groups in Korea including Jeungsan sect, Tangun sect, Soowoon sect, Won Buddhism, Bongnam sect, Gahksedo sect, Shamanism sect through field study and various documents. The purpose of the study is to elucidate how their religious ideas are reflected in their ceremonial costumes and what characteritics and underlying meanings these costumes have, and I reached the following conclusions 1. The new religious groups in Korea modified or mixed the designs or names of existing outfits to convey their ideas or beliefs in their costumes. 2. The costumes of new religious groups turned out to have certain characteristics in common: they all reflected the times, Korean tradition, ancestor worship. 3. I looked at the symbolicity, names, and types of the outfit, and their color scheme to establish their structural characteristics, and it turned out that they an symbolized the creeds and ideas of each religion. The names of the costumes such as Way-Robe, Law-Robe, and Ceremony-Robe, for instance, had to do with Buddhism Taoism, and Confucianism. The most common type of costume consisted of traditional hanbok top, pant, robe, and some type of headpiece for men, and hanbok top and, skirt for women, and if women were to wear a robe, it usually meant the sect believed in sexual equality. There was also a tendency to simplify or minimize the dress code, which seems to indicate that the sect was trying to adapt itself to, the times. The most common type of the outer garment for men was a robe with narrow sleeves, straight lapel, and no slits, and a robe with wide sleeves, straight lapel, and slits for women. The color scheme of the costumes included blue, white, yellow, red, and black, reflecting the influence of the Yin-Yang and Five Elements idea and traditional preference for white of Koreans. 4. These religious costumes were worn at various ceremonies, ritual, and various anniversary services for the master and other dignitaries of the sect to render greater piety to those gatherings, to distinguish the sect from other religious groups, to clarify the meaning of the ceremony, and to heighten the devout feelings of the participants. Thus, the structure (the symbolicity, names, and types of the outfit, and their color scheme) and religious background of the costumes of the new aboriginal religious groups in Korea turned out to have inherited and mixed various element of traditional Korean outfit and those of existing religions to symbolize their religious ideas. Many religions in and fall, and each has its own dress codes, and I hope this study provides a framework and data for other researchers and leaders of new religious groups that will emerge in the future.

조위관측기록지 이미지에서 그래프 영역 검출 기법 (The Detection Scheme of Graph Area from Sea Level Measurements Recording Paper Images)

  • 유영중;김영주;박성호
    • 한국정보통신학회논문지
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    • 제14권11호
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    • pp.2555-2562
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    • 2010
  • 본 논문에서는 수작업을 최소화하면서 조위 기록지로부터 조위 기록 그래프를 추출하는 방법을 제안한다. 사용자가 그래프 상의 하나의 픽셀을 선택하면, 선택된 픽셀과 나머지 픽셀들과의 LAB 색상 공간상에서의 관계를 이용해 자동으로 대부분의 배경 픽셀들을 결정한다. 배경 픽셀들이 결정되면, 각 세로줄에서 그래프 영역으로 판단되는 한개의 픽셀을 추출하고, 이 픽셀을 시작 위치로 하여 나머지 그래프 영역을 추출한다. 실험 결과는 다양한 종류의 조위 기록지로부터 최소한의 수작업만으로 조위 기록 그래프 영역을 검출할 수 있음을 보여준다.