• Title/Summary/Keyword: Color Similarity

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Stereoscopic 3D Video Editing Method for Visual Comfort (시각적 편안함을 위한 입체적 삼차원 영상 편집 방법)

  • Kim, Jung-Un;Kang, Hang-Bong
    • Journal of Korea Multimedia Society
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    • v.19 no.4
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    • pp.706-716
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    • 2016
  • Each year, significant amounts of Stereoscopic 3D(S3D) contents have been introduced. However, viewers who enjoy the contents readily experience a sense of fatigue on account of various factors. Consequently, many improvement studies have been conducted with the domain of disparity by, for example, simply controlling the disparity or optimizing the reaction speed of viewers' eyes to vergence. However, such studies are limited to the disparity domain and therefore are restricted to a limited number of applications. In this study, we attempted to transcend this limitation and analyzed how a reconstruction in color and brightness, as well as disparity and other important features, affects eyes in terms of vergence adaptation. As a result, we found that, the higher the color similarity is, the better it positively affects vergence adaptation during viewing. Based on this analysis, we propose in this paper a similar color extraction method between takes that are applicable to real-life situations. In an evaluation, the algorithm was applied to publicly available S3D contents and produced a converted color optimized image. The vergence adaptation time of this applied contents was significantly decreased. Also it was minimized through color reconstruction, thereby, being resulted in enhancing viewer concentration.

Content-Based Image Retrieval Using Visual Features and Fuzzy Integral (시각 특징과 퍼지 적분을 이용한 내용기반 영상 검색)

  • Song Young-Jun;Kim Nam;Kim Mi-Hye;Kim Dong-Woo
    • The Journal of the Korea Contents Association
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    • v.6 no.5
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    • pp.20-28
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    • 2006
  • This paper proposes visual-feature extraction for each band in wavelet domain with both spatial frequency features and multi resolution features, and the combination of visual features using fuzzy integral. In addition, it uses color feature expression method taking advantage of the frequency of the same color after color quantization for reducing quantization error, a disadvantage of the existing color histogram intersection method. Also, it is found that the final similarity can be represented in a linear combination of the respective factors(Homogram, color, energy) when each factor is independent one another. With respect to the combination patterns the fuzzy measurement is defined and the fuzzy integral is taken. Experiments are peformed on a database containing 1,000 color images. The proposed method gives better performance than the conventional method in both objective and subjective performance evaluation.

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The Brand Image Retrieval System Based on Color and Shape (컬러와 형태에 기반을 둔 상표 영상 검색 시스템)

  • Shin, Seong-Yoon;Pyo, Seong-Bae
    • Journal of the Korea Society of Computer and Information
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    • v.11 no.3
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    • pp.167-172
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    • 2006
  • An image retrieval system retrieves and offers same of similar image based on various features of image. This paper present a brand image retrieval system based on color and shape of image. We use the image for a color information by dividing into the area and extracting the area color distribution histogram. We use for the shape information by preprocessing of the boundary extraction, the centroid extraction, angular sampling etc. and calculating of the sum of the distance from the centroid to the boundary, the standard deviation, and the rate of long axis to short axis. We accomplish the retrieval through a similarity measurement by using the color and shape information which is extracted in this way.

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Similar Movie Retrieval using Low Peak Feature and Image Color (Low Peak Feature와 영상 Color를 이용한 유사 동영상 검색)

  • Chung, Myoung-Beom;Ko, Il-Ju
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.8
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    • pp.51-58
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    • 2009
  • In this paper. we propose search algorithm using Low Peak Feature of audio and image color value by which similar movies can be identified. Combing through entire video files for the purpose of recognizing and retrieving matching movies requires much time and memory space. Moreover, these methods still share a critical problem of erroneously recognizing as being different matching videos that have been altered only in resolution or converted merely with a different codec. Thus we present here a similar-video-retrieval method that relies on analysis of audio patterns, whose peak features are not greatly affected by changes in the resolution or codec used and image color values. which are used for similarity comparison. The method showed a 97.7% search success rate, given a set of 2,000 video files whose audio-bit-rate had been altered or were purposefully written in a different codec.

Image Retrieval Using Entropy-Based Image Segmentation (엔트로피에 기반한 영상분할을 이용한 영상검색)

  • Jang, Dong-Sik;Yoo, Hun-Woo;Kang, Ho-Jueng
    • Journal of Institute of Control, Robotics and Systems
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    • v.8 no.4
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    • pp.333-337
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    • 2002
  • A content-based image retrieval method using color, texture, and shape features is proposed in this paper. A region segmentation technique using PIM(Picture Information Measure) entropy is used for similarity indexing. For segmentation, a color image is first transformed to a gray image and it is divided into n$\times$n non-overlapping blocks. Entropy using PIM is obtained from each block. Adequate variance to perform good segmentation of images in the database is obtained heuristically. As variance increases up to some bound, objects within the image can be easily segmented from the background. Therefore, variance is a good indication for adequate image segmentation. For high variance image, the image is segmented into two regions-high and low entropy regions. In high entropy region, hue-saturation-intensity and canny edge histograms are used for image similarity calculation. For image having lower variance is well represented by global texture information. Experiments show that the proposed method displayed similar images at the average of 4th rank for top-10 retrieval case.

A Study on the Design Guide of Fee Charging Residential Facility for the Elderly reflected in Color Perception Characteristic (노인의 색지각적 특성을 고려한 유료 노인주거 실내공간의 설계지침에 관한 연구)

  • Song, Choon-Eui;Kim, Moon-Duck
    • Archives of design research
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    • v.20 no.3 s.71
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    • pp.247-256
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    • 2007
  • Aging brings color-weakness to the eye due to yellowed eye sight. The 87% of information required for human behavioral decisions are visually perceived. Therefore, the color-weakness will affect behavior in many ways. Most of previous research regarding color planning for the aged focuses on discovering their preferred colors and reflecting the colors on facility color planning. But such research failed to identify the confused range of color cognitions due to the color weakness of the aged. The purpose of this study is to propose a design guide for fee-charging residential facilities for the elderly, reflecting upon color perception characteristics. An experimental simulation on aged vision using the UV filter and Y-2 filter, YA-3 filter alternating for general eyesight, 70 year-old and late 80 year-old was conducted. The results of this study are as follow : color perception is changed by crystalline lens aging process and yellowed eye sight. The recognition arrangement of colors was preferred to contrast harmony rather than similarity harmony and the dominant color is a warm color rather than a cool color.

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A Study on the Attributes of Cultural Color in Korea and China - Focus on Traditional Performance - (한국과 중국 문화색채 특성 - 전통극을 중심으로 -)

  • Kim, Ji-Eon;Kim, Ji-Young
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.3
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    • pp.457-466
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    • 2009
  • The purpose of this study is to research the similarity and difference of color application in culture of Korea and China. The subject of this research is the costume color of Changgeuk and Beijing opera. First, a bibliographical inquiry includes the attributes of cultural color in Korea and China and the costume attributes of Changgeuk and Beijing opera. Second, this survey analyzes Munsell's 3 attributes(Hue, Value, Chroma), tone by extracted color data. The results of this study are as follows: 1. The cultural color factors of Korea and China are classified geographical factor, internal cultural factor and external cultural factor. 2. Changgeuk costume much more used high value and medium & low chroma for korean temperate climate. But Beijing opera costume prefers high-medium value and low chroma color, various ranges of color because of China huge land and various climates, as geographical factor. 3. Changgeuk costume much more used YR color(no-dyeing color) because of korean white robe preference. Beijing opera costume much more used R color than Changgeuk costume because of traditional preference of R color, as infernal cultural factor. 4. Changgeuk costume and Beijing opera costume show the practical use of ascetic cole. like as jade green. Ojungsaek much less used than Obangsaek by the theory of exponents of the five elements doctrine, as external cultural factor.

Selection of Beef Quality Factors Represented by Time-Temperature Integrator (TTI)

  • Kim, Eun-Ji;Kim, Kee-Hyuk;Jung, Seung-Won;Chung, Ku-Young;Lee, Seung-Ju
    • Food Science of Animal Resources
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    • v.32 no.5
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    • pp.598-603
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    • 2012
  • Beef qualities which can be properly predicted by time-temperature integrator (TTI), a chromatic indicator, were selected in terms of its similarity of temperature dependence between beef qualities and TTI, denoted by Arrhenius activation energy ($E_a$). The high similarity is required to afford accurate prediction. A devised enzymatic TTI based on laccase (an oxidase), which catalyses the oxidation on 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) producing color development, was applied. The factors of beef quality, such as volatile basic nitrogen (VBN), pH, color (CIE $L^*$, $a^*$), Warner-Bratzler shear force (WBSF), Pseudomonas spp. count, and lactic acid bacteria (LAB) count were considered for the selection. $E_a$ (55.48 kJ/mol) of the TTI was found to be similar to those of the beef qualities (all referred) in the order of LAB count (53.54 kJ/mol), CIE $a^*$ value (61.86 kJ/mol), pH (65.51 kJ/mol), Pseudomonas spp. Count (44.54 kJ/mol), VBN (67.98 kJ/mol), WBSF (40.67 kJ/mol), and CIE $L^*$ value (33.72 kJ/mol). The beef qualities with more similar $E_a$ to that of the TTI showed less difference between real and TTI predicted levels. In conclusion, it was found out that when applying TTI to food packages, their $E_a$ similarity should be checked to assure accurate estimation of food quality levels from TTI response.

Visualization System for Dance Movement Feedback using MediaPipe (MediaPipe를 활용한 춤동작 피드백 시각화 시스템)

  • Hyeon-Seo Kim;Jae-Yeung Jeong;Bong-Jun Choi;Mi-Kyeong Moon
    • The Journal of the Korea institute of electronic communication sciences
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    • v.19 no.1
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    • pp.217-224
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    • 2024
  • With the rapid growth of K-POP, the dance content industry is spreading. With the recent increase in the spread of SNS, they also shoot and share their dance videos. However, it is not easy for dance beginners who are new to dancing to learn dance moves because it is difficult to receive objective feedback when dancing alone while watching videos. This paper describes a system that uses MediaPipe to compare choreography videos and dance videos of users and detect whether they are following the movement correctly. This study proposes a method of giving feedback based on Color Map to users by calculating the similarity of dance movements between user images taken with webcam or camera and choreography images using cosine similarity and COCO OKS. Through this system, objective feedback on users' dance movements can be visually received, and beginners are expected to be able to learn accurate dance movements.

Similar Satellite Image Search using SIFT (SIFT를 이용한 유사 위성 영상 검색)

  • Kim, Jung-Bum;Chung, Chin-Wan;Kim, Deok-Hwan;Kim, Sang-Hee;Lee, Seok-Lyong
    • Journal of KIISE:Databases
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    • v.35 no.5
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    • pp.379-390
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    • 2008
  • Due to the increase of the amount of image data, the demand for searching similar images is continuously increasing. Therefore, many researches about the content-based image retrieval (CBIR) are conducted to search similar images effectively. In CBIR, it uses image contents such as color, shape, and texture for more effective retrieval. However, when we apply CBIR to satellite images which are complex and pose the difficulty in using color information, we can have trouble to get a good retrieval result. Since it is difficult to use color information of satellite images, we need image segmentation to use shape information by separating the shape of an object in a satellite image. However, because satellite images are complex, image segmentation is hard and poor image segmentation results in poor retrieval results. In this paper, we propose a new approach to search similar images without image segmentation for satellite images. To do a similarity search without image segmentation, we define a similarity of an image by considering SIFT keypoint descriptors which doesn't require image segmentation. Experimental results show that the proposed approach more effectively searches similar satellite images which are complex and pose the difficulty in using color information.