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엔트로피 연산자를 이용한 영상 해싱 기반 인식자 (Image Hashing based Identifier with Entropy Operator)

  • 박제호
    • 반도체디스플레이기술학회지
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    • 제20권3호
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    • pp.93-96
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    • 2021
  • The desire for a technology that can mechanically acquire 2D images starting with the manual method of drawing has been making possible a wide range of modern image-based technologies and applications over a period. Moreover, this trend of the utilization of image-related technology as well as image-based information is likely to continue. Naturally, as like other technology areas, the function that humans produce and utilize by using images needs to be automated by using computing-based technologies. Surprisingly, technology using images in the future will be able to discover knowledge that humans have never known before through the information-related process that enables new perception, far beyond the scope of use that human has used before. Regarding this trend, the manipulation and configuration of massively distributed image database system is strongly demanded. In this paper, we discuss image identifier production methods based on the utilization of the image hashing technique which especially puts emphasis over an entropy operator.

의복 구매시 정보 탐색 활동에 관한 연구 -자아 이미지와 추구 편익을 중심으로- (A Study on the Information Search Behavior Emphasis on the Self-image and Benefit -)

  • 임경복
    • 한국의류학회지
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    • 제22권1호
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    • pp.61-71
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    • 1998
  • The purpose of this study was to identify the factors which explain consumer's information search behavior. Data were analyzed by utilizing factor analysis and multiple-regression to investigate the relationship among information sources, benefit, and actual and ideal self- image and demographics. Based on the results, information sources for benefit, actual and ideal self-image were developed. Predictors of information sources, benefits, and self-image were identified. Marketing implication about information sources were discussed. The results were as follows. 1. Actual and ideal self-images and information sources were devised into three factors. And benefits were devised into five factors. 2. Actual self-image has more predicting power than ideal self-image to the benefits which consumer sought. Among five benefits, character pursuit was the best predicted factor according to the self-image. 3. Among three information sources, mass communication was the most effective source which can be explained by the benefit and self-image. Fashion pursuit factor was the most significant factor to the mass communication oriented source.

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Analysis of Voter's Acceptance to Female Politician's Appearance

  • Kwon, Tae-Soon;Yang, Cheui-Kyung
    • 패션비즈니스
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    • 제8권6호
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    • pp.103-112
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    • 2004
  • A Politician Appearance Acceptance Model (PAAM model) was formed and designed based on an analysis of how the electorate would accept a female politician. The PAAM model evaluated factors which influenced the voter's view of the female politician based on appearance. Causative factors were assessed that impacted acceptance based on appearance and analyzed whether voting was influenced by the appearance image; appearance image preferences for a female politician included the classic, dramatic, romantic and natural images. Through validations, the appearance image and competency had a causative factor that contributed to the acceptance of the politician image. The Classic Image demonstrated the strongest and most important image among the appearance images. As voters were more interested in the appearance image of a female politician, more emphasis and weight was on the appearance image during the voting selection process.

발산 방향성 강조 대칭변환을 이용한 표적 검출 (Target extraction using divergent-direction-emphasis symmetry transform)

  • 전준형;이희열;최병재;박길흠
    • 한국지능시스템학회논문지
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    • 제20권5호
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    • pp.665-671
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    • 2010
  • 본 논문은 FLIR(forward looking infra-red) 영상에서 효과적인 표적검출이 가능하도록 명도값의 변화방향이 발산하는 경우의 대칭성을 강조한 발산 방향성 강조 대칭변환(DDEGST, divergent-direction-emphasis generalized symmetry transform)을 제안한다. 제안된 방안에서는 명도값의 변화방향이 발산하는 경우의 대칭도가 강조 될 수 있도록 일반화 대칭변환의 위상 가중함수를 여현함수 대신 지수함수를 사용해서 표적의 명도값이 배경에 비해 상대적으로 크게 나타나는 FLIR 영상에서 효과적인 표적 검출이 가능하도록 한다. 제안한 표적 검출 방안의 성능을 평가하기 위해, 실험에서는 기존의 GST 변환 방법과 제안 방법을 비교, 분석한다. 제안 방법이 FLIR 영상에서 우수한 성능을 가짐을 증명한다.

영상 영역화를 이용한 영상 부호화 기법 (An Image Coding Technique Using the Image Segmentation)

  • 정철호;이상욱;박래홍
    • 대한전자공학회논문지
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    • 제24권5호
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    • pp.914-922
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    • 1987
  • An image coding technique based on a segmentation, which utilizes a simplified description of regions composing an image, is investigated in this paper. The proposed coding technique consists of 3 stages: segmentation, contour coding. In this paper, emphasis was given to texture coding in order to improve a quality of an image. Split-and-merge method was employed for a segmentation. In the texture coding, a linear predictive coding(LPC), along with approximation technique based on a two-dimensional polynomial function was used to encode texture components. Depending on a size of region and a mean square error between an original and a reconstructed image, appropriate texture coding techniques were determined. A computer simulation on natural images indicates that an acceptable image quality at a compression ratio as high as 15-25 could be obtained. In comparison with a discrete cosine transform coding technique, which is the most typical coding technique in the first-generation coding, the proposed scheme leads to a better quality at compression ratio higher than 15-20.

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브랜드이미지와 자아이미지가 제품 선택시 미치는 영향에 관한 연구 (A Study on the Effect of Congruence between Brand-Image and Self-Image to the Preference of Product Purchase)

  • 김영일;윤차영;김현종
    • 산학경영연구
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    • 제17권
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    • pp.83-110
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    • 2004
  • 브랜드 이미지와 자아이미지가 제품구매 선호에 어떠한 영향을 미치는가를 살펴 본 결과 브랜드 이미지는 제품의 물적 속성과 상징적 의미를 공유하였으며 이러한 상징은 구매하는 사람의 의미를 다른 사람에게 커뮤니케이션 하는 역할이 될 수 있는 것으로 나타났다. 또한 개성을 갖기도 하는데 특히 소비자들의 기억 속에 자리 잡은 브랜드이미지는 구매의사결정 과정 중 대안 평가 단계에 영향을 미침으로써 지속적 반복적 구매 여부의 결정 요인이 되고 있다. 브랜드는 제품의 물적 속성과 아울러 상징적 의미에 의해 그 이미지가 형성되며 제품이 상징적 의미로 사용될 경우에는 그 물적 특성보다는 소비자의 가치 체계가 더 많이 작용한다. 제품 자체가 상징적 의미로 사용될 때 브랜드이미지의 형성은 소비자의 가치체계에 초점을 맞춤으로써 효과적으로 소비자에게 소구 할 수 있을 것으로 판단된다. 소비자의 가치체계 준거의 틀로서의 자아이미지는 스스로에 대한 주관적이고 객관적인 지각이며 소비자와 관련하여 의식적 혹은 무의식적으로 또는 적극적 소극적으로 자아이미지를 유지 고양하기 위해 노력하는데 이는 소비자의 구매의사 결정 과정에서 자아이미지가 영향을 미친다는 것을 의미한다.

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TFT-LCD 영상에서 누적히스토그램을 이용한 STD 결함검출 알고리즘 (STD Defect Detection Algorithm by Using Cumulative Histogram in TFT-LCD Image)

  • 이승민;박길흠
    • 한국멀티미디어학회논문지
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    • 제19권8호
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    • pp.1288-1296
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    • 2016
  • The reliable detection of the limited defect in TFT-LCD images is difficult due to the small intensity difference with the background. However, the proposed detection method reliably detects the limited defect by enhancing the TFT-LCD image based on the cumulative histogram and then detecting the defect through the mean and standard deviation of the enhanced image. Notably, an image enhancement using a cumulative histogram increases the intensity contrast between the background and the limited defect, which then allows defects to be detected by using the mean and standard deviation of the enhanced image. Furthermore, through the comparison with the histogram equalization, we confirm that the proposed algorithm suppresses the emphasis of the noise. Experimental comparative results using real TFT-LCD images and pseudo images show that the proposed method detects the limited defect more reliably than conventional methods.

Experimental characterization of a smart material via DIC

  • Casciati, Sara;Bortoluzzi, Daniele;Faravelli, Lucia;Rosadini, Luca
    • Smart Structures and Systems
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    • 제30권3호
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    • pp.255-261
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    • 2022
  • When no extensometer is available in a generic tensile-compression test carried out by a universal testing machine (for instance the model BIONIX from Material Testing Systems (MTS)), the test results only provide the relative displacement between the machine grips. The test does not provide any information on the local behaviour of the material. This contribution presents the potential of an application of Digital Image Correlation (DIC) toward the reconstruction of the behaviour along the specimen. In particular, the authors test a Ni-Ti shape memory alloys (SMA) specimen with emphasis on the coupling of the two measurement techniques.

의복스타일 선호에 신체만족도와 이성적인 신체이미지의 중요성이 미치는 영향 연구 (Effects of Body-Cathexis and Importance of Meeting the Ideal Body Image on Clothing Style Preferences)

  • 황진숙
    • 자연과학논문집
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    • 제11권1호
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    • pp.165-171
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    • 1999
  • 본 연구의 목적은 의복 스타일 선호에 신체만족도와 이상적인 신체이미지의 중요성이 미치는 영향을 규명하는 것이다. 신체만족도와 이성적인 신체이미지의 중요성은 신체 5부위(얼굴, 상체, 하체, 신장, 체중) 각각에 대해 측정되었고, 의복스타일 선호는 섹시스타일에 대한 선호, 타이트한 정도에 대한 선호, 어두운 색상에 대한 선호, 허리 강조에 대한 선호로 측정되었다. 결과로 특정 부위에 대한 신체만족도와 이상적인 신체이미지의 중요성은 그 부위에 관련된 의복스타일 선호와 관계가 있었다.

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대학캠퍼스 건축물에 대한 이미지평가에 관한 연구 (A Study on the Image Evaluation of Buildings in the University Campus)

  • 김천일;김익환
    • 교육시설 논문지
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    • 제19권3호
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    • pp.13-20
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    • 2012
  • In this study, we performed the psychological analysis on campus facilities for university students with the observation that the evaluation on the physical environment of the campus is related to the image evaluation of the campus users. Specifically, we investigated the cognitive structure and the image evaluation structure of users, i.e., students, on the architectural and morphological elements of campus buildings. The investigation results are summarized as follows. 1) The cognitive structure of students on the architectural and morphological elements was different from building to building. In the case of architectural elements, the campus buildings were rated high, if they were designed with emphasis on symbolic elements, while the campus buildings with simple design were rated low. However, the morphological elements exhibited the opposite results. 2) We extracted six factors by performing the factor analysis for image evaluation. From the analysis results, we found that students showed a different structure of image evaluation for each building. In addition, the image evaluation structures were found to be related with the cognitive structures on architectural and morphological elements. 3) We also performed the correlation analysis between image evaluation structure and cognitive structure on architectural and morphological aspects. The analysis results indicated that each building showed different correlation patterns. In addition, the overall image became better, as they appraised "clarity" and "uniformity" more highly.