• 제목/요약/키워드: background difference image

검색결과 340건 처리시간 0.031초

A Study on the Preprocessing Method Using Construction of Watershed for Character Image segmentation

  • Nam Sang Yep;Choi Young Kyoo;Kwon Yun Jung;Lee Sung Chang
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2004년도 학술대회지
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    • pp.814-818
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    • 2004
  • Off-line handwritten character recognition is in difficulty of incomplete preprocessing because it has not dynamic and timing information besides has various handwriting, extreme overlap of the consonant and vowel and many error image of stroke. Consequently off-line handwritten character recognition needs to study about preprocessing of various methods such as binarization and thinning. This paper considers running time of watershed algorithm and the quality of resulting image as preprocessing For off-line handwritten Korean character recognition. So it proposes application of effective watershed algorithm for segmentation of character region and background region in gray level character image and segmentation function for binarization image and segmentation function for binarization by extracted watershed image. Besides it proposes thinning methods which effectively extracts skeleton through conditional test mask considering running time and quality. of skeleton, estimates efficiency of existing methods and this paper's methods as running time and quality. Watershed image conversion uses prewitt operator for gradient image conversion, extracts local minima considering 8-neighborhood pixel. And methods by using difference of mean value is used in region merging step, Converted watershed image by means of this methods separates effectively character region and background region applying to segmentation function. Average execution time on the previous method was 2.16 second and on this paper method was 1.72 second. We prove that this paper's method removed noise effectively with overlap stroke as compared with the previous method.

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교량경관의 이미지 및 시각적 선호도 분석 - 배경경관 및 교량형태를 중심으로 - (Analysis on the Image and Visual Preference of Bridge Landscapes - A Focus on Background Landscape and Bridge Type -)

  • 정성관;채소정;김경태;이우성;박경훈;유주한
    • 한국조경학회지
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    • 제35권5호
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    • pp.82-91
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    • 2007
  • Currently, bridges are regarding as the structure with formative, scenic and environmental values more than their function as simple passageways. Because an attempt to work on the diversity of the bridge types and installation of the large structures on bridge are part of the project of the regional amenity enterprises, a study that harmonizes bridges with landscape is needed at this point in time. This background can influence the direction of bridge landscapes that considers local features by analysis of visual preferences on a bridge simulated scene. The results were as follows: analyzing the change of the simulated landscape image, forest landscape are damaged by the input of a bridge which was natural, harmonic and intimate. On the other hand, when a bridge was inserted into the ocean landscape, it was thought to improve the ocean landscape, especially, upper part form of arch bridge various or suspension bridge were improved in polished and various image. The insertion of a bridge into an urban landscape change from a negative image to a beautiful, harmonic and attractive image. The intimate, harmonic and natural image of a rural landscape was damaged by inserting a bridge. As analysis result about change of landscape preference by input of bridge, there is difference between before and after as input the bridge, and bridge influences as main object in the simulated scene. Visual preference was the highest in the ocean landscape, and the lowest in the suspension bridge in the rural landscape. The complicated shape of bridge follows on the background type difference certainly appear. Thee simulated scene preference except the urban landscape of the simulated scene fell generally Especially, fall of preference of girder bridge in the forest and ocean landscape, suspension bridge in the rural landscape appeared notedly.

영화에 나타난 대한제국기 신여성 의상 이미지 - <가비>, , <그림자 살인>을 중심으로 - (Costume Images of New Woman in the Korean Empire Period in Films - Focused on Gabi, YMCA Baseball Team, and Private Eye (Geurimja Sarin) -)

  • 임소아;김순영;남윤자
    • 한국의류산업학회지
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    • 제16권4호
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    • pp.543-553
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    • 2014
  • This study analyzes the visual image and the symbolic image of the 'New Woman' main female characters' costumes in three films: , , and , set in the Korean Empire Period and filmed in the last 10 years. The findings are as follows. First, on the visual image by formative characteristics, Gibson girl style was reflected in Western costume design. Korean costume design is based on a traditional style (or modified in some parts). Second, the three films have the same historical background on the visual image by the fidelity of historical research; however, the fidelity of historical research differs and varies with the personality of characters or situations in the films. Third, all three films share the symbolic image by characteristics of characters and 'New Woman' aspect with the same historical background and 'New Woman' female character in common; however, the personality and 'New Woman' aspect of the characters were somewhat different. There was also a distinct difference in the symbolic image of Western and Korean costumes. Western and Korean costumes signify externality versus internality and denial versus the affirmation of national identity in ; dailiness versus ceremonialness and dynamics versus statics in ; and independence versus conformity and variability versus continuity in .

한글 수화의 실시간 인식 시스템의 구현 (Implementation of Real-time Recognition System for Korean Sign Language)

  • 한영환
    • 한국콘텐츠학회논문지
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    • 제5권4호
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    • pp.85-93
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    • 2005
  • 본 논문은 복잡한 배경에서 표식없는 손을 추적하여 한글 수화를 인식하는 시스템에 관한 것이다. 제안한 방법은 먼저 인접한 프레임간의 차 영상에 대하여 엔트로피를 측정한다. 큰 값을 갖는 영역에 대해 피부색에 가까운 분포를 갖는 색상 정보를 추출하여 배경 영상으로부터 손 영역만을 추출한다. 추출된 손 영역에 대해 윤곽선을 검출하고 개선된 무게중심 프로필(centroidal profile) 방법을 적용하여 수화를 인식한다. 6가지 모양의 수화를 사용한 실험결과 기존의 방법들과 달리 표식을 사용하지 않고도 복잡한 배경과 조명의 변화에서 안정적으로 수화를 인식할 수 있다. 또한 초당 15프레임 정도의 처리속도로 각 사람별로 95%이상, 각 수화별로 $90\sim100%$의 인식률을 얻을 수 있다.

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Motion-Based Background Subtraction without Geometric Computation in Dynamic Scenes

  • Kawamoto, Kazuhiko;Imiya, Atsushi;Hirota, Kaoru
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2003년도 ISIS 2003
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    • pp.559-562
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    • 2003
  • A motion-based background subtraction method without geometric computation is proposed, allowing that the camera is moving parallel to the ground plane with uniform velocity. The proposed method subtracts the background region from a given image by evaluating the difference between calculated and model Hows. This approach is insensitive to small errors of calculated optical flows. Furthermore, in order to tackle the significant errors, a strategy for incorporating a set of optical flows calculated over different frame intervals is presented. An experiment with two real image sequences, in which a static box or a moving toy car appears, to evaluate the performance in terms of accuracy under varying thresholds using a receiver operating characteristic (ROC) curve. The ROC curves show, in the best case, the figure-ground segmentation is done at 17.8 % in false positive fraction (FPF) and 71.3% in true positive fraction (TPF) for the static-object scene and also at 14.8% in FPF and 72.4% In TPF for the moving-object scene, regardless if the calculated optical flows contain significant errors of calculation.

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친환경 화장품 잡지 광고의 조형적 특성에 관한 연구 (Formative Characteristics of Magazine Advertisement in Eco-friendly Cosmetics)

  • 김명리;제기연;이경희
    • 복식문화연구
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    • 제19권1호
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    • pp.150-162
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    • 2011
  • Personal health and environment is being aimed recently to show increase in preferences of eco-friendly cosmetics with longing of clean nature, and environment on pure plant ingredients. This study has the purpose of inquiring components and types of magazine advertisement in eco-friendly cosmetics and to analyze the model characteristics. The standards of analysis were classified as product, face, background, article, arrangement of colors, image, and eco-friendly factors. The results of this study are as follow. First, in inquiring the general characteristics of the magazine advertisement in eco-friendly cosmetics, the results were shown as the order of attention on product, face, background, article, arrangement of colors, image and eco-friendly factors. Second, in inquiring the components and types of magazine advertisement in eco-friendly cosmetics, the results showed an attentive difference in product, face, background, article, arrangement of colors and eco-friendly factors. Third, in inquiring relationships of model characteristics between domestic and foreign eco-friendly cosmetics, the results showed lots of domestic cosmetics advertising direct advertising, product type emerged was a lot of character type emerged. International cosmetics advertising, indirect advertising and highlighting the many articles that appeared prominently type is characterized.

특징 기반 다중 물체 추적 시스템에 관한 연구 (A Study on a Feature-based Multiple Objects Tracking System)

  • 이상욱;설성욱;남기곤;권태하
    • 전자공학회논문지S
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    • 제36S권11호
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    • pp.95-101
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    • 1999
  • 본 논문은 연속 영상에서 윤곽선과 특징을 이용하여 주위 환경 변화에 적응가능한 다중 물체 추적 방법을 제안한다. 적응 배경 모델을 사용하여 주위 환경 변화에 적응케 했으며, 물체 분할 모델은 배경 영상과 현재 영상의 차영상에서 국부 영상의 임계값 이상의 화소를 찾아 연결한 영역을 추출한다. 특징 추출과 물체인식모델은 탐색 창 내에서 발견된 다중 물체의 데이터 연상 문제를 해결하기 우해 사용되며, 실시간 추적을 위해 칼만 필터를 사용하였다. 제안된 방법을 도로 영상에 적용한 결과 다중 차량 추적이 정확히 이루어짐을 실험을 통해 보였다.

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의복원형의 외관과 맞음새를 위한 관능평가 방법에 대한 연구 (A Study on the Sensory Evaluation of Appearance and Fit for Basic Apparel Patterns)

  • 최미성
    • 한국의류학회지
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    • 제26권11호
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    • pp.1627-1637
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    • 2002
  • The objective of this study is to analyze the images of basic bodice apparel displayed on the PC monitor connected to digital camera, and to suggest a more efficient alternative method that enables the expert judge to evaluate the subject both traditional method and displayed images on the computer. Appearance evaluation has traditionally been assessed using subjective method dependent upon expertjudges' senses with the naked eye after direct observation of a living model. This research faces the new challenge focusing on the sensory evaluation of appearance for basic apparel patterns, which can overcome the space and time limitations of the traditional feet methods. A total fifteen basic bodice garment (3 types of $pattern\;{\times}\;5$ subject) were constructed with same fabrics. The appearance evaluation items consist of lg questions of upper torso. The image takes font, back and side view of the dressed subject with three different situations. Data was analyzed using percentiles, standard deviation T-test and ANOVA. Taken together, the present result of appearance evaluation through digital camera image shows that there is a significant difference ($p{\leq}.001$) in the response to the placement of the neckline, the waist & shoulder dart, the general ease of the bust & waist area, the side seam, the perpendicular of the waist hem and general acceptability between the above three different situations; the image in the condition of greenish yellow background with front light showed the highest score through all questions. These results depend on the kind of background colors with the light.

비트평면 정보를 사용한 새로운 2진 임계화 방법 (A New Binary Thresholding Method using Bit-plane Information)

  • 김하식;조남형;김윤호;이주신
    • 한국정보통신학회논문지
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    • 제5권6호
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    • pp.1169-1174
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    • 2001
  • 본 연구는 영상처리과정에서 중요한 이진영상의 전역임계값 결정을 위한 새로운 임계화 방법을 제안하였다. 제안한 알고리즘은 원 영상의 전체적인 윤곽을 가장 많이 포함하는 최상위 비트평면을 사용하여 영상을 중복되지 않는 두 영역으로 구분한 뒤, 두 영역의 평균 밝기 값의 차이로 임계값을 자동으로 결정하는 전역 임계화 방법이다. 실험결과 제안한 방법은 인위적인 초기값 설정을 필요로 하지 않으며, 처리과정이 간단하며 문서영상과 휘도영상의 영상 윤곽을 양호하게 보존하는 이진영상을 얻을 수 있었다.

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비젼에 의한 감성인식 (Emotion Recognition by Vision System)

  • 이상윤;오재흥;주영훈;심귀보
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2001년도 추계학술대회 학술발표 논문집
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    • pp.203-207
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    • 2001
  • In this Paper, we propose the neural network based emotion recognition method for intelligently recognizing the human's emotion using CCD color image. To do this, we first acquire the color image from the CCD camera, and then propose the method for recognizing the expression to be represented the structural correlation of man's feature Points(eyebrows, eye, nose, mouse) It is central technology that the Process of extract, separate and recognize correct data in the image. for representation is expressed by structural corelation of human's feature Points In the Proposed method, human's emotion is divided into four emotion (surprise, anger, happiness, sadness). Had separated complexion area using color-difference of color space by method that have separated background and human's face toughly to change such as external illumination in this paper. For this, we propose an algorithm to extract four feature Points from the face image acquired by the color CCD camera and find normalization face picture and some feature vectors from those. And then we apply back-prapagation algorithm to the secondary feature vector. Finally, we show the Practical application possibility of the proposed method.

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