• Journal of Information Processing Systems
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• 제14권3호
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• pp.590-599
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• 2018

Multivariate finite mixture model is becoming more and more popular in image processing. Performing image denoising from image patches to the whole image has been widely studied and applied. However, there remains a problem that the structure information is always ignored when transforming the patch into the vector form. In this paper, we study the operator which extracts patches from image and then transforms them to the vector form. Then, we find that some pixels which should be continuous in the image patches are discontinuous in the vector. Due to the poor anti-noise and the loss of structure information, we propose a new operator which may keep more information when extracting image patches. We compare the new operator with the old one by performing image denoising in Expected Patch Log Likelihood (EPLL) method, and we obtain better results in both visual effect and the value of PSNR.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2000년도 춘계 학술대회 및 국제 감성공학 심포지움 논문집 Proceeding of the 2000 Spring Conference of KOSES and International Sensibility Ergonomics Symposium
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• pp.189-190
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• 2000

The purpose of this study is to estimate of design and ambience of goods by using 5 Kansei design items (shape, color, sense of material, fit, functionality/convenience). This paper describe that effectiveness of 5 Kansei design items. selecting image words and correspondence of 5 Kansei design items with image words. Kansei design items, selecting image words and correspondence of 5 Kansei design items with image words. (image words: the word describing about item image)

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.613-616
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• 2007

Characteristics of dark image retention and address discharge time lag were investigated simultaneously. It was found that reset waveforms with low black luminance did not guarantee lower image retention. Improved address discharge time lag due to modified reset waveforms similarly did not show improved image retention. The address discharge time lag and the image retention are in a trade-off relation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권3호
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• pp.1140-1154
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• 2015

Multiple Description (MD) coding is a promising alternative for the robust transmission of information over error-prone channels. Lattice vector quantization (LVQ) is a significant version of MD techniques to design an MD image coder. However, different from the traditional 2D texture image, the 3D depth image has its own special characteristics, which should be taken into account for efficient compression. In this paper, an optimized MDLVQ scheme is proposed in view of the characteristics of 3D depth image. First, due to the sparsity of depth image, the image blocks can be classified into edge blocks and smooth blocks, which are encoded by different modes. Furthermore, according to the boundary contents in edge blocks, the step size of LVQ can be regulated adaptively for each block. Experimental results validate the effectiveness of the proposed scheme, which show better rate distortion performance compared with the conventional MDLVQ.

• International Journal of Contents
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• 제14권3호
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• pp.1-6
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• 2018

For 3D display applications, auto-stereoscopic display methods that can provide 3D images without glasses have been actively developed. This paper is concerned with developing a display system for elemental images of real space using integral imaging. Unlike the conventional method, which reduces a color image to the level as much as a generated depth image does, we have minimized original color image data loss by generating an enlarged depth image with interpolation methods. Our method was efficiently implemented by applying a GPU parallel processing technique with OpenCL to rapidly generate a large amount of elemental image data. We also obtained experimental results for displaying higher quality integral imaging rather than one generated by previous methods.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.617-620
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• 2007

The temporal dark image sticking phenomena for both the face-to-face and coplanar sustain electrode structures were compared. For both structures, the temporal dark image sticking phenomena were examined by measuring the difference in the IR emission, display luminance, perceived luminance, and temperature between the image sticking and the no image sticking cells. For the face-to-face structure, the 10-min sustain discharge causes a small increment of the panel temperature thanks to the ITO-less electrode structure, thereby resulting in mitigating the temporal dark image sticking phenomenon.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1494-1496
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• 2007

This paper deals with image quality analysis considering the impact of psychological factors involved in assessment. The attributes of image quality requirement were partitioned according to the visual perception characteristics and the preference of image quality were obtained by the factor analysis method. The features of image quality which support the subjective preference were identified, The adequacy of image is evidenced to be the top requirement issues to the display image quality improvement.

• 한국패션뷰티학회지
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• 제2권3호
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• pp.83-95
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• 2004

In order to investigate female workers' recognition of image making, this study conducted a survey of female workers in Daegu and obtained results as follows. First, according to the result of analyzing recognition of image making, many of female workers, 82.3% of whom were between 20s and 40s, replied that they were 'pure and lively'(41.8%) or 'elegant and womanly'(32.3%) but what they sought for in their mind was an elegant and womanly image. However, the image that a majority of female workers wanted to have in the future was 'elegant and womanly' (53.3%) and 'sexy and attractive'(27.4%). This suggests that our society still demand women to be womanly as well as sexy and attractive. Second, with regard to outward image by age, most female workers regardless of age thought that outward image is important for social life. This suggests that younger women recognize more the influence of image and, consequently, the necessity of image making. Thus, the recognition of the importance of outward image appears to result in the proportional enhancement of the consciousness of image management. Third, younger women have a great difference between their current image and the image they seek for and such a difference may be related to mental immaturity between ideal and reality. Fourth, as for the relationship between image making and occupation, those who engaged in service and beauty art highly recognized the importance of image making as they were greatly influenced by their outward image in their social life.

• JSTS:Journal of Semiconductor Technology and Science
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• 제15권5호
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• pp.533-538
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• 2015

Thermal characterization of individual pixels in microbolometer infrared image sensors is needed for optimal design and improved performance. In this work, we used thermoreflectance microscopy on uncooled microbolometer image sensors to investigate the thermal characteristics of individual pixels. Two types of microbolometer image sensors with a shared-anchor structure were fabricated and thermally characterized at various biases and vacuum levels by measuring the temperature distribution on the surface of the microbolometers. The results show that thermoreflectance microscopy can be a useful thermal characterization tool for microbolometer image sensors.

• 한국과학교육학회지
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• 제38권5호
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• pp.753-763
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• 2018

학습자들이 갖고 있는 과학자 이미지는 과학학습이나 과학 관련 직업 선택에 중요한 영향을 미친다. 과학자의 이미지는 주로 그리기 분석법을 활용하여 분석하였다. 그리기 분석법은 그리는 것에 제한이 있어 주로 과학자의 외형적인 이미지를 분석하였다. 과학교사들이 갖고 있는 과학자의 이미지 및 과학 관련 직업에 대한 인식은 학생들의 과학학습이나 과학 관련 직업 선택에 중요한 요인이다. 하지만 과학교사들을 대상으로 하는 연구는 부족한 편이다. 따라서 이 연구의 목적은 의미분석법을 통해서 과학자 이미지 측정도구를 개발하고 적용하여 측정 도구의 유용성을 알아보고, 중등 예비 과학교사의 과학자 이미지 및 과학 관련 직업에 대한 인식을 조사하여 교육적 시사점을 논의하는 데 있다. 연구 대상은 사범대학교에서 과학교육을 전공하는 2, 3학년 남학생 79명, 여학생 55명 총 134명이다. 연구결과 과학자 이미지 측정도구는 '능력', '평가', '활동', '정서'의 4개 요소, 24문항으로 구성되었다. 개발한 측정도구를 활용하여 중등 예비 과학 교사들에게 적용한 결과 과학자의 '평가', '능력', '활동' 요소에 대한 이미지는 높은 반면에 '정서'는 낮은 것으로 나타났다. 성별에 따른 통계적인 유의미한 차이는 없었다. 과학 관련 직업에 대해서는 '힘들다', '전문적이다', '똑똑해야한다', '복잡하다' 등으로 인식하는 것으로 나타났다. 특히, 남학생들은 '힘들고 어렵다'라고 인식하는 반면 여학생들은 '도전적이고 복잡하다'라고 인식하는 것으로 나타났다. 끝으로 과학자 이미지 측정도구 활용의 유용성 및 중등 예비 과학교사들의 과학자 이미지, 과학 관련 직업에 대한 교육적 시사점을 논의하였다.