• Journal of Distribution Research
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• v.9 no.2
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• pp.101-122
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• 2004

In this study, two alternative models are developed and tested in order to investigate the relationship between retailer image and its private brand attitude. The halo effect model hypothesizes that retailer image is related as a halo in private brand evaluation and the summary construct model hypothesizes that retailer image functions as a summary construct of private brand evaluation. The results indicate there are moderating effects of 1) familiarity with a private brand and 2) the characteristics of a product category High familiarity is related with the summary construct model and low familiarity the halo effect model. In private brand food, the summary construct model fits better and explains more adequately that private brand evaluation influences retailer image as a summary construct. In private brand clothes, however, the halo effect model performs better in explaining the relationship between retailer image and private brand attitude.

• Journal of Convergence for Information Technology
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• v.9 no.8
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• pp.123-133
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• 2019

This research empirically investigated halo effect in evaluating culture and art performance program. We diagnosed halo effect by using correlation analysis, factor analysis, and regression model on results and scores of fifteen evaluation indicators within three categories for the 107 Local Representative Performance Art Festivals in 2014 and 2015. The results indicates strong possibility of halo effect in culture and art performance evaluation. The correlation coefficients between evaluation indicators is higher than 0.5 and factor structure does not match with evaluation categories in both years. Scores in categories and standard deviations also are also significantly correlated with each other. The results implies that more sophisticated standard, diversification of evaluator, education, and meta-anlysis are need to control halo effect.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.326-329
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• 2011

안개나 스모그 등으로 인한 영상의 왜곡에 대해 Dark Channel Prior 를 이용해 안개제거를 하면 깨끗한 결과 영상을 얻을 수 있다. 하지만 이 기법에서 전달량을 정련할 때 많은 시간이 걸리는데 계산 속도 면을 개선하기 위해 Gaussian Filter 를 사용해 정련한다. 이 때 단순한 Gaussian Filter 를 사용하게 되면 결과영상에서 후광효과가 생기게 된다. 후광효과를 줄이기 위해 본 논문에서 제안한 적응 Gaussian Filter 를 사용해 영상을 복원시킨다.

• Journal of Korea Multimedia Society
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• v.16 no.1
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• pp.29-41
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• 2013

The digital camera is impossible to preserve the appearance of a scene containing high dynamic range due to a limitations of the sensing hardware. The Retinex was proposed on the purpose to solve these problems. While the Retinex enhances visibility and color constancy, it sometimes suffers from color distortion, halo effect and reduced global contrast. This paper presents an advanced Retinex algorithm working on the YCbCr color coordinate to reduce the processing time and to improve the global contrast and color. Simulation results show that our algorithm significantly reduces the total processing time, and provide the superior result image by improving the global contrast and color consistency as well as by reducing the halo effect around the boundaries.

• The Korean Publising Journal, Monthly
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• s.308
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• pp.12-12
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• 2001

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.55-58
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• 2017

본 논문에서는 넓은 동적 영역(High Dynamic Range: HDR) 이미지에 지역 엣지 보존 필터를 적용한 개선된 다중 스케일 톤 매핑 기법을 제안하고자 한다. 기존 알고리듬의 다중 스케일 분해 과정에서는 과도하게 많은 정보를 보존하여 결과 이미지가 비현실적으로 표현되고 일부 테스트 이미지에서는 화소 값 변화량이 큰 엣지 영역에서 후광 효과가 발생하는 단점이 있다. 본 논문에서는 기존 알고리듬의 다중 스케일 분해 과정을 개선하여 엣지를 적절히 보존함으로써 후광 효과를 제거함과 동시에 주관적 화질을 향상시켰다.

• Digital Contents
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• no.7 s.158
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• pp.80-81
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• 2006

지난 한달은 월드컵열기로 인해 게임산업이 상대적으로 위축된 모습을 보였다. 그러나 이와중에서도 네오위즈가 선보인 <피파온라인>은 승승장구하며 월드컵의 후광효과를 톡톡히 누렸던 것으로 나타났다.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.10-18
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• 2009

Color rendition method is necessary for improving the low contrast images which are achieved by PDA, mobile phone camera or PC camera. There are some methods for color rendition. However, after correcting the color, image quality degradations, such as graying-out, halo-artifact and color noise, may occur. In order to overcome these problems, this paper proposes a retinex-based color rendition method. The proposed method uses the HSV color coordinate system to avoid the graying-out, and the advanced image formation model to reduce the halo-artifact in which the image is divided into three components as the global illumination, the local illumination, and reflectance. The experiment results show that the proposed method yields better performance of color correction over the conveniently method.

• Journal of Broadcast Engineering
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• v.20 no.5
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• pp.697-705
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• 2015

This paper proposes a high-speed and high-quality haze removal method based on dual dark channels. In the conventional method, the halo artifacts are suppressed by the additional transmission refinement, but the transmission refinement is computationally intensive and the quality of the haze removal is sometimes unsatisfactory because of the residual halo artifacts. In the proposed method, the transmission is estimated with the mixture of the two dark channels with different window size. By mixing the two dark channels so as to avoid the halo artifacts, the proposed method realizes a high-quality haze removal even without the transmission refinement. Experimental results demonstrate that the quality of the results by the proposed method is superior to those by the conventional method and the speed of the haze removal is about 14.2 times higher than that of the conventional method.

• Journal of Public Diplomacy
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• v.2 no.2
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• pp.53-80
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• 2022

Despite an astronomical budget for public diplomacy, China is experiencing successive failures in public diplomacy. The unfavorable feeling towards China is increasing every year in the world and China needs a new public diplomacy to resolve anti-Chinese sentiment. Here, we found that viewers of Korean-Chinese student YouTuber Deemd formed a friendly image towards China after watching Deemd's China vlog. Therefore, in this study, we tried to examine whether Deemd's vlogs affect the improvement of China's country image theoretically guided by the theory of mere exposure effect. In addition, we examined whether the improvement of a country image causes the 'Halo effect' that leads to an increase in the intention to visit China and purchase intention of Chinese products. It is expected that the results of this study can serve as a new digital media diplomacy solution for countries, including China, that want to capture the hearts of foreign public in the era of a new digital public diplomacy.