가변적 감마 계수를 이용한 노출융합기반 단일영상 HDR기법A HDR Algorithm for Single Image Based on Exposure Fusion Using Variable Gamma Coeffici
- Other Titles
- A HDR Algorithm for Single Image Based on Exposure Fusion Using Variable Gamma Coeffici
- Authors
- 한규필
- Issue Date
- Aug-2021
- Publisher
- 한국멀티미디어학회
- Keywords
- High Dynamic Range; Exposure Fusion; Gamma Correction; Tone Mapping; Histogram Modification
- Citation
- 멀티미디어학회논문지, v.24, no.8, pp 1059 - 1067
- Pages
- 9
- Journal Title
- 멀티미디어학회논문지
- Volume
- 24
- Number
- 8
- Start Page
- 1059
- End Page
- 1067
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/25380
- ISSN
- 1229-7771
- Abstract
- In this paper, a HDR algorithm for a single image is proposed using the exposure fusion, that adaptively calculates gamma correction coefficients according to the image distribution. Since typical HDR methods should use at least three images with different exposure values at the same scene, the main problem was that they could not be applied at the single shot image. Thus, HDR enhancements based on a single image using tone mapping and histogram modifications were recently presented, but these created some location-specific noises due to improper corrections. Therefore, the proposed algorithm calculates proper gamma coefficients according to the distribution of the input image and generates different exposure images which are corrected by the dark and the bright region stretching. A HDR image reproduction controlling exposure fusion weights among the gamma corrected and the original pixels is presented. As the result, the proposed algorithm can reduce certain noises at both the flat and the edge areas and obtain subjectively superior image quality to that of conventional methods.
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Collections - Department of Computer Engineering > 1. Journal Articles
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