A Single Backlit Image Enhancement Method For Improvement Of Visibility Of Dark Part
- Resource Type
- Conference
- Authors
- Akai, Masato; Ueda, Yoshiaki; Koga, Takanori; Suetake, Noriaki
- Source
- 2021 IEEE International Conference on Image Processing (ICIP) Image Processing (ICIP), 2021 IEEE International Conference on. :1659-1663 Sep, 2021
- Subject
- Computing and Processing
Signal Processing and Analysis
Histograms
Conferences
Task analysis
Image enhancement
Backlit image
image enhancement
weight map
alpha blending
- Language
- ISSN
- 2381-8549
This study proposes a simple and fast backlit image enhancement method that improves the visibility of dark parts. The proposed method uses gamma correction and histogram equalization to make an intensity-adjusted image and a contrast-enhanced image, respectively. Then, an alpha-blended image of the two images is obtained. Finally, an output image is obtained by fusing the original image and the blended image using alpha blending to avoid causing artifacts in bright parts. The weight for fusion is calculated by using Otsu’s method and the guided filter. We verify the effectiveness of the proposed method through comparative experiments.