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- Title
Multi-exposure image fusion based on wavelet transform.
- Authors
Zhang, Wenlong; Liu, Xiaolin; Wang, Wuchao; Zeng, Yujun
- Abstract
This article proposes a novel wavelet-based algorithm for the fusion of multi-exposed images. The luminance inversion is suppressed and the contrast of the fused image is enhanced, by introducing the brightness of input images into the well-exposedness weight. The weight is used to fuse the approximate sub-bands of input images in the wavelet domain. At the same time, the detail sub-bands of input images are fused by the adjusted contrast weight to avoid losing details around the strong edges. Besides, a novel enhancement function was proposed to enhance the details of the fused image. The proposed multi-exposure fusion scheme consists of three steps: (1) transforming the input images into YUV space and fusing the color-difference components U and V according to the saturation weight; (2) transforming the luminance component Y into the wavelet domain and fusing the corresponding approximate sub-bands and detail sub-bands by the well-exposedness weight and adjusted contrast weight, respectively; and (3) transforming the fused image back into RGB space to obtain the final result. The experiments illustrate that the proposed method is able to effectively preserve details, enhance contrast, and maintain consistency with the luminance distribution of input images.
- Subjects
HIGH dynamic range imaging; DIGITAL cameras; LUMINANCE (Photometry); IMAGING systems; WAVELETS (Mathematics)
- Publication
International Journal of Advanced Robotic Systems, 2018, Vol 15, Issue 2, p1
- ISSN
1729-8806
- Publication type
Article
- DOI
10.1177/1729881418768939