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Multi-scale guided filter and its application in image dehazing
Wu, K.; G.-L. Han; H. Yang; Y.-Q. Wang and X.-T. Wu
2017
Source PublicationGuangxue Jingmi Gongcheng/Optics and Precision Engineering
Volume25Issue:8
AbstractWith combining guided filter and lifting wavelet effectively, a multi-scale guided filter was proposed to smooth the details of a color image and to keep the edges of the image unambiguous. The lifting wavelet was used to decompose the color image in multi-scale. It means that the image was decomposed into a low frequency subband and a plurality of high frequency subbands. In the reconstruction process of the lifting wavelet, the low-frequency information of each scale was smoothed by the guide filter and the edges were not blurred. Finally, the reconstructed image was processed by the guided filter once more to remove the residual details as soon as possible. The proposed multi-scale guided filter method was applied to the image haze removal using dark channel prior and its processing results were evaluated in subjectivity and objectivity. The results show that the multi-scale guided filter smoothes the image's details and maintains the edge integrity. It improves the visual effect of the image in whole, enhances the image contrast and visual effect. Moreover, it recovers the scene information and preserves the edge information of the scene. At the same time, the objective evaluation indexes are improved, in which, the contrast enhancement coefficient index is improved by 0.1 or more, the restoration ability of the scene structure information is increased by more than 1 and the Light Order error (LOE) is reduced by more than 10.It satisfies the visual needs of the application in image dehazing. 2017, Science Press. All right reserved.
Indexed Byei
Language中文
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59321
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Wu, K.,G.-L. Han,H. Yang,et al. Multi-scale guided filter and its application in image dehazing[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(8).
APA Wu, K.,G.-L. Han,H. Yang,&Y.-Q. Wang and X.-T. Wu.(2017).Multi-scale guided filter and its application in image dehazing.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(8).
MLA Wu, K.,et al."Multi-scale guided filter and its application in image dehazing".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.8(2017).
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