Haze image enhancement based on space fractional-order partial differential equation

Wendan Xue; Fengqun Zhao II

doi:10.1117/12.2281752

21 July 2017 Haze image enhancement based on space fractional-order partial differential equation

Wendan Xue, Fengqun Zhao II

Proceedings Volume 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017); 104202N (2017) https://doi.org/10.1117/12.2281752
Event: Ninth International Conference on Digital Image Processing (ICDIP 2017), 2017, Hong Kong, China

Abstract

Based on good amplitude frequency characteristics and the spatial global correlation of fractional-order differential, an energy functional of haze image enhancement is established by taking fractional derivative on both sides of the atmospheric physics scattering model, and a haze image enhancement model based on space fractional-order partial differential equation is obtained by using steepest descent method. Based on fast wavelet transform, the low-frequency part of patch transmission and the high-frequency part of point transmission are fused to estimate the transmission. Finally, the numerical solution of the fractional-order partial differential equation is obtained by the finite difference method. The experimental results show that the algorithm can improve the contrast, brightness and clarity of the image, and it is an effective image enhancement method for haze images.

Citation Download Citation

Wendan Xue and Fengqun Zhao II "Haze image enhancement based on space fractional-order partial differential equation", Proc. SPIE 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017), 104202N (21 July 2017); https://doi.org/10.1117/12.2281752

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