Multi-Feature-Based Bilinear CNN for Single Image Dehazing
Hui Xuan Fu, Bin Wu, Yanhua Shao · IEEE Access · 2019
Image dehazing has been a great challenge in the process of adjusting haze images. In this paper, an effective and accurate dehazing method based on atmospheric scattering model is proposed. Since the dark channel is not applicable to sky areas, single-threshold segmentation combined with quad-tree partition technique is adopted to position and estimate the ambient light A* rapidly and accurately. In order to optimize transmittance, we employ a new convolutional network architecture, multi-feature-based bilinear CNN, which can mitigate the halo effect around the abrupt edges and restrain image noise, and the whole transmittance estimation process can be divided into three main parts: feature extraction, nonlinear mapping, and image reconstruction. A large number of outdoor haze image test results show that our optimized method has better experimental results than the existing methods.