基于多残差网络的结构保持超分辨重建

针对图像超分辨率重建中几何结构扭曲和细节缺失等问题,文中提出基于多残差网络的结构保持超分辨重建算法.在小波变换域和梯度域上进行深度学习.文中算法包含3种残差网络.残差梯度网络用于结构及边缘信息的重建.残差小波变换网络从整体上进行图像高频信息的重建.残差通道注意力网络通过调整网络注意力,着重学习重要的通道特征,从局部恢复图像高频信息,提高重建效率.实验表明,文中算法在定量结果和视觉效果方面均取得较优表现.

Structure-Preserving Super-Resolution Reconstruction Based on Multi-residual Network

Aiming at the problems of geometric structure distortion and missing details in image super-resolution reconstruction,a structure-preserving super-resolution reconstruction algorithm based on multi-residual network is proposed.Deep learning is carried out in the wavelet transform domain and the gradient domain.Three kinds of residual networks are introduced.The structure and the edge information are reconstructed by the residual gradient network.The high-frequency information of the image is reconstructed as a whole by the residual wavelet transform network.The network attention is adjusted by the residual channel attention network,the important channel features are emphatically learned,and the high frequency information of the image is recovered locally.Experiments show that the proposed algorithm achieves better performance in both quantitative results and visual effects.