Compressed Sensing Image Reconstruction Based on Convolutional Neural Network

• Main Authors: Yuhong Liu, Shuying Liu, Cuiran Li, Danfeng Yang
• Format: Article
• Language: English
• Published: Atlantis Press 2019-01-01
• Series: International Journal of Computational Intelligence Systems
• Subjects: Image reconstruction; Compressed sensing; CNN; Reconstruction accuracy; PSNR
• Online Access: https://www.atlantis-press.com/article/125916709/view

Compressed sensing theory is widely used in image and video signal processing because of its low coding complexity, resource saving, and strong anti-interference ability. Although the compression sensing theory solves the problems brought by the traditional signal processing methods to a certain extent, it also encounters some new problems: the reconstruction time is long and the algorithm complexity is high. In order to solve these problems and further improve the quality of image processing, a new convolutional neural network structure CombNet is proposed, which uses the measured value of compression sensing as the input of the convolutional neural network, and connects a complete connection layer to get the final Output. Experiments show that CombNet has lower complexity and better recovery performance. At the same sampling rate, the peak signal-to-noise ratio (PSNR) is 12.79%–52.67% higher than Tval3 PSNR, 16.31%–158.37% higher than D-AMP, 1.00%–3.79% higher than DR2-Net, and 0.06%–2.60% higher than FCMN. It still has good visual appeal when the sampling rate is very low (0.01).