XUAN Yun-yi, YANG Chun-ling. Two-Stage Recursive Enhancement Reconstruction Based on Video Inter-frame Group Sparse Representation in Compressed Video Sensing[J]. Acta Electronica Sinica, 2021, 49(3): 435-442.
DOI:
XUAN Yun-yi, YANG Chun-ling. Two-Stage Recursive Enhancement Reconstruction Based on Video Inter-frame Group Sparse Representation in Compressed Video Sensing[J]. Acta Electronica Sinica, 2021, 49(3): 435-442. DOI: 10.12263/DZXB.20200272.
Two-Stage Recursive Enhancement Reconstruction Based on Video Inter-frame Group Sparse Representation in Compressed Video Sensing
The traditional iterative optimized based video compression sensing algorithms are limited by long running time and low adaptability of parameters
resulting in low practicability and generalization. Taking advantage of the powerful computing power
fast speed and learnable parameters of neural networks
this paper first proposes a group sparse representation network (VGSR-Net)
which maps the image block group to a higher-dimensional sparse domain through convolution
and uses a learnable threshold to denoise and extract inter-frame correlation. On this basis
a two-stage recursive enhance reconstruction network (2sRER-VGSR-Net) is proposed. First
we perform VGSR-Net to preliminarily enhance the initial reconstruction and then introduce STMC-Net as motion estimation
and the compensated frames are fed into the residual reconstruction network to further extract the missing detail and enhance the current frame. The second stage of reconstruction adopts a hybrid recursive structure with the aim of making full use of the existing better quality reconstructed frames. The simulation results show that the proposed algorithm improves the PSNR (Reak Signal to Noise Ratio) by 1.99dB compared with the existing state-of-art traditional compressed video sensing reconstruction algorithms SSIM-InterF-GSR
while improves the PSNR by 4.60dB with the comparation of the network-based algorithm CSVideoNet.