Line-based compressive sensing for low-power visual applications

Abstract: In this paper, a Line based Compressive Sensing (LCS) scheme is discussed and proposed for low power visual applications, in which image acquisition is performed in a line-by-line manner at the encoder side using same measurement operator. Such approach reduces the computational burden and makes the implementation process easier (at encoder) plus provides better and more efficient initial reconstruction (at decoder) than other CS techniques. The reconstruction algorithm is based on the combination of the conventional augmented Lagrangian method with variable splitting and alternating direction method and is referred as TV-AL3. The simulation results show that the proposed line based CS scheme not only improves the quality of image by 1dB to ~3dB at various subrates, when compared to the conventional CS schemes but also reduces the computational complexity at the encoder side.