Multi-structural signal recovery for biomedical compressive sensing

IEEE Trans Biomed Eng. 2013 Oct;60(10):2794-805. doi: 10.1109/TBME.2013.2264772. Epub 2013 May 23.

Abstract

Compressive sensing has shown significant promise in biomedical fields. It reconstructs a signal from sub-Nyquist random linear measurements. Classical methods only exploit the sparsity in one domain. A lot of biomedical signals have additional structures, such as multi-sparsity in different domains, piecewise smoothness, low rank, etc. We propose a framework to exploit all the available structure information. A new convex programming problem is generated with multiple convex structure-inducing constraints and the linear measurement fitting constraint. With additional a priori information for solving the underdetermined system, the signal recovery performance can be improved. In numerical experiments, we compare the proposed method with classical methods. Both simulated data and real-life biomedical data are used. Results show that the newly proposed method achieves better reconstruction accuracy performance in term of both L1 and L2 errors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms*
  • Animals
  • Computer Simulation
  • Data Compression / methods*
  • Humans
  • Models, Biological*
  • Monitoring, Physiologic / methods*