Tree-Based Backtracking Orthogonal Matching Pursuit for Sparse Signal Reconstruction

Figure 3

Reconstruction signal by TBOMP algorithm.

(a) Original signal

(b) Wavelet coefficients of 4-level decompositions. The coefficients are arrayed as {𝑎₄,𝑑₄,𝑑₃,𝑑₂,𝑑₁}

(c) Wavelet coefficients recovery of the TBOMP algorithm