Table 2 Performance comparison of the proposed SA-optimized sensing matrix with Basis Pursuit (BP) and OMP algorithms, for compression RATIO CR (N/M) =0.5
From: Application of compressed sensing for image compression based on optimized Toeplitz sensing matrices
Method used | Proposed SA-optimized sensing matrices with BP and OMP | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Test images | Boat.bmp | Barbara.bmp | Mandrill.jpg | ||||||
Sensing methods and performance measures | Non-optimized Toeplitz with BP | SA-optimized Toeplitz with BP | SA-optimized Toeplitz with OMP | Non-optimized Toeplitz with BP | SA-optimized Toeplitz with BP | SA-optimized Toeplitz with OMP | Non-optimized Toeplitz with BP | SA-optimized Toeplitz with BP | SA-optimized Toeplitz with OMP |
Mutual coherence | 6.9924 | 5.9980 | 5.9980 | 6.9924 | 5.9980 | 5.9980 | 6.9924 | 5.9980 | 5.9980 |
PSNR (dB) | 59.1519 | 59.6774 | 51.7711 | 62.9252 | 64.0669 | 56.5992 | 55.0343 | 55.9813 | 49.3189 |
MSE | 175.4469 | 166.4657 | 367.0214 | 120.3017 | 107.3225 | 226.4691 | 264.8315 | 240.9038 | 469.0175 |
Reconstruction Time (seconds) | 27.4589 | 14.7229 | 3.6900 | 15.3074 | 14.4771 | 3.8618 | 13.3598 | 13.3078 | 3.7477 |
Sensing matrix construction time | 0.0045 | 0.0045 | 0.0014 | 0.0047 | 0.0047 | 0.0015 | 0.0044 | 0.0044 | 0.0015 |