From: A novel quality assessment for visual secret sharing schemes
Metric | Symbol | Â | Â | Square | Â | Â |
---|---|---|---|---|---|---|
name | T | Letters | Baboon | sign | Portrait | Zebra |
Quality | Very | Â | Â | Very | Â | Â |
rank | good | Good | Fair | good | Good | Poor |
QBSD | 0.72 | 0.71 | 0.66 | 0.76 | 0.69 | 0.62 |
Blackness | 0.99 | 0.99 | 0.95 | 0.99 | 0.99 | 0.99 |
SSIM | 0.09 | 0.92 | 0.09 | 0.14 | 0.20 | 0.875 |
MSE | 4.3e4 | 0.2e4 | 3.3e4 | 4.1e4 | 3.6e4 | 3.5e3 |
PSNR | 1.76 | 14.01 | 2.99 | 2.04 | 2.61 | 12.62 |
Contrast | 0.251 | 0.262 | 0.270 | 0.251 | 0.251 | 0.31 |