stb-image-metrics demo
This utility compares two graphics files based on metrics.
Demo of stb-image-metrics.
Origin and Compare:
Metrcics:
stbimmetrics lena.png lena.quant444.png lena.quant444.psnr.png Load: lena.png image: 256x256:3 Load: lena.quant444.png image: 256x256:3 type: psnr metric: 18.663233 Save png: lena.quant444.psnr.png RGB mode:
| Name | Image metric | Value | UM |
|---|---|---|---|
| MSE |  | 0.013604 | 0.208771 |
| PSNR |  | 18.663233 | 0.470890 |
| SDSNR |  | 13.888971 | 0.454668 |
| Corelation |  | 0.953666 | 0.285007 |
| SSIM |  | 0.618509 | 0.050606 |
| VIFP1 |  | 0.170903 | 0.053111 |
| SMALLFRY |  | 83.753342 | 0.341786 |
| SHARPENBAD |  | 0.389942 | 0.138531 |
| NHW-C |  | 0.145290 | 0.422748 |
| NHW-N |  | 0.072673 | 0.550836 |
| NHW-R |  | 0.116387 | 0.381794 |
YCbCr mode:
| Name | Image metric | Value | UM |
|---|---|---|---|
| MSE |  | 0.006030 | 0.255863 |
| PSNR |  | 22.196735 | 0.513536 |
| SDSNR |  | 21.873943 | 0.507061 |
| Corelation |  | 0.951516 | 0.278486 |
| SSIM |  | 0.608033 | 0.046795 |
| VIFP1 |  | 0.227644 | 0.094781 |
| SMALLFRY |  | 85.867256 | 0.385938 |
| SHARPENBAD |  | 0.371371 | 0.125152 |
| NHW-C |  | 0.091878 | 0.474065 |
| NHW-N |  | 0.075381 | 0.545821 |
| NHW-R |  | 0.078292 | 0.421576 |