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 |