- or download this
#!/bin/sh
...
pgmtoppm '#fff' $img.pgm > $img.pgm.ppm # convert back to RGB
pnmpsnr $img $img.pgm.ppm # diff
done
- or download this
%!PS
/Helvetica findfont 50 scalefont setfont
...
1 0 0 setrgbcolor % red
100 400 moveto text show
showpage
- or download this
pnmpsnr: PSNR between tmp-page001.ppm and tmp-page001.ppm.pgm.ppm:
pnmpsnr: Y color component doesn't differ.
...
pnmpsnr: Y color component: 81.71 dB
pnmpsnr: Cb color component: 35.86 dB
pnmpsnr: Cr color component: 26.43 dB