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Rich Geldreich edited this page Feb 3, 2022 · 8 revisions

Also see Example Images #3.

  • lara_1024: 1024x1733 32bpp

Original image: 1,603,063 bytes, 7.23 bits/pixel (encoded with lodepng)

lara_1024

RDO PNG: 1,201,499 bytes, 5.416 bits/pixel

rdopng lara_1024.png -level 3 -two_pass -lambda 300

lara_1024_rdo

Statistics:

RGB    Max:  50 Mean: 0.598 RMS: 1.573 PSNR: 44.194 dB
RGBA   Max:  50 Mean: 0.448 RMS: 1.363 PSNR: 45.443 dB
R      Max:  31 Mean: 0.618 RMS: 1.600 PSNR: 44.047 dB
G      Max:  44 Mean: 0.460 RMS: 1.276 PSNR: 46.013 dB
B      Max:  50 Mean: 0.715 RMS: 1.799 PSNR: 43.028 dB
A      Max:   0 Mean: 0.000 RMS: 0.000 PSNR: 100.000 dB
Y 709  Max:  34 Mean: 0.445 RMS: 1.205 PSNR: 46.513 dB

Delta image:

lara_1024_delta

  • minerology: 552x828 24bpp

Original image: 909,280 bytes, 15.92 bits/pixel (encoded with lodepng)

minerology

RDO PNG: 622,869 bytes, 10.902 bits/pixel

rdopng minerology.png -level 0 -two_pass -lambda 300

minerology_rdo

Statistics:

RGB    Max:  63 Mean: 1.394 RMS: 2.716 PSNR: 39.453 dB
R      Max:  63 Mean: 1.495 RMS: 2.903 PSNR: 38.874 dB
G      Max:  21 Mean: 1.103 RMS: 2.188 PSNR: 41.328 dB
B      Max:  35 Mean: 1.584 RMS: 2.985 PSNR: 38.632 dB
Y 709  Max:  22 Mean: 1.064 RMS: 2.091 PSNR: 41.724 dB

Delta image:

minerology_delta

  • doom: 768x432 24bpp

Original image: 498,405 bytes, 12.02 bits/pixel (encoded with lodepng)

doom

RDO PNG: 279,841 bytes, 6.748 bits/pixel

rdopng doom.png -level 0 -two_pass -lambda 300

doom_rdo

Statistics:

RGB    Max:  42 Mean: 1.101 RMS: 2.301 PSNR: 40.891 dB
R      Max:  31 Mean: 1.226 RMS: 2.257 PSNR: 41.060 dB
G      Max:  34 Mean: 0.965 RMS: 2.111 PSNR: 41.643 dB
B      Max:  42 Mean: 1.113 RMS: 2.518 PSNR: 40.110 dB
Y 709  Max:  28 Mean: 0.907 RMS: 1.896 PSNR: 42.575 dB

Delta image:

doom_delta

  • magneto: 400x516 32bpp

Original image: 164,643 bytes, 6.37 bits/pixel (encoded with lodepng)

magneto

RDO PNG: 84,790 bytes, 3.286 bits/pixel

rdopng magneto.png -level 3 -two_pass -lambda 600

magneto_rdo

Statistics:

RGB    Max:  29 Mean: 1.111 RMS: 1.927 PSNR: 42.433 dB
RGBA   Max:  29 Mean: 1.037 RMS: 1.796 PSNR: 43.043 dB
R      Max:  25 Mean: 1.117 RMS: 1.867 PSNR: 42.707 dB
G      Max:  22 Mean: 0.943 RMS: 1.667 PSNR: 43.693 dB
B      Max:  29 Mean: 1.273 RMS: 2.208 PSNR: 41.251 dB
A      Max:  18 Mean: 0.815 RMS: 1.330 PSNR: 45.654 dB
Y 709  Max:  18 Mean: 0.883 RMS: 1.541 PSNR: 44.372 dB

Delta image:

magneto_delta

RDO PNG: 72,941 bytes, 2.827 bits/pixel

rdopng magneto.png -level 3 -two_pass -lambda 600 -rt

magneto_rdo

Statistics:

RGB    Max:  32 Mean: 1.107 RMS: 1.925 PSNR: 42.441 dB
RGBA   Max:  32 Mean: 0.838 RMS: 1.681 PSNR: 43.619 dB
R      Max:  25 Mean: 1.074 RMS: 1.847 PSNR: 42.799 dB
G      Max:  22 Mean: 0.954 RMS: 1.653 PSNR: 43.763 dB
B      Max:  32 Mean: 1.293 RMS: 2.230 PSNR: 41.166 dB
A      Max:  18 Mean: 0.032 RMS: 0.430 PSNR: 55.460 dB
Y 709  Max:  18 Mean: 0.903 RMS: 1.547 PSNR: 44.340 dB

Delta image:

magneto_delta

Alpha delta image:

magneto_delta

  • kodim18: 512x768 24bpp

Original image: 782,750 bytes, 15.93 bits/pixel (encoded with lodepng)

kodim18

RDO PNG: 235,597 bytes, 4.793 bits/pixel

rdopng kodim18.png -level 15 -two_pass -lambda 1200

kodim18_rdo

Statistics:

RGB    Max:  58 Mean: 3.437 RMS: 4.766 PSNR: 34.569 dB
R      Max:  34 Mean: 3.382 RMS: 4.553 PSNR: 34.965 dB
G      Max:  28 Mean: 2.666 RMS: 3.635 PSNR: 36.920 dB
B      Max:  58 Mean: 4.263 RMS: 5.847 PSNR: 32.792 dB
Y 709  Max:  21 Mean: 2.546 RMS: 3.464 PSNR: 37.339 dB

Delta image:

kodim18_delta

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