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r2 - 17 May 2006 - 10:06:25 - ScottLawrenceYou are here: TWiki >  LIAS Web  > ImageCompression
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Table 1: Indigo JPG compression times and sizes
Quality Time (seconds) Size (kb)
5 0.160 29.9
10 0.165 46.7
20 0.168 74.3
30 0.170 99.0
40 0.170 116.4
50 0.172 130.5
60 0.173 144.0
70 0.174 161.4
80 0.179 185.9
90 0.230 229.1

What follows are full-res (4k) terrapix, with normalization

Table 2: Terrapix JPEG/PNG Compression times and sizes

Quality JPG (seconds) PNG (seconds) JPG (meg) PNG (meg)
5 5.886 8.03 1.5 31
10 5.957 8.86 2.4 31
20 6.070 9.21 3.7 31
30 6.103 9.83 4.9 31
40 6.305 10.34 5.7 31
50 6.555 10.15 6.5 31
60 6.814 10.27 7.1 31
70 6.800 10.27 8.0 31
80 6.765 10.29 9.3 31
90 7.137 10.33 11.4 33

What follows are quarter-res (1k) terrapix, with and without normalization

Table 3: Terrapix JPEG Compression, 1/4 res

Quality Time, no norm Time, norm Size, no norm (k) Size, norm (k)
5 4.085 4.154 21 46
10 3.987 4.336 54 92
20 4.012 4.251 103 163
30 4.261 4.116 145 227
40 4.048 4.298 182 280
50 4.187 4.375 220 327
60 4.208 4.268 260 373
70 4.035 4.327 210 432
80 4.116 4.251 402 511
90 5.400 4.280 543 650

-- ScottLawrence - 17 May 2006

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