1 <?xml version="1.0" encoding="ISO-8859-1"?>
2 <!DOCTYPE quantization-tables [
3 <!ELEMENT quantization-tables (table)+>
4 <!ELEMENT table (description , levels)>
5 <!ELEMENT description (CDATA)>
6 <!ELEMENT levels (CDATA)>
7 <!ATTLIST table slot ID #REQUIRED>
8 <!ATTLIST levels width CDATA #REQUIRED>
9 <!ATTLIST levels height CDATA #REQUIRED>
10 <!ATTLIST levels divisor CDATA #REQUIRED>
13 JPEG quantization tables.
16 <table slot="0" alias="luminance">
17 <description>Luminance Quantization Table</description>
18 <levels width="8" height="8" divisor="1">
19 16, 12, 14, 17, 22, 30, 45, 72,
20 12, 13, 14, 17, 22, 31, 46, 74,
21 14, 14, 16, 19, 25, 35, 52, 83,
22 17, 17, 19, 23, 30, 41, 62, 100,
23 22, 22, 25, 30, 39, 54, 80, 129,
24 30, 31, 35, 41, 54, 74, 111, 178,
25 45, 46, 52, 62, 80, 111, 166, 267,
26 72, 74, 83, 100, 129, 178, 267, 428
30 <table slot="1" alias="chrominance">
31 <description>Chrominance Quantization Table</description>
32 <levels width="8" height="8" divisor="1">
33 17, 18, 22, 31, 50, 92, 193, 465,
34 18, 19, 24, 33, 54, 98, 207, 498,
35 22, 24, 29, 41, 66, 120, 253, 609,
36 31, 33, 41, 57, 92, 169, 355, 854,
37 50, 54, 66, 92, 148, 271, 570, 1370,
38 92, 98, 120, 169, 271, 498, 1046, 2516,
39 193, 207, 253, 355, 570, 1046, 2198, 5289,
40 465, 498, 609, 854, 1370,2516, 5289, 12725
43 </quantization-tables>