从外观中提取邮票图像

Question

我正在尝试提取在PDF中保存的图像。 我能够理解除了第20行之后的部分之外的大部分流

q
1649.578 1427.348 m
1649.578 1410.377 l
1666.795 1410.377 l
1666.795 1427.348 l
h
W*
n
q
0.12 0 0 0.12 0 0 cm
/R8 gs
1 1 1 rg
1 J
1 j
0 0 0 RG
2 w
0 0 0 rg
1 1 1 rg
13756 11759 124 125 re
f 
**//Line 20 is here**
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1.9346 w
1.93449 w
5.63234 w
5.64274 w
1.87766 w
1.8807 w
1.87766 w
5.64274 w
1.88091 w
1.95397 w
1.88091 w
1.8807 w
3.73254 w
3.78629 w
3.73254 w
3.76791 w
3.77031 w
3.76791 w
3.77031 w
3.82225 w
3.82472 w
3.82225 w
3.8227 w
3.82225 w
3.94005 w
3.88188 w
3.84479 w
3.84457 w
3.84479 w
3.8423 w
3.90162 w
3.89906 w
3.90162 w
3.89906 w
2 w
13880 11884 m
13756 11884 l
S
13756 11884 m
13756 11759 l
S
13756 11759 m
13880 11759 l
S
13880 11759 m
13880 11884 l
S
1.97768 w
1.97936 w
1.97768 w
1.97936 w
1.97768 w
1.97936 w
1.97936 w
5.29995 w
5.28792 w
5.28192 w
5.19053 w
5.30599 w
1.7787 w
1.77899 w
1.77996 w
1.78142 w
1.78308 w
1.78464 w
1.78581 w
1.7865 w
1.78581 w
1.78464 w
1.78308 w
1.78142 w
1.77996 w
1.77899 w
1.7787 w
2 w
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
2 w
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
2 w
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
6 w
0.219727 0.325439 0.498047 RG
0.941406 0.941406 0.941406 rg
2 w
0 0 0 RG
0 0 0 rg
0 0 0 rg
0 0 0 rg
1.93713 w
1 1 1 rg
0 0 0 rg
1.95784 w
1.84734 w
1 1 1 rg
0 0 0 rg
1.86616 w
1.7655 w
1 1 1 rg
0 0 0 rg
1.78259 w
1.69052 w
1 1 1 rg
0 0 0 rg
1.70627 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.67377 w
1.71896 w
1.73478 w
1.7757 w
1.79259 w
1.83631 w
1.85438 w
1.90121 w
1.92058 w
1.97086 w
1.99169 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.67377 w
1.71896 w
1.73478 w
1.7757 w
1.79259 w
1.83631 w
1.85438 w
1.90121 w
1.92058 w
1.97086 w
1.99169 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.67377 w
1.71896 w
1.73478 w
1.7757 w
1.79259 w
1.83631 w
1.85438 w
1.90121 w
1.92058 w
1.97086 w
1.99169 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.85122 w
1.83321 w
1.78964 w
1.7728 w
1.73202 w
1.71624 w
1.67377 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.85122 w
1.83321 w
1.78964 w
1.7728 w
1.73202 w
1.71624 w
1.67377 w
1.64381 w
1 1 1 rg
0 0 0 rg
1.85122 w
1.83321 w
1.78964 w
1.7728 w
1.73202 w
1.71624 w
1.67377 w
2 w
1.98164 w
1.98164 w
1.79555 w
1.83983 w
1.79555 w
1.73349 w
1.77473 w
1.73349 w
1.91551 w
2 w
1.79634 w
1.8017 w
1.81262 w
1.96907 w
1.97564 w
1.98877 w
2 w
1.91686 w
1.92296 w
1.93541 w
1.87637 w
1.88233 w
1.89425 w
2 w
1.93082 w
1.95937 w
1.94036 w
1.93679 w
1.96551 w
1.94638 w
1.85049 w
1.87658 w
1.85914 w
1.78425 w
1.8085 w
1.79229 w
1.74715 w
1.7703 w
1.75486 w
1.74612 w
1.76934 w
1.75382 w
1.87045 w
1.897 w
1.87929 w
2 w
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
0 0 0 rg
1.71832 w
1.83362 w
1 1 1 rg
0 0 0 rg
2 w
0 0 0 rg
1.74565 w
1.74229 w
1.69907 w
1.61426 w
1.69907 w
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1.70048 w
11.0908 w
11.0815 w
1.70627 w
1.78259 w
11.5868 w
11.5767 w
1.78259 w
1.86616 w
12.1301 w
12.1183 w
1.86616 w
1.95784 w
12.726 w
12.7137 w
1.95784 w
2 w
0 0 0 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
10.9328 w
10.9238 w
1.67635 w
1.68197 w
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1.76982 w
1.76828 w
1.66386 w
1.67747 w
1.69131 w
1.7052 w
1.71932 w
1.73349 w
1.7478 w
1.76207 w
1.58245 w
1.66386 w
1 1 1 rg
0 0 0 rg
5.46582 w
0.219727 0.325439 0.498047 RG
5.46338 w
5.45911 w
5.45363 w
5.44725 w
5.44059 w
5.43363 w
5.4276 w
5.42219 w
5.41798 w
5.41528 w
5.41438 w
5.41528 w
5.41798 w
5.42219 w
5.4276 w
5.43363 w
5.44059 w
5.44725 w
5.45363 w
5.45911 w
5.46338 w
5.46582 w
0.941406 0.941406 0.941406 rg
6 w
5.24284 w
5.2406 w
5.23667 w
5.23162 w
5.22575 w
5.21962 w
5.21322 w
5.20739 w
5.2024 w
5.19881 w
5.19632 w
5.19549 w
5.19632 w
5.19881 w
5.2024 w
5.20739 w
5.21322 w
5.21962 w
5.22575 w
5.23162 w
5.23667 w
5.2406 w
5.24284 w
6 w
4.17949 w
0 0 0 RG
4.6938 w
4.17949 w
1.39316 w
4.17949 w
4.6938 w
4.17949 w
4.6938 w
4.17949 w
1.39316 w
4.17949 w
4.6938 w
4.17949 w
4.71234 w
4.16507 w
5.91723 w
4.16507 w
1.90632 w
1.35528 w
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
1 1 1 rg
0 0 0 rg
2 w
1.5873 w
Q
Q

根据PDF规范， ，我知道w操作员是行宽度。但是实际的邮票是一张图像！！！所以我有点困惑。这些数字周期w操作员是行宽吗？或坐标。

我创建了一个清除的PDF内容，其邮票为5 x 5像素，位于0,0（文档的左上），以简化我的解释。

= sharing“ rel =” nofollow noreferrer'在第20行之后到图像？还是与图像相关？