file type (should be 0x4d42): 4d42
file size: 270054
offset to image data: 54
header size: 40
width: 300
height: 300
planes: 1
bits: 24
load time:   0.0012
1 threads, invert time:   0.0016
2 threads, invert time:   0.0010
3 threads, invert time:   0.0007
4 threads, invert time:   0.0019
5 threads, invert time:   0.0018
6 threads, invert time:   0.0018
7 threads, invert time:   0.0018
8 threads, invert time:   0.0012
9 threads, invert time:   0.0012
10 threads, invert time:   0.0007
11 threads, invert time:   0.0022
12 threads, invert time:   0.0028
13 threads, invert time:   0.0021
14 threads, invert time:   0.0021
15 threads, invert time:   0.0027
16 threads, invert time:   0.0033
save time:   0.0001