November 2021
Intermediate to advanced
648 pages
34h 5m
English
Content preview from Digital Cinematography, 2nd Edition
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544 Chapter 15
These two images appear to be identical. They
both have the same pixel count – 2,304 × 3,556. The
rst image has a le size of 6.54 MB and a compres-
sion of 3.58:1. The second image has a le size of
173 kB (.17MB) with a compression of 38:1. Look-
ing at them compared we can’t see a difference.
However, if we take a closer look:
Figure 15.19 The compressed image exhibits
“blockiness.”
Figure 15.20 The uncompressed image looks better
close up.
We can easily see that the highly compressed
image has signicant image artifacts in it. Where
there are subtle gradations (and a lot of noise) in
the original image, that has become ...
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