Change Detection: the Core Analytic
Why is change detection the most valuable thing satellites do, and how do the methods differ?
Chapter summary
Most decisions informed by satellites depend on knowing what changed, not what exists.
Key takeaways
- 1
A new building, a missing ship, a cleared forest, a flooded field, a moved missile launcher or a dug trench near a pipeline are all changes.
- 2
Change detection compares images of the same place over time and flags differences that matter.
- 3
It is the analytic most governments and companies buy, it is where AI helps most, and it is the reason revisit and archive matter.
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The Analytics Value Chain: Who Captures the Money
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