Counting Crowds

The video discusses the challenges and methods of estimating large crowds, using Barack Obama's inauguration as a case study. It highlights the use of aerial photography and satellite images to divide the scene into regions, calculate their size, and assign density ratings. These methods help estimate the crowd size, which was around 1.8 million people, though estimates varied. The video concludes by noting that while estimates are useful, they are rarely exact.

What methods were used to estimate the crowd size at President Obama's inauguration?

How many people had tickets for the inauguration, and what was the challenge in counting those without tickets?

Explain how aerial photography contributed to estimating the crowd size.

What was the estimated crowd size at the inauguration, and what range did different sources provide?

Discuss the limitations of crowd estimation methods as highlighted in the text.