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Measuring Angles In Digital Images. Presented by Stephen Schneider. Angles in Nature. leaf branching angles. Eratosthenes: The Size of the Earth. Eratosthenes realized: Distance/Circumference = A ngle / 360. (from Cairo) Circumference = 700 km × 360 / Angle = …. - PowerPoint PPT Presentation
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Measuring AnglesMeasuring AnglesIn Digital ImagesIn Digital Images
Presented by Presented by Stephen SchneiderStephen Schneider
Angles in Nature
leaf branching angles
Eratosthenes: The Size of the
Earth
Eratosthenes realized: Distance/Circumference = Angle / 360
(from Cairo) Circumference = 700 km × 360 / Angle = …
Circumference = 700 km × 360 / 6.5° = 38769.2308 km
Circumference = 700 km × 360 / 6.5° = 38769.2308 km ≈ 40,000 km
Circumference = 700 km × 360 / 6.5°
Eratosthenes: The Size of the
Earth (cont)
Eratosthenes realized: Distance/Circumference
= Angle / 360
Human Family Tree
Facial Slope
Try to line up teeth (near and far) so they make a straight line —unlike this image
Facial Recognition
What other angles do you think might be diagnostic?
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