Measure the lengths of the pine needles in this photograph.
What is the average length of the needles?
Bonus Challenge: How much error is introduced by the curvature of the pine needles?
Download the images of the pine needles below and use in the AnalyzingDigitalImages software.
Use the "Spatial" window and select the "Line" tool to measure the lengths of the needles.
To download the image, either right-click or click and hold on the image. A pop-up menu will have the option to 'Save Image As...', which allows you to save the image on your computer.
You may do this to download most images available on the Internet.
See the Manual and Help Files on AnalyzingDigitalImages for guidance. AnalyzingDigitalImages is available in the DEW software bundle.