![abes_med.png abes](/sites/itu.physics.uiowa.edu/files/styles/ultrawide__1312_x_562/public/2021-08/itu/abes_med.png?h=9db05240&itok=_2kH440Q)
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- Image Analysis I - Image Processing and the Ring Nebula
- Pre-Lab Quiz: Pixel Puzzlers
Pre-Lab Quiz: Pixel Puzzlers
Discuss each question with your team. Be prepared to explain the reasoning behind your team's answers after the quiz.
![abes_med.png abes](/sites/itu.physics.uiowa.edu/files/2021-08/itu/abes_med.png)
- Which of the following statements about the images above is TRUE?
- The image on the left is higher resolution.
- The image on the left is more zoomed in.
- The image on the right has fewer arcseconds per pixel.
- The image on the right covers a larger area.
- Abe Lincoln's forehead measured approximately 12cm across. Which is closest to the size of the pixels in the left-hand image?
- 2cm/pixel
- 0.5cm/pixel
- 0.2cm/pixel
- 0.05cm/pixel
- If the photographer moved farther away, how would the pixel size in the left-hand image change?
- There would be more centimeters per pixel.
- There would be fewer centimeters per pixel.
- The pixels would have a larger angular size.
- The pixels would have a smaller angular size.
- Which is TRUE about the images of Saturn below?
- The image on the right shows more of Saturn's rings.
- The image on the left is darker.
- The image on the right shows higher contrast.
- The image on the left is higher resolution.
![saturns_med(1).png saturns](/sites/itu.physics.uiowa.edu/files/2021-08/itu/saturns_med%281%29.png)