An affine transformation of a unreferenced satellite image requires a minimum of ________ control points:

Suppose you needed the geographic positions of all the emergency call boxes on the PLNU campus for a GIS project. Briefly describe how you could acquire such data.

Suppose in the process of georeferencing an image, the root mean square error (RMSE) was found to be unacceptably high. What is the first thing you should do to attempt to reduce the RMSE to acceptable levels, before proceeding with the transformation?

The origin of a raster is at the ______corner of the raster:

A raster with a larger cell size has a higher spatial resolution than a raster with a smaller cell size.

How is it possible to compress a raster file without losing ANY information stored in the file? In other words, briefly explain how lossless compression works with an example.

Vectorization refers to the process of converting from ________ data to ________ data:

Suppose a cell in a 10-m raster is located at 500,000 m easting, 5,000,000 m northing. The UTM coordinates of that cell’s bottom right corner would be m easting, m northing.

Identify and briefly explain one specific source of error in GPS positioning.

Briefly explain how you would know whether an aerial image of a city were orthorectified, just by looking at the image.