Change detection is just that, detecting changes. For this lab you will be looking at three dates of photography and mapping changes; bare ground changes to agriculture, bare ground changes to urban, bare ground changes to industrial, agriculture changes to urban, agriculture changes to industrial etc. Some changes do not happen; urbanized areas do not change back into agriculture, industrial areas rarely change to urban areas, for just about any area that was bare ground (natural), once it is converted will most likely never change back.
This lab is "on your own" so to speak meaning that you will have to choose which types of changes you are going to map, how you are going to map them and how to represent the changes. What you are going to turn in is one map showing what areas have changed and what those changes were. Your map has to have a legend that shows what the symbols/colors/lines mean, a title that includes your name, the data sources you used (photo dates) and it should be stand-alone (understandable without any written explanation). Given that this may be the first time you have been asked to produce a map from images there is quite a bit of room for experimentation and improvisation, basically I want to see what has changed between three dates of imagery on a map that you make. How you choose to represent those changes, what colors/patterns you use and how detailed of a legend you use is entirely up to you (but you should map at least three types of changes). Your map should fit on one 8.5x11" page and it should be neat, neatness really counts with this assignment and due to the level of effort required it will be worth a significant amount of points.
Use this map as a reference if you like
Goleta
Quad
A good place to start is by making a sketch map (by eye or by tracing up against the window) of the earliest photo you choose to interpret, then making another sketch map of the next year and then the next, then combine them. This process make take a few tries but practice makes perfect.
*Printing Instructions: If you push the print button on your browser these images might print-out cutoff on one side. This is because these images are "landscape", meaning horizontal, you want to print them in "portrait" mode (vertical). To do this go to File -> Page Setup and choose "portrait" instead of landscape, or you can do this in File -> Print (click on Properties).
High Resolution Versions (prints
available for viewing in the UCSB Map & Image Library)
(1280 pixels wide, 150 dpi)
1928
(210kb)
1943
(394kb)
1954
(282kb)
1975
(309kb)
1961
(350kb)
2001
(229kb)
EXTRA CREDIT - Change Detection Map of Area 51
1959 |
1968 |
1998 |
2000 |