In the spirit of experiential learning,
we have decided to make your midterm examination a hands-on exercise.
For the midterm you will conduct Idrisi
for Windows Tutorial Exercises 11 and 12 on Image
Exploration and Supervised Classification, respectively.
These two exercises will provide you with a fuller understanding
of quantitative remote sensing and on the extraction of land cover
information from Landsat Thematic Mapper data. In addition to
the suggested reading on Introduction to Remote Sensing and
Image Processing in the Idrisi
for Windows Student Workbook, you might wish to refer to the
following for further information on the concepts, principles,
and practices of quantitative remote sensing:
Exercise 11 on Image Exploration, answer questions
1, 2, 3, 4, and 5. Additionally, use the Idrisi
COMPOSIT operation to create a false-color composite
of TM Bands 4, 3, and 2 in red-green-blue, respectively, using
a linear contrast enhancement with a 2.5% saturation. This will
produce a color infrared-like image. Using any technique available
to you, produce a color hardcopy of this image.
Exercise 12 on Supervised Classification, answer questions
1, 2, 3, 4, 5, and 6. Also, create a single graphic portraying
a three-band color composite of the HOW87 TM image and the maps
of your five different classifications (two variations of the
minimum Euclidean distance approach, two variations of the parallelpiped
approach, and the single maximum likelihood results. You can EXPORT
the respective images into graphics formats such as either BMP
or TIF and use a desktop publishing/graphics software package,
such as Paint Shop Pro, PowerPoint, Paint, Adobe, Corel, or others,
to create a color hardcopy. This color hardcopy should have a
title, color-coded legend, the six images (TM image and five classification
maps), captions for each of the graphics, and other annotation
that you believe describes the content.
Submit your answers to the questions and your graphics in hardcopy form to your respective instructor by 10:00 AM on Friday, March 28, 1997.
You might wish to consider creating and using similar composites for Tutorial Exercise 12, perhaps Bands 4,5,3 in R-G-B, to assist in the selection of supervised training sites.