This directory contains the data files for HW 8, problem 2.

camera1.mat and camera2.mat contain the spectral sensitivity
functions for two image sensor: an early 1.5 MP sensor from the
early 90s, and a current 10MP sensor, both manufactured for still
camera applications.

human_eye.mat contains spectral sensitivities for the normal
human eye (these are the CIE 1931 XYZ color matching functions).

objects.mat contains a database gathered by Michael Vrhel at
North Carolina State University, consisting of 170 reflectance
spectra measured from everyday objects.  The names are there for
your curiosity.  You should use these spectra as the database for
deriving your linear model.

macbeth.mat contains the reflectance spectra of the 24 squares of
the Macbeth Color Checker, a widely used color calibration
target.  You should use these as the spectra with which to test
your model.

You can go ahead and treat these reflectance spectra as being
exactly the spectra that enter the camera or eye.  This is
implicitly assuming that the illumination is equal at all
wavelengths (the "equal energy illuminant," in color science
speak).


