Jon Yngve Hardeberg and Hans Brettel and Francis Schmitt
Conference
International Symposium on Electronic Image Capture and Publishing, EICP'98
Location
Zürich (Switzerland)
Ref
Abstract
In order to properly calibrate an electronic camera for a variety of
illuminants it is necessary to estimate the spectral sensitivity of
the camera.
This spectral characterisation is obtained by measuring a set
of samples of known spectral reflectances and by inverting
the resulting system of linear equations.
In the presence of noise, this system inversion is not straightforward.
We describe several approaches to this problem.
In particular we show that the choice of samples is of great importance
for the quality of the characterisation, and we present an algorithm
for the choice of a reduced number of samples.