For X-ray films, the spectral sensitivity is chosen to be appropriate to the phosphors that respond to X-rays, rather than being related to human vision.
32.
A set of color-matching functions, like the spectral sensitivity curves of the LMS space but not restricted to be nonnegative sensitivities, associates physically produced light spectra with specific tristimulus values.
33.
Arthropods appear to attain colour vision in a similar fashion to the vertebrates, by using three ( or more ) distinct groups of opsins, distinct both in terms of phylogeny and spectral sensitivity.
34.
Then what we perceive is always is the projection onto a 3 dimensional subspace, that subspace being defined by the spectral sensitivities of the cells that can detect red, green and blue light.
35.
When a system's responsivity is a fixed monotonic nonlinear function, that nonlinearity can be estimated and corrected for, to determine the spectral sensitivity from spectral input output data via standard linear methods.
36.
The cones are conventionally labeled according to the ordering of the wavelengths of the peaks of their spectral sensitivities : short ( S ), medium ( M ), and long ( L ) cone types.
37.
They can be thought of as the spectral sensitivity curves of three linear light detectors yielding the CIE tristimulus values " X ", " Y " and " Z ".
38.
The responses of the rod and cone cells of the retina, however, have a very context-dependent ( coupled ) nonlinear response, which complicates the analysis of their spectral sensitivities from experimental data.
39.
The spectral sensitivity curve of medium-wavelength ( " M " ) cone cells overlaps those of short-wavelength ( " S " ) and long-wavelength ( " L " ) cone cells.
40.
Spectral sensitivity is sometimes expressed as a quantum efficiency, that is, as probability of getting a quantum reaction, such as a captured electron, to a quantum of light, as a function of wavelength.
