Investigations into multi-scale retinex
Kobus Barnard and Brian Funt, "Investigations into multi-scale retinex,"
Imaging in Multimedia '98, Derby, UK, March 1998, pages 9-17.
The main thrust of this paper is to investigate the multi-scale retinex
(MSR) approach to image enhancement to explain the effect of the processing
from a theoretical standpoint. This leads to a new algorithm with fewer
arbitrary parameters that is more flexible, maintains colour fidelity,
and still preserves the contrast-enhancement benefits of the original MSR
method. To accomplish this we identify the explicit and implicit processing
goals of MSR. By decoupling the MSR operations from one another, we build
an algorithm composed of independent steps that separates out the issues
of gamma adjustment, colour balance, dynamic range compression, and colour
enhancement, which are all jumbled together in the original MSR method.
We then extend MSR with colour constancy and chromaticity-preserving contrast
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Keywords: colour, colour constancy, dynamic range compression, Retinex,
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