Real-time parallel logarithmic filtering.
Parallel logarithmic filtering of multiplicatively combined image signals is achieved in real time. A liquid-crystal light valve (LCLV) is combined with a specially designed halftone screen that matches the LCLV characteristics to produce an overall logarithmic transformation. Experimental results are shown.
Armand
A
A
Strand
T C
TC
Sawchuk
A A
AA
Soffer
B H
BH