Color imaging apparatus including a means for electronically non

Details Color imaging apparatus including a means for electronically non Color imaging apparatus including a means for electronically non

1987-10-14

1990-05-15

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 41, 358 42, 358 44, H04N 909, H04N 907, H04N 9077

Patent

active

049262475

ABSTRACT:
A color imaging apparatus includes means for electronically non-linearly expanding or compressing the dynamic range of an image signal output therefrom. Separate output signals of respective brightness for different colors are logarithmically compressed, inverse-logarithmically converted, then linear-matrix-converted and multipled by a compression factor of brightness level for the respective color signals to produce a logarithmically compressed color signal without varying the tone.

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