US 5,184,214 AGranted

Image output system

AssigneeFuji Photo Film Co., Ltd.

InventorSetsuji Tatsumi

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Abstract

An image output system processes an input image signal from an image signal source, such as a television camera, to produce an output image signal to record an image on an image recording medium. The input image signal is logarithmically converted into an image signal which matches the image output system, using a first look-up table which is selected to match the image signal source. Then, the image signal, which has been converted by the first look-up table, is linearly converted into an image signal based on first corrective parameters set to achieve given color qualities. The image signal, which has been linearly converted, is converted an image signal which matches the image recording medium, using a second look-up table which is selected to match the image recording medium. The image signal, which has been converted by the second look-up table, is exponentially converted into an exponential output image signal based on second corrective parameters set to achieve given color qualities.

Claims5

Dependent claims

An image output system for processing an input image signal from an image signal source to produce an output image signal to record an image on an image recording medium, comprising:

a first look-up table for converting an input image signal into an image signal which matches the image output system, said first look-up table being selected to match the image signal source;
linear converting means for linearly converting said image signal, which has been converted by said first look-up table, into an image signal based on first corrective parameters set to achieve given color tone;
a second look-up table for converting said image signal, which has been converted by said linear converting means, into an image signal which matches the image recording medium, said second look-up table being selected to match the image recording medium;
and
exponential converting means for converting said image signal, which has been converted by said second look-up table, into an exponential output image signal based on second corrective parameters set to achieve given color tone.

2 more elements

Dependencies are inferred from the claim text.