Imaging system and method using linear perceived optical density

Details Imaging system and method using linear perceived optical density Imaging system and method using linear perceived optical density

1994-11-22

1997-11-11

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347237, 347247, 395118, B41J 247, H04N 121

Patent

active

056869533

ABSTRACT:
An imaging system and method employ a linear perceived optical density interface that produces a substantially linear relationship between digital image values generated by an input imaging device and perceived optical densities of corresponding pixels within a visible representation of the image on film. The interface produces a linear change in perceived optical density in response to a linear change in the digital image values, enabling a system user to achieve predictable changes in appearance characteristics by simply adjusting the digital image values. The user can adjust the appearance characteristics in a flexible manner, without being constrained to a set of fixed transfer functions. The user can also perform desired formatting of the image at the input imaging device. The interface provides a single transfer function that is commonly applicable different input imaging devices, such that development of modality-specific transfer functions is unnecessary. The interface also eliminates the extensive hardware previously necessary for supporting a fixed set of transfer functions and formatting options, reducing cost and complexity.

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patent: 5281979 (1994-01-01), Krogstad
patent: 5300381 (1994-04-01), Buhr et al.
patent: 5321524 (1994-06-01), Yanagita
patent: 5341228 (1994-08-01), Parker et al.
patent: 5481657 (1996-01-01), Schubert et al.
patent: 5528704 (1996-06-01), Parker et al.

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