Image processing

Details Image processing Image processing

1991-02-25

1992-05-05

Brinich, Stephen

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 146

Patent

active

051112868

ABSTRACT:
Apparatus for interactively modifying an image represented by digital data defining the color content of pixels in the image in terms of color components defining a first color space comprises a store (1) for storing the original image; a look-up table (2) for transforming the image into a second color space (LCH) and a store (3) for storing the second color space representation. The second color space is defined by second color components having a reduced resolution relative to those of the first color space. The representation in the second color space is fed through a look-up table (4) whose contents can be controlled by an operator so that the image at low color resolution can be retouched interactively, the retouch version being displayed on a monitor (6). Once a satisfactory retouch has been achieved, the original image in the store (1) is modified and stored in the first color space in a store (13).
In another application of the invention, a control data array such as a mask can be generated from the low color resolution image stored in the store (3).

REFERENCES:
patent: 4941039 (1990-07-01), E'Errico
patent: 5031035 (1991-07-01), Abe
patent: 5053867 (1991-10-01), Yamamato et al.

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