Apparatus and technique for generating a screened reproduction of an image
First Claim
Patent Images
1. A technique for generating a screened reproduction of an image comprising the steps of:
- providing a representation of an original containing information representing the input density values of the original;
composing reference screen dots andcomposing printing dots using said reference screen dots and the input density values of the original,said step of composing said reference screen dots comprising employing more than two spatial functions to compose said reference screen dots independently of said input density values.
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Abstract
A method and apparatus for generating a screened reproduction of an image in which a representation of an original is provided containing information representing the input density values of the original and a plurality of spatial functions and a function of the input density values of the original are utilized to compose reference screen dots. Printing dots are then composed using the reference screen dots and the input density values of the original.
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Citations
20 Claims
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1. A technique for generating a screened reproduction of an image comprising the steps of:
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providing a representation of an original containing information representing the input density values of the original; composing reference screen dots and composing printing dots using said reference screen dots and the input density values of the original, said step of composing said reference screen dots comprising employing more than two spatial functions to compose said reference screen dots independently of said input density values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A technique for generating a screened reproduction of an image comprising the steps of
providing a representation of an original containing information representing the input density values of the original; -
composing reference screen dots and composing printing dots using the reference screen dots and the input density values of the original, said step of composing said reference screen dots comprising employing at least a partially non-arithmetic combination of a plurality of spatial functions to compose said reference screen dots independently of said input density values. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A technique for generating a screened reproduction of an image comprising the steps of:
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providing a representation of an original containing information representing the input density values of the original; composing reference screen dots; and composing printing dots using the reference screen dots and the input density values of the original, said step of composing said reference screen dots comprising; employing a plurality of spatial functions to compose reference screen dots, including the steps of; employing a first plurality of spatial functions independently of said input density values to produce a first result; employing a second plurality of spatial functions independently of said input density values to produce a second result; and selecting between said first result and said second result to compose said reference screen dots. - View Dependent Claims (18, 19, 20)
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Specification