Methods and apparatus, including computer programs, for processing transparency attributes of digital graphics objects. The techniques result in the color compositing of an arbitrary structure of artwork elements defining the appearance of a page to produce a result color at any position on the page that is continuous with respect to all inputs.

Claims

24 · 2 independent · depth 3

24 granted claims

›1.independentA method for compositing digital graphics objects, comprising:ncompositing a transparency group of digital graphics objects on a group backdrop to gen…+11

›2.↳ 1The method of claim 1, wherein the transparency group contains a second group.d2

›3.↳ 1The method of claim 1, further comprising:ncompositing the transparency group as an element of a third group.d2

›4.↳ 1The method of claim 1, wherein the transparency group includes a hierarchy of objects.d2

›5.↳ 1The method of claim 1, wherein the transparency group is within a hierarchy of objects defining a page and the group backdrop is defined by a composit…d2+1

›7.↳ 1The method of claim 1, wherein:ncompositing the transparency group of digital objects includes compositing a sequence of digital graphics objects in t…d2

›8.↳ 1The method of claim 1, wherein the transparency group is on a document page, the group backdrop having an opacity, the beginning of the group being di…d2+1

›10.↳ 1The method of claim 1, further comprising:ncompositing the compositing result on the group backdrop.d2

›11.↳ 1The method of claim 1, wherein:ncompositing the transparency group on the group backdrop includes generating an accumulated color that includes a pure…d2

›12.↳ 1The method of claim 1, wherein:nthe backdrop fraction is based on a alpha Î±0 of the group backdrop and a group alpha Î±gn of the transparency group a…d2

›13.independentA computer program product, tangibly stored on a computer-readable medium, for compositing digital graphics objects, comprising instructions operable …+11

›14.↳ 13The product of claim 13, wherein the transparency group contains a second group.d2

›15.↳ 13The product of claim 13, further comprising instructions to:ncomposite the transparency group as an element of a third group.d2

›16.↳ 13The product of claim 13, wherein the transparency group includes a hierarchy of objects.d2

›17.↳ 13The product of claim 13, wherein the transparency group is within a hierarchy of objects defining a page and the group backdrop is defined by a compos…d2+1

›19.↳ 13The product of claim 13, wherein:nthe instructions operable to cause the programmable processor to composite the transparency group of digital objects…d2

›20.↳ 13The computer program product of claim 13, wherein the group is on a document page, the group backdrop having an opacity, the beginning of the group be…d2+1

›22.↳ 13The computer program product of claim 13, further comprising instructions operable to cause a programmable processor to:ncomposite the compositing res…d2

›23.↳ 13The Computer program product of claim 13, wherein:nthe instructions operable to cause the programmable processor to composite the transparency group o…d2

›24.↳ 13The computer product of claim 13, wherein:nthe backdrop fraction is based on a alpha Î±0 of the group backdrop and a group alpha Î±gn of the transpare…d2

Classifications

4 codes

USPC · US Patent Classification

345/629345/594345/619345/592

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4.7 y

1,729 days filing → grant

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2 RCE

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Jeffery Brier

art unit 2779 · TC 2700

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