Determining composition order from layer effects

• US 6,803,923 B1
• Filed: 05/16/2000
• Issued: 10/12/2004
• Est. Priority Date: 05/16/2000
• Status: Expired due to Term

• Current Assignee: Adobe Inc.
• Original Assignee: Adobe Systems Incorporated (Adobe Inc.)
• Inventors: Hamburg, Mark
• Primary Examiner(s): Bella, Matthew C.
• Assistant Examiner(s): BLACKMAN, ANTHONY J
• Application Number:
  US09/572,977
• Time in Patent Office: 1,610 Days
• Field of Search: 345/629, 345/113, 348/584, 382/283-285, 382/294
• US Class Current: 345/629
• CPC Class Codes: G06T 15/503 Blending, e.g. for anti-aliasing

Abstract

A method of compositing a graphical image document having a plurality of layers in which a class is stored for each layer of the plurality of layers, a compositing sequence for the plurality of layers is derived from the classes, and the plurality of layers are composited in the compositing sequence.

Claims

1. A method of compositing a graphical image document having a plurality of layers, comprising:

matching a class to each layer of the plurality of layers, wherein the class for each layer is associated with an effect and has a priority, the matching is achieved by determining the effect that generated each layer, and the document includes a plurality of classes;

for each layer of the plurality of layers, storing the class that has been matched to the layer;

using the class matched to each layer to derive a compositing sequence for the plurality of layers based on the priority of each class; and

compositing the plurality of layers in the compositing sequence using the priority of each class to order the plurality of layers.

2. The method of claim 1, wherein the document includes a first layer, and further comprising receiving user input selecting a layer effect for the first layer, and generating a second layer from the layer effect.

4. The method of claim 2, further comprising storing an association between a plurality of layer effects and a plurality of default classes, and selecting the class from the plurality of default classes based on the layer effect.

5. The method of claim 2, further comprising receiving user input selecting a class for the second layer.

6. The method of claim 1, wherein deriving a compositing sequence includes storing a compositing hierarchy, and each class is associated with a position in the compositing hierarchy.

3. A method of compositing a graphical image document having a plurality of layers, comprising:

receiving user input selecting a layer effect for a first layer of the document, wherein the layer effect is selected from drop shadow, inner shadow, outer glow, inner glow, outer bevel, inner bevel, emboss, border, and border emboss, and generating a second layer from the layer effect;

matching a class to each layer of the plurality of layers, wherein the class for each layer is associated with an effect and has a priority, the matching is achieved by determining the effect that generated each layer, and the document includes a plurality of classes;

for each layer of the plurality of layers, storing the class that has been matched to the layer;

using the class matched to each layer to derive a compositing sequence for the plurality of layers based on the priority of each class; and

compositing the plurality of layers in the compositing sequence using the priority of each class to order the plurality of layers.

7. A method of compositing a first image that overlies an underlying image, the first image including a plurality of layer effects, comprising:

generating a plurality of second images from the first image, the underlying image, and the plurality of layer effects, wherein each layer effect is a type of effect and a priority is assigned to each of the types of effects;

selecting a composition sequence for ordering the second images, wherein the composition sequence is based on the priority assigned to the types of effects; and

compositing the first image, the underlying image, and the plurality of second images in an order determined by the composition sequence.

8. The method of claim 7, wherein the compositing step includes applying any cascade blend effects to the first image to generate a first intermediate image.

9. The method of claim 8, wherein the cascade blend effects are selected from overlay and inner glow.

10. The method of claim 8, wherein the compositing step includes applying any base effects to the underlying image to generate a second intermediate image.

11. The method of claim 10, wherein the base effects are selected from drop shadow.

12. The method of claim 10, wherein the compositing step includes compositing the first intermediate image with the second intermediate image according to a color blending mode of the first image to generate a third intermediate image.

13. The method of claim 12, wherein the compositing step includes applying any standard interior effects and post-border interior effects to the third intermediate image to generate a fourth intermediate image.

14. The method of claim 13, wherein the standard interior effects are selected from inner shadow and inner glow.

15. The method of claim 13, wherein the post-border interior effects are selected from inner bevel.

16. The method of claim 13, wherein the compositing step includes applying any underlying effects and exterior effects to the second intermediate image to generate a fifth intermediate image.

17. The method of claim 16, wherein the underlying effects are selected from outer glow and drop shadow.

18. The method of claim 16, wherein the exterior effects are selected from outer bevel.

19. The method of claim 16, wherein the compositing step includes cross-fading the fifth intermediate image with the fourth intermediate image to generate a sixth intermediate image.

20. The method of claim 19, wherein the compositing step includes applying an over effects to the sixth intermediate image to generate a seventh intermediate image.

21. The method of claim 20, wherein the over effects are selected from emboss.

22. The method of claim 20, wherein the compositing step includes cross-fading the underlying image with the seventh intermediate image to generate a resulting image.

23. The method of claim 7, wherein the compositing step includes at least one conditional branch.

24. A method of compositing a first image that overlies an underlying image, the first image including a border effect and at least one other effect, comprising:

deriving a first intermediate image from the first image, the underlying image, and zero or more first layer effects;

deriving a second intermediate image from the underlying layer and the border effect;

deriving a third intermediate image from the underlying layer and zero or more second layer effects;

if the border effect is an inner border or the border effect is a center border and the at least other effect includes an inner bevel or an outer bevel, cross-fading the first intermediate image with the second intermediate image to generate a fourth intermediate image;

if layer effects include an inner bevel, deriving a fifth intermediate image from one of the fourth intermediate and first intermediate images and the inner bevel;

if the border effect is an outer border or the border effect is a center border and the at least other effect includes an inner bevel or an outer bevel, cross-fading the third intermediate image with the second intermediate image to generate a sixth intermediate image;

if the layer effects include an outer bevel, deriving a seventh intermediate image from one of the sixth intermediate image and the third intermediate image;

cross-fading the seventh intermediate image with the fifth intermediate image to generate an eighth intermediate image;

if the border effect is a center border and the at least other effect does not include an inner bevel or an outer bevel, cross-fading the eighth intermediate image with the second intermediate image to generate a ninth intermediate image;

applying zero or more fourth layer effects to the ninth intermediate image to generate a tenth intermediate image; and

cross-fading the underlying image with the tenth intermediate image to generate an eleventh image.

25. A method of compositing a layer in a graphical image document, the layer including a layer image, comprising:

receiving user input selecting a global opacity for the layer;

receiving user input selecting an effect for the layer;

generating a first image from the effect;

compositing an initial state of the document, the first image and the layer image to generate a second image; and

cross-fading the initial state of the document with the second image using the global opacity to generate a third image.

26. The method of claim 25, further comprising receiving user input selecting a common mask, and the cross-fading step uses the common mask to generate the third image.

27. A method of compositing a layer in a graphical image document, the layer including a first image and at least one layer effect, comprising:

receiving user input selecting a non-normal color blending mode for the layer;

compositing an initial state of the document below the layer with the first image according to the non-normal color blending mode to generate a second image;

generating a third image from the layer effect;

compositing an initial state of the document below the layer with the third image to generate a fourth image; and

cross-fading the fourth image with the second image to generate a fifth image.

28. A method of compositing a layer in a graphical image document, the layer including a layer image, a border effect, and a border mask, comprising:

deriving a first image from an initial state of the document below the layer;

generating a second image from the border effect;

compositing the first image with the second image to generate a third image;

deriving a fourth image from the layer image; and

cross-fading the fourth image with the third image according to the border mask to generate a fifth image.

29. A computer program product embodied on an information carrier for compositing a first image that overlies an underlying image, the first image including a plurality of layer effects, the product comprising instructions operable to cause a computer system to perform operations comprising:

generating a plurality of second images from the first image, the underlying image, and the plurality of layer effects, wherein each layer effect is a type of effect and a priority is assigned to each of the types of effects;

selecting a composition sequence for ordering the second images, wherein the composition sequence is based on the priority assigned to the types of effects; and

compositing the first image, the underlying image, and the plurality of second images in an order determined by the composition sequence.

30. The computer program product of claim 29, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to apply any cascade blend effets to the first image to generate a first intermediate image.

31. The computer program product of claim 30, wherein the cascade blend effects are selected from overlay and inner glow.

32. The computer program product of claim 30, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to apply any base effects to the underlying image to generate a second intermediate image.

45. The computer program product of claim 29, wherein the composition sequence includes at least one conditional branch.

33. The computer program product of claim 33, wherein the base effects are selected from drop shadow.

34. The computer program product of claim 33, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer sytem to composite the first intermediate image with the second intermediate image according to a color blending mode of the first image to generate a third intermediate image.

35. The computer program product of claim 34, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to apply any standard interior effects and post-border interior effects to the third intermediate image to generate a fourth intermediate image.

36. The computer program product of claim 35, wherein the standard interior effects are selected from inner shadow and inner glow.

37. The computer program product of claim 35, wherein the post-border interior effects are selected from inner bevel.

38. The computer program product of claim 35, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to apply any underlying effects and exterior effects to the second intermediate image to generate a fifth intermediate image.

39. The computer program product of claim 38, wherein the underlying effects are selected from outer glow and drop shadow.

40. The computer program product of claim 38, wherein the exterior effects are selected from outer bevel.

41. The computer program product of claim 38, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to cross-fade the fifth intermediate image with the fourth intermediate image to generate a sixth intermediate image.

42. The computer program product of claim 41, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to apply an over effects to the sixth intermediate image to generate a seventh intermediate image.

43. The computer program product of claim 42, wherein the over effects are selected from emboss.

44. The computer program product of claim 42, wherein the instructions operable to cause a computer system to composite include instructions operable to cause a computer system to cross-fade the underlying image with the seventh intermediate image to generate a resulting image.