Stop motion animation system

• US 5,519,826 A
• Filed: 04/29/1994
• Issued: 05/21/1996
• Est. Priority Date: 04/29/1994
• Status: Expired due to Fees

• Current Assignee: Midway Games West, Inc. (Light & Wonder Incorporated)
• Original Assignee: Atari Incorporated (Infogrames Entertainment SA)
• Inventors: Riesenberger, Stephen R., Petty, J. Cameron, Harper, Dennis D.
• Primary Examiner(s): Herndon, Heather R.
• Assistant Examiner(s): Burwell, Joseph R.
• Application Number:
  US08/236,634
• Time in Patent Office: 753 Days
• Field of Search: 395/152, 395/135, 345/122, 348/586, 348/587, 348/592, 358/311, 358/332, 352/45-54, 352/87, 352/89
• US Class Current: 345/473
• CPC Class Codes: G03B 15/08 Trick photography
• CPC Class Codes: H04N 5/262 Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
• CPC Class Codes: H04N 5/272 Means for inserting a foreground image in a background image, i.e. inlay, outlay

Abstract

A system for developing stop motion animation sequences including a lighting system, an image capture system and a video processing system. An object is positioned on a stage in a desired pose and is illuminated. A camera records the illuminated object and the image capture system digitally records this image as a beauty shot. The object is then illuminated by an back light which produces a silhouette. The camera then records this silhouette and the image capture system digitally records this image as a matte shot. The object is then illuminated by an overhead light which produces a shadow on the stage. The camera records this image and the image capture system records this image as a shadow shot. The beauty, matte and shadow shots are then processed by the graphics processing system. Subsequently, the beauty and matte shots are combined to produce a final beauty shot whereby only the portion of the image in the beauty shot that has the same position as the silhouette in the matte shot is included in the final shadow shot. Hence, a perfectly matted final beauty shot is produced along with a corresponding shadow shot. This process is repeated for each shot comprised of multiple frames of the stop motion animation sequence.

Claims

1. A system for developing stop motion animation sequences for an object positioned on a surface comprising:

a lighting system including at least one beauty light and at least one back light, wherein said beauty light illuminates said object to produce a beauty image of said object and wherein said back light illuminates said object to produce a silhouette image of said object;

an image capture system which receives said beauty and said silhouette images and electronically captures said beauty and silhouette images respectively as a beauty shot and a matte shot, said beauty shot comprising an image of said object against a first background wherein said image occupies a first position in said beauty shot, and said matte shot comprising an image of said silhouette of said object against a second background wherein said silhouette occupies a first position in said matte shot an defines a first region of said matte shot; and

a graphics processing system which receives said beauty shot and said matte shot from said image capture system, and combines at least a portion of said matte shot with at least a portion of said beauty shot in a predetermined relationship, so as to produce a final beauty shot comprising a uniform background and a portion of said beauty shot wherein said final beauty shot is configured to be one of a plurality of final beauty shots that comprise a stop motion animation sequence.

2. The system of claim 1, wherein said beauty shot and said matte shot have a predetermined format where said first position in said beauty shot corresponds to said first position in said matte shot and said graphics processing system combines said beauty shot and said matte shot, so as to produce said final beauty shot which is comprised of a uniform background and a portion of said image of said object in said beauty shot that lies within said first region of said matte shot.

3. The system of claim 1, wherein said image capture system comprises:

a camera which obtains said beauty and said silhouette images of said object;

an image capture card which, responsive to signals from said camera, electronically records a signal corresponding to said beauty and said silhouette images of said object as said beauty and said matte shots in a storage device; and

a computer having access to said storage device and having an associated display device which displays said beauty and said matte shots.

4. The system of claim 3, wherein said camera obtains analog signals representative of both said beauty image and said silhouette image and said image capture system translates said analog signals into digital signals and stores said digital signals in said storage device as said beauty and said matte shots.

5. The system of claim 1, wherein said graphics processing system comprises a computer with user operable inputs and an associated display device, such that a user can use said computer to view said beauty shot and said matte shot and position said matte shot over said beauty shot to produce said final beauty shot.

6. The system of claim 5, wherein said graphics processing system includes at least one input device which allows a user to selectively alter said beauty shot, said matte shot and said final beauty shot while said beauty shot, said matte shot or said final beauty shot is displayed on said display device.

7. The system of claim 6, wherein said final beauty shot is at least one of a plurality of colors and said user can use said at least one input device to change said at least one of a plurality of colors of said final beauty shot to a desired color.

8. The system of claim 1, wherein said lighting system further includes at least one shadow light which illuminates said object to thereby produce a shadow of said object on said surface.

9. The system of claim 8, wherein said image capture system receives an image of said shadow and captures said image of said shadow as a shadow shot, wherein said shadow occupies a first position in said shadow shot and wherein said graphics processing system receives said shadow shot and processes said shadow shot to produce a final shadow shot corresponding to said final beauty shot.

10. The system of claim 9, wherein said shadow shot is comprised of an image of said shadow and an image of said object, and wherein said graphics processing system removes said image of said object to obtain said final shadow shot.

11. The system of claim 9, wherein said graphics processing system removes all portions of said image of said object in said shadow shot which are not immediately adjacent to said image of said shadow to thereby produce said final shadow shot.

12. The system of claim 1, wherein said graphics processing system processes said matte shot so that said matte shot is comprised of an image of said silhouette in a first uniform color, with an outline substantially corresponding to the outline of said object, positioned against a background of a second uniform color.

13. The system of claim 12, wherein said graphics processing system includes a storage device, and wherein said matte shot and said beauty shot are stored in said storage device in a first format which allows said beauty shot and said matte shot to be combined to form said final beauty shot.

14. The system of claim 1, wherein said final beauty shot is an image comprised of a plurality of colored pixels, and wherein said graphics processing system scales said final beauty shot to a desired resolution.

15. The system of claim 14, wherein said graphics processing system scales said final beauty shot to a desired resolution using an anti-aliasing technique which minimizes any aliasing effects on said image of said object in said final beauty shot.

16. The system of claim 15, wherein said anti-aliasing technique comprises selectively changing at least some of the pixels adjacent the outer contour of said image of said object in said final beauty shot to a selected color, where said selected color is selected to correspond to said color of said object at said outer contours so that said aliasing effect is minimized.

17. The system of claim 1, wherein said final beauty shot can be placed in a stop motion animation sequence where said background of said beauty shot is replaced with a different background.

18. The system of claim 1, wherein said image capture system captures a plurality of beauty shots and a plurality of matte shots and said graphics processing system uses said plurality of beauty shots and said plurality of matte shots to produce a stop play animation sequence comprised of a plurality of final beauty shots.

19. The system of claim 18, wherein said image capture system includes a display device and said image capture system is used to produce a review animation file comprised of a plurality of said beauty shots which is then be displayed on said display device.

20. A system for developing a stop motion animation sequence for an object positioned on a surface comprising:

a lighting system including at least one beauty light which illuminates said object to produce a beauty image of said object and at least one shadow light positioned to illuminate said object to thereby produce a shadow of said object on said surface;

an image capture system which receives said beauty image and said shadow of said object and electronically captures said beauty image as a beauty shot, comprising an image of said object against a first background wherein said image occupies a first position in said beauty shot, and wherein said image capture system captures said shadow as a shadow shot comprising an image of said shadow against a second background wherein said shadow occupies a first position in said shadow shot; and

a graphics processing system which receives said beauty shot and said shadow shot, and wherein said graphics processing system processes said beauty shot to produce a final beauty shot comprised of an image of said object against a uniform background, wherein said final beauty shot is configured to be one of a plurality of final beauty shots comprising said stop motion animation sequence, and wherein said graphics processing system further processes said shadow shot to produce a corresponding final shadow shot which is comprised of an image of said shadow against a uniform background wherein said final shadow shot is configured to be selectively combined with said final beauty shot so as to comprise said stop motion animation sequence.

21. The system of claim 20, wherein said lighting system further includes at least one back light which illuminates said object to produce a silhouette image of said object, and wherein said image capture system captures said silhouette image of said object as a matte shot comprising an image of said silhouette of said object against a third background wherein said silhouette occupies a first position in said matte shot and defines a fist region of said matte shot.

22. The system of claim 21, wherein said graphics processing system further receives said matte shot, wherein said beauty shot and said matte shot have a predetermined format such that said first position in said beauty shot corresponds to said first position in said matte shot, and wherein said graphics processing system combines said matte shot and said beauty shot to produce said final beauty shot which is comprised of a uniform background and an image of the portion of said image in said beauty shot that lies within said first region of said matte shot.

23. The system of claim 22 wherein said image capture system captures a plurality of beauty shots and a plurality of matte shots and wherein said graphics processing system uses said plurality of beauty shots and said plurality of matte shots to produce a stop play animation sequence comprised of a plurality of final beauty shots.

24. The system of claim 23, wherein said image capture system captures a plurality of shadow shots and wherein said graphics processing system further processes said plurality of shadow shots to obtain a plurality of final shadow shots.

25. The system of claim 24, wherein said plurality of final beauty shots and said plurality of final shadow shots are placed into a new background so that said stop play animation sequence is comprised of a plurality of shots having said images of said object from said plurality of final beauty shots and said images of said shadow from said plurality of final shadow shots against said new background.

26. The system of claim 25, wherein said object is a dinosaur puppet with a fully articulated metal armature that can be posed into a variety of different positions and said new background resembles a jungle scene.

27. The system of claim 20, wherein said image capture system comprises:

a camera which obtains said beauty and said silhouette images of said object;

an image capture card which, responsive to signals from said camera, electronically records signals corresponding to said beauty and said silhouette images of said object as said beauty and said matte shots in a storage device; and

a computer having access to said storage device and having an associated display device which displays said beauty and said matte shots.

28. The system of claim 27, wherein said camera obtains analog signals representative of both said beauty image and said silhouette image and said image capture system translates said analog signals into digital signals and stores said digital signals in said storage device as said beauty and said matte shots.

29. The system of claim 28, wherein said graphics processing system comprises a computer with user operable inputs and an associated display device, such that a user can use said computer to view said beauty shot and said matte shot and position said matte shot over said beauty shot to produce said final beauty shot.

30. A system for developing stop motion animation sequences for an object positioned on a surface comprising:

a lighting system including at least one beauty light which illuminates said object to produce a beauty image of said object, at least one back light which illuminates said object to produce a silhouette image of said object and at least one shadow light which illuminates said object to produce a shadow of said object on said surface;

a video capture system including a camera, which obtains analog signals representative of said beauty image, said silhouette image and said shadow of said object, and an image capture card which translates said analog signals into digital signals and stores said digital signals in a storage device as a beauty shot, a matte shot and a shadow shot, wherein said beauty shot is comprised of said beauty image against a background such that said image occupies a first position in said beauty shot, wherein said matte shot is comprised of said silhouette image against a background such that said silhouette occupies a first position in said matte shot, and wherein the shadow shot is comprised of said image of said shadow against a background such that said image of said shadow occupies a first position in said shadow shot and defines a first region of said matte shot; and

a video processing system which has access to said storage device and receives said beauty shot, matte shot and shadow shot from said storage device, wherein said beauty shot and matte shot are in a predetermined format where said first position of said beauty shot corresponds to said first position of said matte shot and wherein said graphics processing system combines said matte shot with said beauty shot and thereby produces a final beauty shot comprised of a uniform background and an image of a portion of said image in said beauty shot lies within said first region of said matte shot, and wherein said video processing system further processes said shadow shot to obtain a final shadow shot comprised of said image of said shadow against a uniform background and wherein said final beauty shot and said final shadow shot are respectively configured to be one of a plurality of final beauty shots and final shadow shot comprise a stop motion animation sequence.

31. The system of claim 30, wherein said graphics processing system includes at least one input device which allows a user to selectively alter said beauty shot, said matte shot and said final beauty shot while said beauty shot, said matte shot or said final beauty shot is displayed on said display device.

32. The system of claim 30, wherein said graphics processing system processes said matte shot so that said matte shot is comprised of an image of said silhouette in a first uniform color positioned against a background of a second uniform color.

33. The system of claim 30, wherein said final beauty shot is an image comprised of a plurality of colored pixels and said graphics processing system scales said final beauty shot to a desired resolution.

34. The system of claim 30, wherein said graphics processing system scales said final beauty shot to a desired resolution using an anti-aliasing technique which minimizes any aliasing effects on said image of said object in said final beauty shot.

35. The system of claim 34, wherein said anti-aliasing technique comprises selectively changing at least some of the pixels adjacent the outer contour of said image of said object in said final beauty shot to a selected color, wherein said selected color is selected to correspond to said color of said object at said outer contours so that said aliasing effect is minimized.

36. The system of claim 30, wherein said plurality of final beauty shots and said plurality of final shadow shots are placed into a new background so that a stop play animation sequence is comprised of a plurality of shots presenting said images of said object from said plurality of final beauty shots and said images of said shadow from said plurality of final shadow shots against said new background.

37. The system of claim 36, wherein said object is a dinosaur puppet with a fully articulated metal armature that can be posed into a variety of different positions and said new background resembles a jungle scene.

38. A method of producing a stop motion animation sequence comprising the steps of:

positioning an object on a surface in a desired pose;

illuminating said object with a light to obtain a beauty image of said object;

electronically capturing a beauty shot of said object comprised of said beauty image against a background, wherein said beauty image occupies a first position in said beauty shot;

illuminating said object with a light so that a shadow of said object is produced on said surface;

electronically capturing a shadow shot of said object, said shadow shot comprised of said shadow against a background, wherein said shadow occupies a first position in said shadow shot;

processing said beauty shot of said object to obtain a final beauty shot, wherein said final beauty shot comprises an image of said object against a uniform background; and

processing said shadow shot of said object to obtain a final shadow shot, wherein said final shadow shot corresponds to said final beauty shot and is comprised of an image of said shadow against a uniform background.

39. The method of claim 38, further comprising the steps of:

illuminating said object with a light so that a silhouette of said object is produced;

electronically capturing a matte shot of said object, wherein said matte shot is comprised of said silhouette against a background, and wherein said silhouette occupies a first position in said matte shot that defines a first region of said matte shot; and

combining at least a portion of said matte shot with at least a portion of said beauty shot to produce said final beauty shot which is comprised of a uniform background and an image of a portion of said image in said beauty shot that lies within said first region of said matte shot when said beauty shot and said matte shot were combined.

40. The method of claim 38 wherein the steps of electronically capturing said beauty shot and said shadow shot comprises:

obtaining analog signals using a camera, said signals being representative of said beauty image and said silhouette image; and

translating said analog signals into digital signals; and

storing said digital signals as said beauty shot and said matte shot.

41. The method of claim 38, further comprising the steps of:

obtaining a plurality of final beauty shots and final shadow shots according to the steps of claim 38;

storing said plurality of final beauty shots and final shadow shots in a storage device;

scaling said plurality of final beauty shots and final shadow shots to a desired size; and

replacing said uniform background in said final beauty shots and said final shadow shots with a new background.

42. A method of producing a stop motion animation sequence comprising the steps of:

positioning an object on a surface in a desired pose;

illuminating said object with a light to obtain a beauty image of said object;

electronically capturing a beauty shot of said object comprised of said beauty image against a background, wherein said beauty image of said object occupies a first position in said beauty shot;

illuminating said object with a light to obtain a silhouette of said object;

electronically capturing a matte shot of said object comprised of said image of said silhouette against a background, wherein said silhouette occupies a first position in said matte shot and defines a first region of said matte shot;

combining at least a portion of said beauty shot with at least a portion of said matte shot in a predetermined relationship; and

combining said beauty shot and said matte shot in a predetermined relationship to thereby produce said final beauty shot, wherein said final beauty shot is comprised of a portion of said image in said beauty shot, that lies in said first region of said matte shot when said beauty shot and said matte shot are combined.

43. The method claim 42, wherein the steps of electronically capturing said beauty shot and said matte shot comprises:

obtaining analog signals using a camera representative of said beauty image and said silhouette image; and

translating said analog signals representative of said beauty image and said silhouette image into digital signals; and

storing said digital signals as said beauty shot and said matte shot.

44. The method of claim 42, further comprising the steps of:

obtaining a plurality of final beauty shots and final shadow shots according to the steps of claim 42;

storing said plurality of final beauty shots in a storage device;

scaling said plurality of final beauty shots and final shadow shots to a desired size; and

replacing said uniform background in said final beauty shots and said final shadow shots with a new background.

45. The method of claim 42, wherein said step of combining said beauty shot and said matte shot comprises the steps of:

displaying said beauty shot on a video display;

displaying said matte shot on said video display; and

positioning said matte shot so that said matte shot overlaps said beauty shot, such that said silhouette in said matte shot is in substantially the same position on said video display as said beauty image in said beauty shot.