Invisible or low perceptibility of image alignment in dual projection systems
First Claim
1. A method comprising:
- receiving a first digital image sequence representing a visual presentation and comprising a plurality of frames that include image content;
receiving an alignment feature that is separate from the first digital image sequence and the visual presentation represented by the first digital image sequence;
generating modified frames by a processor in a projection system modifying at least some frames of the plurality of frames to represent at least part of the alignment feature but retaining part of the image content in the at least some frames that represent a portion of the visual presentation, while maintaining as unmodified with part or all of the alignment feature the image content in other frames of the plurality of frames, the modified frames being positioned in the first digital image sequence such that a first set of unmodified frames precedes the modified frames in the first digital image sequence and a second set of unmodified frames is subsequent to the modified frames in the first digital image sequence, wherein the alignment feature is divided into a plurality of alignment portions such that each modified frame is modified to include a different portion of the alignment feature in a different position of the modified frame as compared to other of the modified frames and, together, the modified frames include all of the alignment feature; and
spatially aligning the first digital image sequence and a second digital image sequence, during the visual presentation, based on the modified frames in projecting the first digital image sequence by a first projector and the second digital image sequence by a second projector, to reduce an effect of spatial changes in image alignment between projected images from the first digital image sequence and the second digital image sequence during the visual presentation.
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Accused Products
Abstract
A dual projection system can align displayed images using an alignment pattern. The alignment pattern can be used to modify part of an image content frame of an image data sequence. Two image data sequences can be spatially aligned based on the modification to part of the image content frame using the alignment pattern. An image content frame may be warped and displayed. The displayed warped image content frame can be captured. A set of transformation vectors can be determined based on the captured image content frame and alignment image data. Stored transformation data can be updated using the set of transformation vectors and the updated transformation data can be used to spatially align two image data sequences.
99 Citations
24 Claims
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1. A method comprising:
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receiving a first digital image sequence representing a visual presentation and comprising a plurality of frames that include image content; receiving an alignment feature that is separate from the first digital image sequence and the visual presentation represented by the first digital image sequence; generating modified frames by a processor in a projection system modifying at least some frames of the plurality of frames to represent at least part of the alignment feature but retaining part of the image content in the at least some frames that represent a portion of the visual presentation, while maintaining as unmodified with part or all of the alignment feature the image content in other frames of the plurality of frames, the modified frames being positioned in the first digital image sequence such that a first set of unmodified frames precedes the modified frames in the first digital image sequence and a second set of unmodified frames is subsequent to the modified frames in the first digital image sequence, wherein the alignment feature is divided into a plurality of alignment portions such that each modified frame is modified to include a different portion of the alignment feature in a different position of the modified frame as compared to other of the modified frames and, together, the modified frames include all of the alignment feature; and spatially aligning the first digital image sequence and a second digital image sequence, during the visual presentation, based on the modified frames in projecting the first digital image sequence by a first projector and the second digital image sequence by a second projector, to reduce an effect of spatial changes in image alignment between projected images from the first digital image sequence and the second digital image sequence during the visual presentation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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during display of a visual presentation in a theatre environment, capturing, as captured first image sequence frames, displayed first image sequence content frames having image content modified with alignment data of an alignment feature by a projection system modifying at least some of the first image sequence content frames to represent part of the alignment feature but retaining part of the image content that represents the visual representation in the at least some of the first image sequence content frames, while maintaining as unmodified with part or all of the alignment feature the image content in other frames of the first image sequence content frames, wherein modified first image sequence content frames are positioned in the first image sequence content frames such that a first set of unmodified first image sequence content frames precedes the modified first image sequence content frames in the first image sequence content frames and a second set of unmodified first image sequence content frames is subsequent to the modified first image sequence content frames in the first image sequence content frames, wherein the alignment feature is divided into a plurality of alignment portions such that each modified first image sequence frame is modified to include a different portion of the alignment feature in a different position of the modified first image sequence frame as compared to other of the modified first image sequence frames and, together, the modified first image sequence frames include all of the alignment feature; capturing, as captured second image sequence frames, displayed second image sequence frames having image content modified with the alignment data by the projection system modifying at least some of the second image sequence content frames to represent the part of the alignment feature but retaining the part of the image content that represents the visual representation in the at least some of the second image sequence content frames, while maintaining as unmodified with part or all of the alignment feature the image content in other frames of the second image sequence content frames, wherein modified second image sequence frames are positioned in the second image sequence frames such that a first set of unmodified second image sequence frames precedes the modified second image sequence frames in the second image sequence frames and a second set of unmodified second image sequence frames is subsequent to the modified second image sequence frames in the second image sequence frames, each modified second image sequence frame is modified to include a different portion of the alignment feature in a different position of the modified second image sequence frame as compared to other of the modified second image sequence frames and, together, the modified second image sequence frames include all of the alignment feature; determining a set of transformation vectors based on a spatial difference between the alignment data in the captured second image sequence frames and the alignment data in the captured first image sequence frames; and spatially aligning a displayed first image of a first image sequence and a displayed second image of a second image sequence using the set of transformation vectors to reduce an effect of spatial changes in image alignment between projected images from the first image sequence and the second image sequence. - View Dependent Claims (12, 13, 14, 15, 16, 17, 24)
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18. A dual display projection system, comprising:
a server comprising; a memory unit for storing a first image sequence and alignment data that is an alignment pattern having at least one alignment feature and that is separate from the first image sequence, the first image sequence representing a visual presentation and comprising a plurality of frames with image content; and a processor device configured for; generating modified frames for the first image sequence by modifying at least some frames of the plurality of frames to represent at least part of the alignment feature but retaining part of the image content that represents a portion of the visual presentation in the frames, while maintaining as unmodified with part or all of the alignment feature the image content in other frames of the plurality of frames, the modified frames being positioned in the first image sequence such that a first set of unmodified frames precedes the modified frames in the first image sequence and a second set of unmodified frames is subsequent to the modified frames in the first image sequence, wherein the processor device is configured to divide the alignment feature into a plurality of alignment portions such that each modified frame is modified to include a different portion of the alignment feature in a different position of the modified frame as compared to other of the modified frames and, together, the modified frames include all of the alignment feature; and spatially aligning the first image sequence and a second image sequence, during the visual presentation, based on the modified frames in displaying the first image sequence by a first display device and displaying the second image sequence by a second device, to reduce an effect of spatial changes in image alignment between projected images from the first image sequence and the second image sequence during the visual presentation. - View Dependent Claims (19, 20, 21, 22, 23)
Specification