STEREO VIEWING
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Abstract
The invention relates to creating and viewing stereo images, for example stereo video images, also called 3D video. At least three camera sources with overlapping fields of view are used to capture a scene so that an area of the scene is covered by at least three cameras. At the viewer, a camera pair is chosen from the multiple cameras to create a stereo camera pair that best matches the location of the eyes of the user if they were located at the place of the camera sources. That is, a camera pair is chosen so that the disparity created by the camera sources resembles the disparity that the user'"'"'s eyes would have at that location. If the user tilts his head, or the view orientation is otherwise altered, a new pair can be formed, for example by switching the other camera. The viewer device then forms the images of the video frames for the left and right eyes by picking the best sources for each area of each image for realistic stereo disparity.
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Citations
94 Claims
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1-74. -74. (canceled)
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75. A method, comprising:
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determining head orientation of a user to obtain a first head orientation, selecting a first image source and a second image source based on said first head orientation, said first and second image source forming a stereo image source, rendering a first stereo image by rendering a first target image for one eye of the user using said first image source and a second target image for another eye of the user using said second image source, determining head orientation of said user to obtain a second head orientation, selecting said second image source and a third image source based on said second head orientation, said second and third image source forming a stereo image source, rendering a second stereo image by rendering a third target image for one eye of the user using said second image source and a fourth target image for another eye of the user using said third image source.
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76. An apparatus comprising at least one processor, memory including computer program code, the memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least:
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determine head orientation of a user to obtain a first head orientation, select a first image source and a second image source based on said first head orientation, said first and second image source forming a stereo image source, render a first stereo image by rendering a first target image for one eye of the user using said first image source and a second target image for another eye of the user using said second image source, determine head orientation of said user to obtain a second head orientation, select said second image source and a third image source based on said second head orientation, said second and third image source forming a stereo image source, render a second stereo image by rendering a third target image for one eye of the user using said second image source and a fourth target image for another eye of the user using said third image source. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92)
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93. An apparatus comprising at least one processor, memory including computer program code, the memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least:
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determine head orientations of a user for forming a stereo video sequence of a scene; select a first image source, a second image source and a third image source based on said head orientations; and render said stereo video sequence by rendering an image sequence for the left eye of the user using said first image source and said second image source and an image sequence for the right eye of the user using said first image source and said third image source, wherein said first image source is used to render different areas of said scene for the left and right eyes of the user in each stereo frame of said video sequence.
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94. A computer program product embodied on a non-transitory computer readable medium, comprising computer program code configured to, when executed on at least one processor, cause an apparatus or a system to:
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determine head orientation of a user to obtain a first head orientation, select a first image source and a second image source based on said first head orientation, said first and second image source forming a stereo image source, render a first stereo image by rendering a first target image for one eye of the user using said first image source and a second target image for another eye of the user using said second image source, determine head orientation of said user to obtain a second head orientation, select said second image source and a third image source based on said second head orientation, said second and third image source forming a stereo image source, render a second stereo image by rendering a third target image for one eye of the user using said second image source and a fourth target image for another eye of the user using said third image source.
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Specification