Adjustment of perceived roundness in stereoscopic image of a head
First Claim
1. A method of adjusting perceived roundness in a stereoscopic pair of images that image a head, the method comprising processing one or each image by the following steps:
- identifying, by a computer apparatus, at least one region of the image that images a part of the head; and
locally transforming, by the computer apparatus, the at least one region in a manner that adjusts the perceived local depth in accordance with expected local depth in the imaged part of the head,wherein the at least one region of the image includes a reference feature between first and second head features, andwherein the transforming of the at least one region includes;
translating pixels of the at least one region in a first direction in a first image of the pair of images and in a second direction in a second image of the pair of images; and
resampling pixels of a second region adjacent the at least one region in both of the pair of images, the resampling including shifting pixels by respective distances that vary depending on respective distances from the at least one region.
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Abstract
In telecommunication video calling and videoconferencing systems, it is strongly desirable for remote observers to interact with natural gaze cues. In natural gaze interaction, the camera for a source observer appears to be co-located in the eye region of a destination observer image and vice versa. The appearance of camera co-location is achieved for stereoscopic camera pair that are placed either side of an autostereoscopic 3D display. Such cameras typically provide stereoscopic images that have disparity distributions that provide unnatural perceived head roundness. The present embodiments achieve perceived head roundness that is closer to that expected in natural face to face interaction by modification of perceived local depth in detected regions of the head.
287 Citations
22 Claims
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1. A method of adjusting perceived roundness in a stereoscopic pair of images that image a head, the method comprising processing one or each image by the following steps:
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identifying, by a computer apparatus, at least one region of the image that images a part of the head; and locally transforming, by the computer apparatus, the at least one region in a manner that adjusts the perceived local depth in accordance with expected local depth in the imaged part of the head, wherein the at least one region of the image includes a reference feature between first and second head features, and wherein the transforming of the at least one region includes; translating pixels of the at least one region in a first direction in a first image of the pair of images and in a second direction in a second image of the pair of images; and resampling pixels of a second region adjacent the at least one region in both of the pair of images, the resampling including shifting pixels by respective distances that vary depending on respective distances from the at least one region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer readable medium storing a computer-executable program, the computer-executable program, when executed, causing a computer apparatus to adjust a stereoscopic pair of images that image a head by performing the following steps:
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processing one or each image by the following steps; identifying at least one region of the image that images a part of the head; and locally transforming the at least one region in a manner that adjusts the perceived local depth in accordance with expected local depth in the imaged part of the head, wherein the at least one region of the image includes a reference feature between first and second head features, and wherein the transforming of the at least one region includes; translating pixels of the at least one region in a first direction in a first image of the pair of images and in a second direction in a second image of the pair of images; and resampling pixels of a second region adjacent the at least one region in both of the pair of images, the resampling including shifting pixels by respective distances that vary depending on respective distances from the at least one region.
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21. A device for adjusting perceived roundness in a stereoscopic pair of images that image a head, the device comprising at least one computer apparatus arranged to process one or each image by:
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identifying, by the computer apparatus, at least one region of the image that images a part of the head; locally transforming, by the computer apparatus, the at least one region in a manner that adjusts the perceived local depth in accordance with expected local depth in the imaged part of the head, wherein the at least one region of the image includes a reference feature between first and second head features, and wherein the transforming of the at least one region includes; translating pixels of the at least one region in a first direction in a first image of the pair of images and in a second direction in a second image of the pair of images; and resampling pixels of a second region adjacent the at least one region in both of the pair of images, the resampling including shifting pixels by respective distances that vary depending on respective distances from the at least one region. - View Dependent Claims (22)
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Specification