Stereoscopic video encoding and decoding methods and apparatus
First Claim
1. A method of processing encoded frames of stereoscopic image data, the method comprising:
- decoding first and second encoded frames representing first and second eye images of an image pair to recover decoded first and second eye image data;
determining if one of said first and second eye images was subject to an entropy reduction operation prior to encoding;
when it is determined that that one of said first and second eye images was subject to an entropy reduction operation prior to encoding;
i) performing a sharpening operation, using decoded eye image data corresponding to the one of the first and second eye images which was subject to an entropy reduction operation, to produce a sharpened version of the entropy reduced image, said entropy reduced image being the one of the first and second eye images which was subject to an entropy reduction operation; and
ii) rendering a 3-D image from said sharpened version of the entropy reduced image and the decoded one of the first and second eye images which was not subject to an entropy reduction operation.
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Abstract
Methods and apparatus for stereoscopic image encoding and decoding are described. Left and right eye images are encoded following an entropy reduction operation being applied to one of the eye images when there is a difference between the left and right images of an image pair. Information about regions of negative parallax within the entropy reduced image of an image pair is encoded along with the images. Upon decoding a sharpening filter is applied to the image in an image pair which was subjected to the entropy reduction operation. In addition edge enhancement filtering is performed on the regions of the recovered entropy reduced image which are identified in the encoded image data as regions of negative parallax. Interleaving of left and right eye images at the input of the encoder combined with entropy reduction allows for efficient encoding, storage, and transmission of 3D images.
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Citations
18 Claims
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1. A method of processing encoded frames of stereoscopic image data, the method comprising:
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decoding first and second encoded frames representing first and second eye images of an image pair to recover decoded first and second eye image data; determining if one of said first and second eye images was subject to an entropy reduction operation prior to encoding; when it is determined that that one of said first and second eye images was subject to an entropy reduction operation prior to encoding; i) performing a sharpening operation, using decoded eye image data corresponding to the one of the first and second eye images which was subject to an entropy reduction operation, to produce a sharpened version of the entropy reduced image, said entropy reduced image being the one of the first and second eye images which was subject to an entropy reduction operation; and ii) rendering a 3-D image from said sharpened version of the entropy reduced image and the decoded one of the first and second eye images which was not subject to an entropy reduction operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for processing encoded frames of stereoscopic image data, the apparatus comprising:
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a decoder for decoding first and second encoded frames representing first and second eye images of an image pair to recover decoded first and second eye image data; an entropy reduction determinator for determining if one of said first and second eye images was subject to an entropy reduction operation prior to encoding; a sharpening filter for performing a sharpening operation, using decoded eye image data corresponding to the one of the first and second eye images which was subject to an entropy reduction operation, to produce a sharpened version of the entropy reduced image when it is determined that that one of said first and second eye images was subject to an entropy reduction operation prior to encoding, said entropy reduced image being the one of the first and second eye images which was subject to an entropy reduction operation; and a renderer for rendering a 3-D image from said sharpened version of the entropy reduced image and the decoded one of the first and second eye images which was not subject to an entropy reduction operation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification