Method and apparatus for encoding and decoding video with respect to position of integer pixel
First Claim
Patent Images
1. A video decoding method comprising:
- obtaining a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a reference layer of a first view and a current layer of a second view;
determining a position of an integer pixel of a depth map image included in the reference layer corresponding to a position of one of an integer pixel and a sub-pixel, wherein the position is indicated by the disparity vector having components in the sub-pixel unit from a current pixel of a color image included in the current layer; and
decoding the color image of the current layer by using depth-related information related to a value in the depth map image on a candidate area of the depth map image included in the reference layer corresponding to the determined position of the integer pixel of the depth map image included in the reference layer.
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Abstract
Disclosed is a video decoding method including: obtaining a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a current layer and a reference layer; determining a position of an integer pixel of the reference layer corresponding to a position indicated by the disparity vector obtained from the position of a current pixel of the current layer; and decoding the image of the current layer by using prediction information on a candidate area of the reference layer corresponding to the determined position of the integer pixel.
40 Citations
11 Claims
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1. A video decoding method comprising:
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obtaining a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a reference layer of a first view and a current layer of a second view; determining a position of an integer pixel of a depth map image included in the reference layer corresponding to a position of one of an integer pixel and a sub-pixel, wherein the position is indicated by the disparity vector having components in the sub-pixel unit from a current pixel of a color image included in the current layer; and decoding the color image of the current layer by using depth-related information related to a value in the depth map image on a candidate area of the depth map image included in the reference layer corresponding to the determined position of the integer pixel of the depth map image included in the reference layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 11)
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8. A video encoding method comprising:
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determining a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a reference layer of a first view and a current layer of a second view; determining a position of an integer pixel of a depth map image included in the reference layer corresponding to a position of one of an integer pixel and a sub-pixel, wherein the position is indicated by the determined disparity vector having components in the sub-pixel unit from the position of a current pixel of a color image included in the current layer; and encoding the color image of the current layer by using depth-related information related to a value in the depth map image on a candidate area of the depth map image included in the reference layer corresponding to the determined position of the integer pixel of the depth map image included in the reference layer.
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9. A video decoding apparatus comprising:
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a disparity vector obtainer configured to obtain a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a reference layer of a first view and a current layer of a second view; an integer pixel position determiner configured to determine a position of an integer pixel of a depth map image included in the reference layer corresponding to a position of one of an integer pixel and a sub-pixel, wherein the position is indicated by the disparity vector having components in the sub-pixel unit obtained from a position of a current pixel of a color image included in the current layer; and a decoder configured to decode the color image of the current layer by using depth-related information related to a value in the depth map image on a candidate area of the depth map image included in the reference layer corresponding to the determined position of the integer pixel of the depth image included in the reference layer.
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10. A video encoding apparatus comprising:
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a disparity vector determiner configured to determine a disparity vector having components in sub-pixel unit for interlayer prediction between images belonging to a reference layer of a first view and a current layer of a second view; an integer pixel position determiner configured to determine a position of an integer pixel of a depth map image included in the reference layer corresponding to a position of one of an integer pixel and a sub-pixel, wherein the position is indicated by the determined disparity vector having components in the sub-pixel unit from a position of a current pixel of a color image included in the current layer; and an encoder configured to encode the color image of the current layer by using depth-related information related to a value in the depth map image on a candidate area of the depth map image included in the reference layer corresponding to the determined position of the integer pixel of the depth image included in the reference layer.
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Specification