METHOD AND APPARATUS FOR INTER PREDICTION ENCODING/DECODING AN IMAGE USING SUB-PIXEL MOTION ESTIMATION
First Claim
Patent Images
1. A method of inter prediction encoding of an image, the method comprising:
- searching for a first reference block in a reference picture by using a current block, and estimating a first motion vector in a first pel unit in regards to the first reference block;
estimating a second motion vector by using pixels included in a pre-encoded area adjacent to the current block, and pixels adjacent to the first reference block, and determining a second reference block based on the second motion vector; and
encoding the current block based on the first motion vector and the second reference block.
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Abstract
A method of inter prediction encoding of an image, the method including: searching for a first reference block in a reference picture by using a current block, and estimating a first motion vector in a first pel unit in regards to the first reference block; estimating a second motion vector by using pixels included in a pre-encoded area adjacent to the current block, and pixels adjacent to the first reference block, and determining a second reference block based on the second motion vector; and encoding the current block based on the first motion vector and the second reference block.
87 Citations
26 Claims
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1. A method of inter prediction encoding of an image, the method comprising:
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searching for a first reference block in a reference picture by using a current block, and estimating a first motion vector in a first pel unit in regards to the first reference block; estimating a second motion vector by using pixels included in a pre-encoded area adjacent to the current block, and pixels adjacent to the first reference block, and determining a second reference block based on the second motion vector; and encoding the current block based on the first motion vector and the second reference block. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of inter prediction decoding an image, the method comprising:
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receiving a bitstream including data about a current block, and, from the received bitstream, extracting data about a first motion vector in a first pel unit and data about a residual block of the current block; determining a first reference block according to the first motion vector, and determining a second reference block by using pixels included in a pre-decoded area adjacent to the current block and pixels adjacent to the first reference block; and restoring the current block based on the second reference block and the residual block. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for inter prediction encoding an image, the apparatus comprising:
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a first motion estimator which searches for a first reference block in a reference picture by using a current block, and estimates a first motion vector in a first pel unit in regards to the first reference block; a second motion estimator which estimates a second motion vector by using pixels included in a pre-encoded area adjacent to the current block and pixels adjacent to the first reference block; a motion compensator which determines a second reference block based on to the second motion vector; and an encoder which encodes the current block based on the first motion vector and the second reference block. - View Dependent Claims (17, 18, 19)
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20. An apparatus for inter prediction decoding an image, the apparatus comprising:
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a decoder which receives a bitstream including data about a current block, and, from the received bitstream, extracts data about a first motion vector in a first pel unit and a residual block of the current block; a motion compensator which determines a first reference block according to the first motion vector, and determines a second reference block by using pixels included in a pre-decoded area adjacent to the current block and pixels adjacent to the first reference block; and a restorer which restores the current block based on the determined second reference block and the residual block. - View Dependent Claims (21, 22, 23, 24)
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25. A computer readable recording medium having recorded thereon a set of instructions for enabling a computer to implement a method comprising:
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searching for a first reference block in a reference picture by using a current block, and estimating a first motion vector in a first pel unit in regards to the first reference block; estimating a second motion vector by using pixels included in a pre-encoded area adjacent to the current block, and pixels adjacent to the first reference block, and determining a second reference block based on the second motion vector; and encoding the current block based on the first motion vector and the second reference block
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26. A computer readable recording medium having recorded thereon a set of instructions for enabling a computer to implement a method comprising:
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receiving a bitstream including data about a current block, and, from the received bitstream, extracting data about a first motion vector in a first pel unit and data about a residual block of the current block; determining a first reference block according to the first motion vector, and determining a second reference block by using pixels included in a pre-decoded area adjacent to the current block and pixels adjacent to the first reference block; and restoring the current block based on the second reference block and the residual block.
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Specification