IMAGE CODING METHOD AND APPARATUS USING SIDE MATCHING PROCESS AND IMAGE DECODING METHOD AND APPARATUS FOR THE SAME
First Claim
Patent Images
1. A method of coding an image, the method comprising:
- determining at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be coded in a predetermined search area;
determining a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and
coding an image using a difference value obtained from a difference between the predicted block and the current block.
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Abstract
A method and apparatus for coding an image capable of performing a prediction coding process by using a correlation degree between neighboring pixels of a current block and neighboring pixels of a reference block, and an image decoding method and apparatus. In the method, reference block candidates having neighboring pixels similar to the neighboring pixels of the current block are selected, matching errors between selected reference block candidates and the current block are calculated, and a reference block candidate having the least matching error is determined to be a predicted block of the current block.
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Citations
24 Claims
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1. A method of coding an image, the method comprising:
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determining at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be coded in a predetermined search area; determining a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and coding an image using a difference value obtained from a difference between the predicted block and the current block. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for coding an image, the apparatus comprising:
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a prediction unit which determines at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be coded in a predetermined search area and which determines a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and a coding unit which codes an image by using a difference value obtained from a difference between the predicted block and the current block. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of decoding an image, the method comprising:
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determining at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be decoded in a predetermined search area; determining a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and decoding an image by using the predicted block of the current block and a difference value obtained from a difference between the predicted block and the current block included in a bitstream. - View Dependent Claims (14, 15, 16, 17)
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18. An apparatus for decoding an image, the apparatus comprising:
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a prediction unit which determines at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block to be decoded in a predetermined search area and which determines a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and a decoding unit which decodes the image by using the predicted block of the current block and a difference value obtained from a difference between the predicted block and the current block included in a bitstream. - View Dependent Claims (19, 20, 21, 22)
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23. A computer readable recording medium having recorded thereon a computer program for executing a method of coding an image, the method comprising:
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determining at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be coded in a predetermined search area; determining a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and coding an image using a difference value obtained from a difference between the predicted block and the current block.
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24. A computer readable recording medium having recorded thereon a computer program for executing a method of decoding an image, the method comprising:
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determining at least one reference block candidate having neighboring pixels similar to neighboring pixels of a current block that is to be decoded in a predetermined search area; determining a reference block candidate that is most similar to the current block among the reference block candidates as a predicted block of the current block; and decoding an image by using the predicted block of the current block and a difference value obtained from a difference between the predicted block and the current block included in a bitstream.
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Specification