Resolution conversion upon hierarchical coding and decoding
First Claim
Patent Images
1. A decoding method of decoding encoded image data which has been hierarchically encoded in advance, comprising:
- determining a size of an image to be outputted; and
decoding the encoded image data up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size.
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Abstract
In a decoding method of decoding encoded image data which has been hierarchically encoded in advance, a size of an image to be outputted is determined, and then the encoded image data is decoded up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size.
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Citations
85 Claims
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1. A decoding method of decoding encoded image data which has been hierarchically encoded in advance, comprising:
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determining a size of an image to be outputted; and
decoding the encoded image data up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A decoding apparatus for decoding encoded image data which has been hierarchically encoded in advance, comprising:
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a determination unit that determines a size of an image to be outputted; and
a decoding unit that decodes the encoded image data up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size.
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13. An encoding method of hierarchically encoding an image, comprising:
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determining a size of an image to be outputted; and
encoding the image up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 23)
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22. An encoding apparatus for hierarchically encoding an image, comprising:
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a determination unit that determines a size of an image to be outputted; and
an encoding unit that encodes the image up to a layer of hierarchy which is at least one layer more than a minimum number of layer/layers of hierarchy necessary to acquire an image of the determined size.
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24. An encoding method of hierarchically encoding an image, comprising:
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restraining a frequency component which causes alias of an image signal of the image at the time of separating the image signal into layers of hierarchy; and
separating the restrained image signal into layers of hierarchy. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 52)
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38. An encoding apparatus for hierarchically encoding an image, comprising:
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a frequency restraining unit that restrains a frequency component which causes alias of an image signal of the image at the time of separating the image signal into layers of hierarchy; and
a separating unit that separates the image signal restrained by said frequency restraining unit into layers of hierarchy. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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53. A decoding method of decoding encoded image data which has been hierarchically encoded in advance, comprising:
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determining a layer of hierarchy up to which the encoded image data is to be decoded;
decoding the encoded image data up to the determined layer;
judging whether or not the determined layer corresponds to the highest layer of hierarchy of the encoded image data; and
restraining, when the determined layer does not correspond to the highest layer, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (56, 59, 62, 65, 83)
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54. A decoding method of decoding encoded image data which has been hierarchically encoded in advance, comprising:
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decoding all of the encoded image data;
judging whether or not the encoded image data was obtained as a result of encoding all layers of hierarchy; and
restraining, when all the layers of hierarchy have not been encoded, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (57, 60, 63, 66, 84)
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55. A decoding method of decoding encoded image data which has been hierarchically encoded in advance, comprising:
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inputting encoded image data from external;
determining a layer of hierarchy up to which the encoded image data is to be decoded;
decoding the encoded image data up to the determined layer;
judging whether or not all layers of hierarchy of the encoded image data have been decoded; and
restraining, when all the layers of hierarchy have not been decoded, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (58, 61, 64, 67, 85)
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68. A decoding apparatus for decoding encoded image data which has been hierarchically encoded in advance, comprising:
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a determination unit that determines a layer of hierarchy up to which the encoded image data is to be decoded;
a decoder which decodes the encoded image data up to the determined layer;
a judging unit that judges whether or not the determined layer corresponds to the highest layer of hierarchy of the encoded image data; and
a restraining unit that restrains, when the determined hierarchy does not corresponds to the highest layer, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (71, 74, 77, 80)
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69. A decoding apparatus for decoding encoded image data which has been hierarchically encoded in advance, comprising:
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a decoder that decodes all of the encoded image data;
a judging unit which judges whether or not the encoded image data was obtained as a result of encoding all layers of hierarchy; and
a restraining unit that restrains, when all the layers of hierarchy have not been encoded, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (72, 75, 78, 81)
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70. A decoding apparatus for decoding encoded image data which has been hierarchically encoded in advance, comprising:
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an input unit that inputs encoded image data from external;
a determination unit that determines a layer of hierarchy up to which the encoded image data is to be decoded;
a decoder that decodes the encoded image data up to the determined layer;
a judging unit that judges whether or not all layers of hierarchy of the encoded image data have been decoded; and
a restraining unit that restrains, when all the layers of hierarchy have not been decoded, a frequency component, which causes alias, of the decoded image data. - View Dependent Claims (73, 76, 79, 82)
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Specification