RESOLUTION CONVERSION UPON HIERARCHICAL CODING AND DECODING
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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
80 Claims
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1-52. -52. (canceled)
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53. A decoding method of decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (56, 62)
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54. A decoding method of decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (57, 63)
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55. A decoding method of decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (58, 64)
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59-61. -61. (canceled)
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65-67. -67. (canceled)
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68. A decoding apparatus for decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (71, 77)
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69. A decoding apparatus for decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (72, 78)
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70. A decoding apparatus for decoding encoded image data which has been hierarchically encoded by subband coding 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 corresponds to alias occurred by separating the image data into layers of hierarchy, of the decoded image data. - View Dependent Claims (73, 79)
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74-76. -76. (canceled)
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80-85. -85. (canceled)
Specification