| 摘要 |
An optimum data arrangement is provided such that each apparatus can efficiently deal with image data encoded using discrete wavelet transform. For that purpose, an image processing apparatus includes an input device for inputting first entropy encoded data. The first entropy encoded data is obtained by peforming entropy encoding of transform coefficients of a first data arrangement. The transform coefficients of the first data arrangement are obtained by performing wavelet transform of a predetermined image in each first unit. The apparatus also includes an arrangement changing device for performing entropy decoding of the first entropy encoded data, and changing the obtained transform coefficients of the first data arrangement into transform coefficients of a second data arrangement obtained by performing wavelet transform of the predetermined image in each second unit, and an entropy encoder for generating second entropy encoded data by performing entropy encoding of the transform coefficients of the second data arrangement.
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