| 摘要 |
A coding method according to an implementation of the present invention includes: transforming an input signal to generate a transformed output signal (S110); quantizing the transformed output signal to generate a quantized coefficient (S120); and entropy coding the quantized coefficient to generate a coded signal (S130), and the transforming (S110) includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient (S112); and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal that is a part of the first transformed output signal (S116), and in the entropy coding (S130), the second transform coefficient or a second inverse transform coefficient is compression coded by calculating a difference between a predetermined value and an element included in the second transform coefficient or a second inverse transform coefficient, and compression coding the calculated difference.
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