| 摘要 |
A method of encoding data comprises the steps of dividing the data into sets of data, transforming each set of data into a set of transform coefficients (A, B, C), assigning each transform coefficient to a single sub-set (S0, S1, . . . ) of the respective set of transform coefficients in dependence of its magnitude, and encoding each sub-set separately. The method may include the step of comparing the magnitudes of the transform coefficients of each set with at least one threshold value (T1, T2, . . . ). As each sub-set contains the entire magnitude of selected transform coefficients, the loss of another sub-set during transmission has no effect on these transform coefficients. The method is particularly suitable for encoding picture data.
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