Data compression and decompression method on basis of orthogonal wavelet packet transform and rotating door algorithm
A technology of wavelet packet transformation and revolving door algorithm, which is applied in the direction of code conversion and electrical components, can solve the problem of poor compression effect of non-stationary signal data, achieve the effect of reducing storage space, improving compression ratio, and reducing real-time data noise
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[0047] The present invention will be further described below in conjunction with the accompanying drawings.
[0048] Such as figure 1 As shown, the two-stage data compression and decompression method based on orthogonal wavelet packet transform and revolving door algorithm of the present invention comprises the following steps:
[0049] (1) Perform orthogonal wavelet packet transformation on the original data to obtain wavelet packet coefficients;
[0050] (2) Perform threshold processing on the wavelet packet coefficients obtained in step (1);
[0051] (3) The revolving door algorithm is used to perform two-stage compression on the wavelet packet coefficients after threshold processing.
[0052] Decompressing the compressed data includes the following steps:
[0053] (4) Carry out linear interpolation on the compressed data to restore the first-level compressed data;
[0054] (5) Perform orthogonal wavelet packet reconstruction on the first-level compressed data to obtain...
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