OpenJPEG
1.5.1
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Implementation of a discrete wavelet transform (DWT) More...
Go to the source code of this file.
Functions | |
Exported functions | |
void | dwt_encode (opj_tcd_tilecomp_t *tilec) |
Forward 5-3 wavelet tranform in 2-D. More... | |
opj_bool | dwt_decode (opj_tcd_tilecomp_t *tilec, int numres) |
Inverse 5-3 wavelet tranform in 2-D. More... | |
int | dwt_getgain (int orient) |
Get the gain of a subband for the reversible 5-3 DWT. More... | |
double | dwt_getnorm (int level, int orient) |
Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT. More... | |
void | dwt_encode_real (opj_tcd_tilecomp_t *tilec) |
Forward 9-7 wavelet transform in 2-D. More... | |
opj_bool | dwt_decode_real (opj_tcd_tilecomp_t *tilec, int numres) |
Inverse 9-7 wavelet transform in 2-D. More... | |
int | dwt_getgain_real (int orient) |
Get the gain of a subband for the irreversible 9-7 DWT. More... | |
double | dwt_getnorm_real (int level, int orient) |
Get the norm of a wavelet function of a subband at a specified level for the irreversible 9-7 DWT. More... | |
void | dwt_calc_explicit_stepsizes (opj_tccp_t *tccp, int prec) |
Explicit calculation of the Quantization Stepsizes. More... | |
Implementation of a discrete wavelet transform (DWT)
The functions in DWT.C have for goal to realize forward and inverse discret wavelet transform with filter 5-3 (reversible) and filter 9-7 (irreversible). The functions in DWT.C are used by some function in TCD.C.