int QccWAVSubbandPyramid3DDWT(QccWAVSubbandPyramid3D
*subband_pyramid, int transform_type, int temporal_num_levels, int spatial_num_levels,
const QccWAVWavelet *wavelet);
int QccWAVSubbandPyramid3DInverseDWT(QccWAVSubbandPyramid3D
*subband_pyramid, const QccWAVWavelet *wavelet);
If a dyadic decomposition is chosen (transform_type equal to QCCWAVSUBBANDPYRAMID3D_DYADIC), spatial_num_levels and temporal_num_levels must be set to the same value which indicates the number of levels (scales) of dyadic decomposition to perform. In this case, both the spatial_num_levels and temporal_num_levels fields of subband_pyramid are set to this value. Alternatively, if a wavelet-packet decomposition is chosen (transform_type equal to QCCWAVSUBBANDPYRAMID3D_PACKET), then spatial_num_levels and temporal_num_levels may be different and indicate the number of spatial decompositions and temporal decompositions, respectively, performed when calculating the wavelet-packet transform.
The origin_frame, origin_row, origin_col, subsample_pattern_frame, subsample_pattern_row, and subsample_pattern_col parameters as needed for QccWAVWaveletDyadicDWT3D(3) or QccWAVWaveletPacketDWT3D(3) are extracted from the corresponding fields of subband_pyramid.
QccWAVSubbandPyramid3DInverseDWT() calls QccWAVWaveletInverseDyadicDWT3D(3) or QccWAVWaveletInversePacketDWT3D(3) to perform a separable 3D inverse DWT on the volume field of subband_pyramid. The transform_type field of subband_pyramid indicates the type (dyadic or wavelet-packet) of transform, while the numbers of levels of the inverse transform is retrieved from the spatial_num_levels and temporal_num_levels fields of subband_pyramid. Both spatial_num_levels and temporal_num_levels are set to 0 upon return of QccWAVSubbandPyramid3DInverseDWT().
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M. Antonini, M. Barlaud, P. Mathieu, and I. Daubechies, "Image Coding Using Wavelet Transform," IEEE Transactions on Image Processing, vol. 1, pp. 205-220, April 1992.
I. Daubechies and W. Sweldens, "Factoring Wavelet Transforms Into Lifting Steps," J. Fourier Anal. Appl., vol. 4, no. 3, pp. 245-267, 1998.