📄 qccwavsubbandpyramid3dintshapeadaptivedwt.3
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.TH QCCWAVSUBBANDPYRAMID3DINTSHAPEADAPTIVEDWT 3 "QCCPACK" "".SH NAMEQccWAVSubbandPyramid3DIntShapeAdaptiveDWT,QccWAVSubbandPyramid3DIntInverseShapeAdaptiveDWT \- separable 3D shape-adaptive discrete wavelet transform and inverse transformfor integer-valued subband-pyramid data.SH SYNOPSIS.B #include "libQccPack.h".sp.BI "int QccWAVSubbandPyramid3DIntShapeAdaptiveDWT(QccWAVSubbandPyramid3DInt *" subband_pyramid ", QccWAVSubbandPyramid3DInt *" mask ", int " transform_type ", int " temporal_num_levels ", int " spatial_num_levels ", const QccWAVWavelet *" wavelet );.br.BI "int QccWAVSubbandPyramid3DIntInverseShapeAdaptiveDWT(QccWAVSubbandPyramid3DInt *" subband_pyramid ", QccWAVSubbandPyramid3DInt *" mask ", const QccWAVWavelet *" wavelet );.SH DESCRIPTION.B QccWAVSubbandPyramid3DIntShapeAdaptiveDWT()performs a separable 3D shape-adaptivediscrete wavelet transform (SA-DWT) on the.I volumefield of.IR subband_pyramid ..IR transform_typedetermines whether the transform is a dyadic or wavelet-packetdecomposition. For a dyadic decomposition,.IR transform_typeshould be.BR QCCWAVSUBBANDPYRAMID3DINT_DYADIC ;for a wavelet-packet decomposition,.IR transform_typeshould be.BR QCCWAVSUBBANDPYRAMID3DINT_PACKET ..B QccWAVSubbandPyramid3DIntShapeAdaptiveDWT()implements the wavelet transform with a call to.BR QccWAVWaveletShapeAdaptiveDyadicDWT3DInt (3)or.BR QccWAVWaveletShapeAdaptivePacketDWT3DInt (3)as appropriate.LPIf a dyadic decomposition is chosen.RI ( transform_typeequal to.BR QCCWAVSUBBANDPYRAMID3DINT_DYADIC ),.I spatial_num_levelsand.I temporal_num_levelsmust be set to the same value which indicatesthe number of levels (scales) of dyadic decomposition to perform.In this case, both the .I spatial_num_levelsand.I temporal_num_levelsfields of.I subband_pyramidare set to this value.Alternatively, if a wavelet-packet decomposition is chosen.RI ( transform_typeequal to.BR QCCWAVSUBBANDPYRAMID3DINT_PACKET ),then.I spatial_num_levelsand.I temporal_num_levelsmay be different and indicate the number of spatial decompositions andtemporal decompositions, respectively, performed whencalculating the wavelet-packet transform..LP.IR maskis the transparency mask defining the shape of the data to be transformed;the.I volumefield of.I maskis passed as the transparency mask to.BR QccWAVWaveletShapeAdaptiveDyadicDWT3DInt (3)or.BR QccWAVWaveletShapeAdaptivePacketDWT3DInt (3).During the process of performing the 3D SA-DWT, the.I maskis transformed with a Lazy wavelet transform so as to correctly indicatewhere valid coefficients reside in the wavelet domain in the transformed.IR subband_pyramid .The transformed mask is return in.I maskupon completion of.BR QccWAVWaveletSubbandPyramid3DIntShapeAdaptiveDWT() ..LP.BR QccWAVSubbandPyramid3DIntInverseShapeAdaptiveDWT()calls.BR QccWAVWaveletInverseShapeAdaptiveDyadicDWT3DInt (3)or.BR QccWAVWaveletInverseShapeAdaptivePacketDWT3DInt (3)to perform a separable 3D inverse SA-DWT on the.I volumefield of.IR subband_pyramid .The.IR transform_typefield of.IR subband_pyramid indicates the type (dyadic or wavelet-packet) of transform,while the numbers of levels of the inverse transform is retrieved from the.I spatial_num_levelsand.I temporal_num_levelsfields of.IR subband_pyramid .Both.I spatial_num_levelsand.I temporal_num_levelsare set to 0 upon return of.BR QccWAVSubbandPyramid3DIntInverseShapeAdaptiveDWT() ..I maskshould be the Lazy-wavelet transformed mask that was output by.BR QccWAVWaveletSubbandPyramid3DIntShapeAdaptiveDWT() .Upon return from.BR QccWAVSubbandPyramid3DIntInverseShapeAdaptiveDWT() ,.I maskis the original transparency mask; i.e., the mask thatindicates where valid data resides in the original spatial domain..SH "RETURN VALUES"These routinesreturn 0 on success and 1 on error..SH "SEE ALSO".BR QccWAVWaveletShapeAdaptiveDyadicDWT3DInt (3),.BR QccWAVWaveletInversShapeAdaptiveDyadicDWT3DInt (3),.BR QccWAVWaveletShapeAdaptivePacketDWT3DInt (3),.BR QccWAVWaveletInversShapeAdaptivePacketDWT3DInt (3),.BR QccWAVWavelet (3),.BR QccPackWAV (3),.BR QccPack (3).LPA. R. Calderbank, I. Daubechies, W. Sweldens, B.-L. Yeo, "LosslessImage Compression Using Integer to Integer Wavelet Transforms", in.IR "Proceedings of the International Conference on Image Processing" ,Lausanne, Switzerland, pp. 596-599, September 1997.Z. Xiong, X. Wu, S. Cheng, J. Hua, "Lossy-to-Lossless Compression ofMedical Volumetric Data Using Three-Dimensional Integer Wavelet Transforms,".IR "IEEE Transactions on Medical Imaging" ,vol. 22, pp. 459-470, March 2003.S. Li and W. Li, "Shape-Adaptive Discrete Wavelet Transforms forArbitrarily Shaped Visual Object Coding,".IR "IEEE Transactions on Circuits and Systems for Video Coding" ,vol. 10, pp. 725-743, August 2000..LPISO/IEC 14496-2, "Information Technology -- Coding of audio-visual objects --Part 2: Visual," .IR "MPEG-4 Standard" ,Amendment 1, July 2000.B.-J. Kim, Z. Xiong, and W. A. Pearlman,"Low Bit-Rate Scalable Video Coding with 3-D Set Partitioningin Hierarchical Trees (3-D SPIHT),".IR "IEEE Transactions on Circuits and Systems for Video Technology" ,vol. 10, no. 8, pp. 1374-1387, December 2000..SH AUTHORCopyright (C) 1997-2009 James E. Fowler.\" The programs herein are free software; you can redistribute them an.or.\" modify them under the terms of the GNU General Public License.\" as published by the Free Software Foundation; either version 2.\" of the License, or (at your option) any later version..\" .\" These programs are distributed in the hope that they will be useful,.\" but WITHOUT ANY WARRANTY; without even the implied warranty of.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the.\" GNU General Public License for more details..\" .\" You should have received a copy of the GNU General Public License.\" along with these programs; if not, write to the Free Software.\" Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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