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func_DWT(I, level, Lo_D, Hi_D... Matlab implementation of SPIHT (without Arithmatic coding stage)
func_InvDWT(I_W, S, Lo_R, Hi_... Matlab implementation of SPIHT (without Arithmatic coding stage)
func_Myappcoef2(c,s,varargin) APPCOEF2 Extract 2-D approximation coefficients.
func_Mywavedec2(x,n,varargin) WAVEDEC2 Multilevel 2-D wavelet decomposition.
func_Mywaverec2(c,s,varargin) WAVEREC2 Multilevel 2-D wavelet reconstruction.
func_decode_refine(img_waveda... % img_wavedata_dec: input wavelet coefficients
func_decode_significancemap(i... img_wavedata_dec: input wavelet coefficients
func_dominant_pass(img_waveda... % img_wavedata: wavelet coefficients, if this step is not using the initial theshold
func_ezw_decode(dim, threshol... dim: dimension of the wavelet matrix to reconstruct
func_ezw_demo_main % main program to run this demo
func_ezw_enc(img_wavedata,ezw... img_wavedata: wavelet coefficients to encode
func_huffman_decode(img_ezw_s...
func_huffman_encode(significa...
func_morton(pos,n); The matrix should be n by n
func_rearrange_list(orig_list... orig_list: original subordinate list, this is the old subordinate list
func_subordinate_pass(subordi... % subordinate_list: current subordinate list containing coefficietns that are
func_treemask(x,y,dim); x, y is the position in the matrix of the node where the EZW tree
func_treemask_inf(x, y, dim); x y is the position in the matrix of the node where the EZW tree
readme.m
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4.8 | 6 ratings Rate this file 53 Downloads (last 30 days) File Size: 71.88 KB File ID: #19296

EZW (Embedded Zerotree Wavelet)

22 Mar 2008 (Updated 24 Mar 2008)

Matlab implementation of EZW (Embedded Zerotree Wavelet)

File Information
Description	Matlab implementation of EZW (Embedded Zerotree Wavelet)
MATLAB release	MATLAB 7.0.1 (R14SP1)

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Everyone's Tags	compression(3), embedded zerotree(3), ezw(4), wavelet(3)
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Comments and Ratings (6)
22 May 2008	Dong Li	nice code
15 Feb 2010	Naveed Abbasi	good job...
22 Mar 2010	Karthik Muthuswamy	Nice piece of code. Thanks for sharing!
24 Sep 2010	ali reza	nice program. thank you very much...
24 Mar 2011	Sunith Nagireddy
09 Oct 2011	Jan Stolarek	Good code, clearly written and well commented but not optimized. After two days of refactoring I've managed to speed it up 2 times.

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