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<a href="http://www.mathworks.com/matlabcentral/">MATLAB Central</a> >
<a href="http://www.mathworks.com/matlabcentral/fileexchange/loadCategory.do">File Exchange</a> > <a href="http://www.mathworks.com/matlabcentral/fileexchange/loadCategory.do?objectId=26&objectType=Category">Image Processing</a> > <a href="http://www.mathworks.com/matlabcentral/fileexchange/loadCategory.do?objectId=129&objectType=Category">Compression</a> > IMAGE COMPRESSION & RECONSTRUCTION OF IMAGES
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<tbody><tr><td class="headercell" height="20" width="70%"> IMAGE COMPRESSION & RECONSTRUCTION OF IMAGES
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<td valign="top"><b>Rating:</b>
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<img src="loadFile.do_files/fullstar.gif" alt="" height="12" hspace="1" width="12"><img src="loadFile.do_files/fullstar.gif" alt="" height="12" hspace="1" width="12"><img src="loadFile.do_files/fullstar.gif" alt="" height="12" hspace="1" width="12"><img src="loadFile.do_files/fullstar.gif" alt="" height="12" hspace="1" width="12"><img src="loadFile.do_files/fullstar_grey.gif" alt="" height="12" hspace="1" width="12">
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<td valign="top"><b>Code Metrics:</b></td>
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<td><img src="loadFile.do_files/30th.png" title="Complexity (35th percentile, raw score: 12)" border="0" height="10" width="11"></td>
<td><img src="loadFile.do_files/30th.png" title="M-Lint (38th percentile, raw score: 2.0)" border="0" height="10" width="11"></td>
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<img src="loadFile.do_files/question.gif" alt="" border="0" height="11" width="9"> <a href="http://www.mathworks.com/matlabcentral/fileexchange/codeMetricsPopup.jsp" onclick="window.open(this.href,'small','toolbar=no,resizable=yes,status=yes,menu=no,scrollbars=yes,width=571,height=450');return false;" class="small">What is this?</a>
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<td valign="top" width="89"><b>Author:</b></td>
<td colspan="2"><a href="http://www.mathworks.com/matlabcentral/fileexchange/loadAuthor.do?objectType=author&objectId=1095253">BABY VIJILIN</a></td>
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<td height="15" valign="top" width="10"> </td>
<td height="15" valign="top" width="89"><b>Summary:</b></td>
<td colspan="2" height="15">PROGRAM DECOMPOSE IMAGE,COMPRESS IT, RECONSTRUCTION IS PERFORMED.</td>
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<td height="15" valign="top" width="125"><b>MATLAB Release:</b></td>
<td colspan="2" height="15" valign="bottom">R14SP3</td>
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<td height="15" valign="top" width="10"> </td>
<td height="15" valign="top" width="125"><b>Required Products:</b></td>
<td colspan="2" height="15">Image Processing Toolbox,Wavelet Toolbox</td>
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<td valign="top" width="135"><b>Description:</b></td>
<td class="lnwrp" width="456">
This program compress and recostruct using wavelets. We can select
level of decomposition(here maximum 4 levels are given) of images using
selected wavelet.<br>
For eg:-wavelets can be haar, db1, db2,dmey...............<br>
Decomposition can be viewed in figure.<br>
(Please note that select 256X256 image for better result.)<br>
Then compression can performed, <br>
PERFL2 give compression score.<br>
Then reconstruction can be performed.<br>
Each decompsition we can choose different threshold values.<br>
For each threshold value we can calculate mse,psnr,pq(picture quality),<br>
bit ratio etc. To get pq install pqs function . <br>
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<input name="fileId" value="12581" type="hidden">
<input name="fileName" value="vi2" type="hidden">
<input name="fileExt" value=".zip" type="hidden">
<input name="contributorId" value="1095253" type="hidden">
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<td width="286"> <b class="feh4blk"> File Details</b></td>
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<td colspan="2"><img src="loadFile.do_files/blue_band_536x5.gif" alt="" height="5" width="536"></td>
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<td valign="top" width="25%"><b>File Id:</b></td>
<td width="20%">12581</td>
<td valign="top" width="25%"><b>Average rating:</b></td>
<td width="29%">4.17</td>
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<td valign="top"> </td>
<td valign="top"><b>Size:</b></td>
<td>3 KB</td>
<td valign="top"><b># of reviews:</b></td>
<td>10</td>
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<td valign="top"> </td>
<td valign="top"><b>Submitted:</b></td>
<td>2006-10-10</td>
<td valign="top"><b>Downloads:</b></td>
<td>4168</td>
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<td valign="top"> </td>
<td valign="top"><b>Subscribers:</b></td>
<td>1</td>
<td colspan="2"> </td>
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<tr bgcolor="#f4f4f4">
<td> </td>
<td valign="top"><b>Keywords:</b></td>
<td colspan="3" valign="top">DECOMPOSITION,COMPRESSION,RECONSTRUCTION,DIFFERENT THRESHOLDS,QUALITY</td>
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<td> </td>
<td valign="top"><b>Other Requirements:</b></td>
<td colspan="3" valign="top">pqs function</td>
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<td valign="top" width="10"> </td>
<td colspan="4" valign="top"> </td>
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<td> </td>
<td valign="top"><b>Zip file contents:</b></td>
<td colspan="3" valign="top">pqs.m, vi2.m</td>
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<br>
<!--Acknowledgements -->
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<td width="286"> <b class="feh4blk"> Acknowledgements</b></td>
<td width="228"> </td>
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<td colspan="2"><img src="loadFile.do_files/blue_band_536x5.gif" alt="" height="5" width="536"></td>
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<td colspan="2">The author wishes to acknowledge the following in the creation of this submission: </td>
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<td colspan="2">
<a href="http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=8755&objectType=FILE">Wavelet Based Image Compression implementation using SOFM</a><br>
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<td></td>
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<!--Acknowledgements -->
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