Description of slbenchmark_batchfilter

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slbenchmark_batchfilter

PURPOSE

SLBENCHMARK_BATCHFILTER Compares the efficiency of batch filter

SYNOPSIS

function recs = slbenchmark_batchfilter(imgsiz, nimgs, filtersiz, nfilters)

DESCRIPTION

SLBENCHMARK_BATCHFILTER Compares the efficiency of batch filter

 Input:
   imgsiz:     the size of each image
   nimgs:      the number of images
   filtersiz:  The size of each filter
   nfilters:   the list of numbers of filters

 History
   - Created by Dahua Lin, on Sep 2nd, 2006

CROSS-REFERENCE INFORMATION

This function calls:

• disp DISP displays the dataset fields
• slapplyfilterband SLAPPLYFILTERBAND Applies filter band to filter images in batch

This function is called by:

SUBFUNCTIONS

• function test_imfilter(imgs, fb)
• function test_slband(imgs, fb)

SOURCE CODE

0001 function recs = slbenchmark_batchfilter(imgsiz, nimgs, filtersiz, nfilters)
0002 %SLBENCHMARK_BATCHFILTER Compares the efficiency of batch filter
0003 %
0004 % Input:
0005 %   imgsiz:     the size of each image
0006 %   nimgs:      the number of images
0007 %   filtersiz:  The size of each filter
0008 %   nfilters:   the list of numbers of filters
0009 %
0010 % History
0011 %   - Created by Dahua Lin, on Sep 2nd, 2006
0012 
0013 
0014 imgs = rand([imgsiz, nimgs]);
0015 fb = rand([filtersiz, max(nfilters)]);
0016 
0017 names = {'imfilter', 'slapplyfilerband'};
0018 methods = {@test_imfilter, @test_slband};
0019 nmethods = length(names);
0020 
0021 recs = zeros(length(nfilters), nmethods);
0022 
0023 for k = 1 : nmethods
0024     
0025     curname = names{k};
0026     curmethod = methods{k};
0027     
0028     disp(['Test ', curname]);
0029     
0030     for i = 1 : length(nfilters)
0031         nf = nfilters(i);
0032         tic;
0033         curmethod(imgs, fb(:,:,1:nf));        
0034         recs(i, k) = toc;        
0035     end        
0036 end
0037 
0038 recs = recs / nimgs;
0039 
0040 
0041 function test_imfilter(imgs, fb)
0042 
0043 nf = size(fb ,3);
0044 R = zeros([size(imgs), nf]);
0045 for i = 1 : nf
0046     R(:,:,:,i) = imfilter(imgs, fb(:,:,i), 'replicate');
0047 end
0048 clear R;
0049 
0050 function test_slband(imgs, fb)
0051 
0052 fh = size(fb, 1);
0053 fw = size(fb, 2);
0054 R = slapplyfilterband(imgs, fb, [fh, fw]);
0055 clear R;
0056 
0057 
0058 
0059 
0060 
0061 
0062 
0063 
0064 
0065 
0066

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