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%--------------------------------------------------------------------------
% This file is part of the ASTRA Toolbox
%
% Copyright: 2010-2016, iMinds-Vision Lab, University of Antwerp
% 2014-2016, CWI, Amsterdam
% License: Open Source under GPLv3
% Contact: astra@uantwerpen.be
% Website: http://www.astra-toolbox.com/
%--------------------------------------------------------------------------
classdef StatisticsDefault < matlab.mixin.Copyable
% Default policy class for statistics for DART.
properties (Access=public)
pixel_error = 'no'; % SETTING: Store pixel error? {'yes','no'}
proj_diff = 'no'; % SETTING: Store projection difference? {'yes','no'}
timing = 'no'; % SETTING: Store timings? {'yes','no'}
end
methods (Access=public)
%------------------------------------------------------------------
function stats = apply(this, DART)
% Applies statistics.
% >> stats = DART.statistics.apply(DART);
stats = DART.stats;
% timing
if strcmp(this.timing, 'yes')
stats.timing(DART.iterationcount) = toc(DART.start_tic);
end
% pixel error
if strcmp(this.pixel_error, 'yes') && isfield(DART.base,'phantom')
[stats.rnmp, stats.nmp] = compute_rnmp(DART.base.phantom, DART.S);
stats.rnmp_hist(DART.iterationcount) = stats.rnmp;
stats.nmp_hist(DART.iterationcount) = stats.nmp;
end
% projection difference
if strcmp(this.proj_diff, 'yes')
new_sino = DART.tomography.project(DART.S);
stats.proj_diff = sum((new_sino(:) - DART.base.sinogram(:)) .^2 ) ./ (sum(DART.base.sinogram(:)) );
stats.proj_diff_hist(DART.iterationcount) = stats.proj_diff;
end
end
%------------------------------------------------------------------
function s = tostring(~, stats)
% To string.
% >> stats = DART.statistics.apply(stats);
s = '';
if isfield(stats, 'nmp')
s = sprintf('%s [%d]', s, stats.nmp);
end
if isfield(stats, 'proj_diff')
s = sprintf('%s {%0.2d}', s, stats.proj_diff);
end
end
%------------------------------------------------------------------
end
end
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