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/* Copyright (c) 2008-2025 the MRtrix3 contributors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#include "command.h"
#include "progressbar.h"
#include "datatype.h"
#include "image.h"
#include "fixel/legacy/image.h"
#include "fixel/legacy/fixel_metric.h"
#include "image_helpers.h"
#include "algo/threaded_loop.h"
using MR::Fixel::Legacy::FixelMetric;
using namespace MR;
using namespace App;
void usage ()
{
AUTHOR = "David Raffelt (david.raffelt@florey.edu.au) and Robert E. Smith (robert.smith@florey.edu.au)";
SYNOPSIS = "Compare two fixel images for differences, within specified tolerance";
ARGUMENTS
+ Argument ("data1", "a fixel image.").type_image_in ()
+ Argument ("data2", "another fixel image.").type_image_in ()
+ Argument ("tolerance", "the amount of signal difference to consider acceptable").type_float (0.0);
}
void run ()
{
Fixel::Legacy::Image<FixelMetric> buffer1 (argument[0]);
Fixel::Legacy::Image<FixelMetric> buffer2 (argument[1]);
check_dimensions (buffer1, buffer2);
for (size_t i = 0; i < buffer1.ndim(); ++i) {
if (std::isfinite (buffer1.spacing(i)))
if (buffer1.spacing(i) != buffer2.spacing(i))
throw Exception ("images \"" + buffer1.name() + "\" and \"" + buffer2.name() + "\" do not have matching voxel spacings " +
str(buffer1.spacing(i)) + " vs " + str(buffer2.spacing(i)));
}
for (size_t i = 0; i < 3; ++i) {
for (size_t j = 0; j < 4; ++j) {
if (abs (buffer1.transform()(i,j) - buffer2.transform()(i,j)) > 0.001)
throw Exception ("images \"" + buffer1.name() + "\" and \"" + buffer2.name() + "\" do not have matching header transforms "
+ "\n" + str(buffer1.transform().matrix()) + "vs \n " + str(buffer2.transform().matrix()) + ")");
}
}
double tol = argument[2];
ThreadedLoop (buffer1)
.run ([&tol] (decltype(buffer1)& a, decltype(buffer2)& b) {
if (a.value().size() != b.value().size())
throw Exception ("the fixel images do not have corresponding fixels in all voxels");
// For each fixel
for (size_t fixel = 0; fixel != a.value().size(); ++fixel) {
// Check value
if (abs (a.value()[fixel].value - b.value()[fixel].value) > tol)
throw Exception ("images \"" + a.name() + "\" and \"" + b.name() + "\" do not match fixel value within specified precision of " + str(tol)
+ " (" + str(a.value()[fixel].value) + " vs " + str(b.value()[fixel].value) + ")");
// Check size
if (abs (a.value()[fixel].size - b.value()[fixel].size) > tol)
throw Exception ("images \"" + a.name() + "\" and \"" + b.name() + "\" do not match fixel size within specified precision of " + str(tol)
+ " (" + str(a.value()[fixel].size) + " vs " + str(b.value()[fixel].size) + ")");
// Check Direction
for (size_t dim = 0; dim < 3; ++dim) {
if (abs (a.value()[fixel].dir[dim] - b.value()[fixel].dir[dim]) > tol)
throw Exception ("images \"" + a.name() + "\" and \"" + b.name() + "\" do not match fixel direction within specified precision of " + str(tol)
+ " (" + str(a.value()[fixel].dir[dim]) + " vs " + str(b.value()[fixel].dir[dim]) + ")");
}
}
}, buffer1, buffer2);
CONSOLE ("data checked OK");
}
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