d5b72f91ab
iradon: Do not suppress 0 frequency for filter=None.
2013-07-14 17:40:17 +02:00
4549204507
iradon: Clean up filter code.
2013-07-14 17:39:48 +02:00
60444ee4d3
Radon transform: PEP8 fixes.
2013-07-13 20:32:15 +02:00
462173a53a
Radon transform: Include boundary in reconstruction circle.
...
A test criterion needed to be relaxed slightly to have tests still
passing. This is ok, as the reconstruction circle is now larger, meaning
larger errors should be expected. Moreover, the test in question uses
random data, and changing the seed causes greater changes in accuracy
than the amount the test criterion was relaxed by.
2013-07-13 20:32:15 +02:00
288ee69483
radon: Correct docstring of order_angles_golden_ratio.
2013-07-13 20:32:15 +02:00
41c6f6d740
radon: Reduce duplication; simplifications.
2013-07-13 20:32:13 +02:00
47b6d0c5a6
Radon transform: Document rotation axis location.
2013-07-13 20:31:28 +02:00
2bfaafd9e2
Radon transform: Redefine projection center for sinograms.
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This definition is chosen because it is simple to express in the
documentation. No changes in accuracy are to be expected, but comparing
sinograms and reconstructions before and after this commit will give
different results in the cases where ``circle=False`` for ``radon`` or
``iradon``.
2013-07-13 19:31:43 +02:00
4d307f5315
iradon_sart: Fix docstring typo.
2013-07-09 11:44:28 +02:00
1cc42bd943
iradon_sart: Reformat references.
2013-07-09 11:44:03 +02:00
18a06a0add
iradon_sart: Format docs correctly.
2013-07-08 14:50:06 +02:00
bea50aa608
iradon: use util.pad for sinogram padding.
2013-07-06 20:55:54 +02:00
b3746b9090
iradon: Cleanup by locating related code in one place.
2013-07-06 20:55:54 +02:00
643a1bc1f5
iradon: Add test for cubic interpolation.
2013-07-06 20:55:53 +02:00
b90ba783ef
iradon: Only allow interpolation methods working well.
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Of the interpolation methods provided by scipy.interpolate.interp1d,
only cubic has been found to work well with the tests in skimage (other
methods are either identical to linear or nearest, or they produce bad
reconstructions).
2013-07-06 20:55:53 +02:00
2be327815e
radon: Use numpy.interp/scipy.interpolate.
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Scipy supports all interpolation kinds (nearest, linear) we need, while
numpy supports only linear interpolation. The numpy interpolation is
substantially faster, so this is used even though it complicates the
code slightly.
2013-07-06 20:55:53 +02:00
5955e4e612
iradon: Reduce code duplication.
2013-07-06 20:55:53 +02:00
ac460a9777
iradon: Use util.pad for array padding.
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This depends on util.pad accepting 0s in pad_width, which has a proposed
solution in gh-634.
2013-07-06 20:55:53 +02:00
237fb989b0
radon: Use util.pad for array padding.
2013-07-06 20:55:53 +02:00
6edd707a1b
Merge pull request #637 from sciunto/minorfix
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STYLE : PEP8 + import fix in hough_transform tests
2013-07-06 11:06:48 -07:00
cf3efba3c1
use previous import
2013-07-06 16:12:09 +02:00
2dfeab83df
PEP8 + import
2013-07-06 13:49:01 +02:00
3cdfeccc7a
iradon_sart: flip signs to reflect changes to radon.
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The changes to radon were introduced in gh-596.
2013-07-05 13:14:39 +02:00
af47941435
iradon_sart: fix comment spelling.
2013-07-05 13:14:39 +02:00
f2790d658c
iradon_sart: redefine projection center.
...
This reflects the bugfixes related to issue gh-592 implemented in
gh-596.
2013-07-05 13:14:39 +02:00
06857d3b92
Radon tests: Check the correct error metric.
2013-07-05 13:14:39 +02:00
a4870242b6
iradon_sart: Test clip functionality and add a test for it.
2013-07-05 13:14:39 +02:00
dde4288865
test_radon_transform: Style fixes.
2013-07-05 13:14:39 +02:00
266b202226
iradon_sart: Style fixes.
2013-07-05 13:14:38 +02:00
116e1dd571
iradon_sart: Also test accuracy with a missing wedge.
2013-07-05 13:14:38 +02:00
ace07a0b18
iradon_sart: Add test for order_angles_golden_ratio.
2013-07-05 13:14:38 +02:00
2082b57e41
iradon_sart: Order angles using a golden ratio approach.
2013-07-05 13:14:38 +02:00
dcd31c1882
radon_transform: Declare encoding.
2013-07-05 13:14:38 +02:00
8d4b1e6710
iradon_sart: Add Kaczmarz reference and reformat citations.
2013-07-05 13:14:38 +02:00
89f227c5ff
iradon_sart: Remove needless memoryview/ndarray conversion.
...
image_update is not manipulated in sart_projection_update and the
conversion to memoryview will happen when it is passed to the
subroutines anyway.
2013-07-05 13:14:38 +02:00
5baaf78564
iradon_sart: Reduce code duplication in interpolation.
2013-07-05 13:14:38 +02:00
91aeb658dd
iradon_sart's cython exts: Use typed memoryviews, not ndarrays.
2013-07-05 13:14:38 +02:00
c977c5974d
iradon_sart: Improve argument checking.
2013-07-05 13:14:38 +02:00
59bdb24c92
iradon_sart: Clean up cython code to minimize python calls.
2013-07-05 13:14:38 +02:00
1b620a0a12
Tests for iradon_sart: Robust path handling.
2013-07-05 13:14:38 +02:00
94eba1c911
iradon_sart: Clarify how constants are chosen.
2013-07-05 13:14:38 +02:00
496902145f
iradon_sart: Add wikipedia reference to Kaczmarz method.
2013-07-05 13:14:38 +02:00
372f0127f9
transform.iradon_sart: Clean up code for ordering projections.
2013-07-05 13:14:38 +02:00
b474804654
Fix docstrings for transform.iradon_sart with subroutines.
2013-07-05 13:14:38 +02:00
d5f323eec0
Tests for the projection_shifts functionality of iradon_sart.
2013-07-05 13:14:38 +02:00
1e1dd180d2
Implement projection shifts.
2013-07-05 13:14:38 +02:00
8e6468eef5
Add tests for transform.iradon_sart.
2013-07-05 13:14:38 +02:00
d4b33059cb
Make iradon_sart visible in the transform package.
2013-07-05 13:14:38 +02:00
9484afeed1
Add SART tomography reconstruction to radon_transform.
2013-07-05 13:14:38 +02:00
24c0c40977
Merge pull request #511 from ankit-maverick/resample
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Resampling of nD arrays
2013-07-04 22:47:09 -07:00
Jostein Bø Fløystad