Geoffrey French
da93619e59
Fixed some issues with the new windowed_histogram function in filter.rank.
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It used to be able to output uint8 histogram, whose max pixel counts of 255 could easily overflow. Addressed by limiting the output type to float.
Normalized histograms are now generated, otherwise behaviour is unpredictable at boundaries or when pixels are not permitted by a mask.
The new optional n_bins parameter allows the caller to specify the size of the histogram generated. Having it fixed to image.max()+1 could result in feature vectors being shorter than desired just due to a value not being used in an image.
An example has been added to the docs, that demonstrates the application of windows histograms in object matching; a single coin is extracted and found by chi squared histogram matching.
2014-08-31 22:25:45 +01:00
Geoffrey French
7ebb2388d2
Fixed some test failures and added a test for windowed_histogram.
2014-08-31 16:22:35 +01:00
Geoffrey French
d63d89497b
Modified rank filters package so that the _core function in core.pyx outputs to a 3D image, permitting the generation of images with arbitrary size feature vector pixels. Implemented windowed_histogram that generates a windowed histogram of an image.
2014-08-31 16:04:38 +01:00
Johannes Schönberger
f9fd683fcb
Test missed line for coverage
2014-08-08 19:51:10 -04:00
Johannes Schönberger
83a6b64844
Fix return value description
2014-08-08 17:01:52 -04:00
Johannes Schönberger
23fd7b89af
Improve test coverage
2014-08-08 17:01:52 -04:00
Johannes Schönberger
ce0e9174c9
Fix test cases which are now wrong due to previous binning error
2014-08-08 17:01:52 -04:00
Johannes Schönberger
fc085ec779
Account for case when image only contains one unique value
2014-08-08 17:01:52 -04:00
Johannes Schönberger
8aa5ef8697
Return to old function name threshold_isodata
2014-08-08 17:01:52 -04:00
Johannes Schönberger
31cf1acf24
Fix isodata-thresholding according to Zachary Pincus
2014-08-08 17:01:52 -04:00
Juan Nunez-Iglesias
838617cb39
Fix incorrect test function signature
2014-07-28 13:01:41 +10:00
Juan Nunez-Iglesias
278a0d6862
Bug fix: nbins can be >256 in threshold_isodata
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The threshold_isodata function created an arange of values up to the
number of bins, but gave it type np.uint8, limiting the number of bins
to 256.
Fixes #1085 .
2014-07-28 12:38:34 +10:00
blink1073
5677dafe41
Move away from random.random in favor of random.rand
2014-07-19 18:18:23 -05:00
blink1073
5ef3f95d71
Add random seeds to tests per #1044
2014-07-05 12:49:42 -05:00
Stefan van der Walt
5b07567973
Merge pull request #1005 from JDWarner/int_idx_patch
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Fix NumPy non-integer indexing deprecation warnings
2014-05-13 17:48:11 +02:00
Johannes Schönberger
ac1b10d1cc
Fix docstring of skimage.filter.rank.threshold_percentile
2014-05-10 10:38:48 -04:00
Josh Warner (Mac)
1ca0eef825
FIX: Non-integer indexing deprecation warnings
2014-05-08 00:39:54 -05:00
Johannes Schönberger
ed558d672e
Remove deprecated skimage.filter.median_filter
2014-04-11 10:05:51 -04:00
Juan Nunez-Iglesias
45beadcb23
Remove all deprecated rank filter functions
2014-04-09 23:26:42 +10:00
Johannes Schönberger
ef63523ab0
Move denoise functions to restoration submodule
2014-03-13 19:39:54 -04:00
Stefan van der Walt
f518c2b30f
Merge pull request #859 from radioxoma/threshold
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Add ISODATA thresholding
2014-01-14 05:47:33 -08:00
radioxoma
38525fb423
Explanation by ahojnnes
2014-01-13 19:46:10 +03:00
Johannes Schönberger
0f6cb6f1f9
Add note about dtype overflow
2014-01-12 19:48:52 -05:00
radioxoma
0079e8de5c
Adding comments
2014-01-12 18:18:50 +03:00
radioxoma
cd01bad721
fix tests
2014-01-11 02:00:03 +03:00
radioxoma
4d5889964b
Unit-tests and small fixes
2014-01-10 22:32:34 +03:00
radioxoma
2c197846f9
Add ISODATA threshold with tests
2014-01-10 22:32:34 +03:00
radioxoma
dfa2ba7bcd
fix yen blank image bug
2014-01-10 22:32:34 +03:00
radioxoma
7fec88fc82
fix threshold_yen import
2014-01-10 22:32:34 +03:00
Johannes Schönberger
be3752e922
Use 2 empty lines between functions
2013-12-19 06:05:26 +01:00
Johannes Schönberger
0bf905ad22
Readd note about overflow
2013-12-18 16:36:54 +01:00
Johannes Schönberger
90ca50d7db
Clarify that it is the local histogram
2013-12-18 16:34:47 +01:00
Johannes Schönberger
f1839e685a
Fix pop_bilateral doc test
2013-12-18 16:34:03 +01:00
Johannes Schönberger
f8099fa6ac
Improve doc strings of percentile rank filters
2013-12-18 14:48:59 +01:00
Johannes Schönberger
db048d3675
Improve doc strings of bilateral rank filters
2013-12-18 14:43:08 +01:00
Johannes Schönberger
0a46f5f8de
Improve doc strings of generic rank filters
2013-12-18 14:37:24 +01:00
odebeir
2e84dc6399
fix:indentation
2013-12-06 20:13:00 +01:00
Olivier Debeir
cb310feab1
fix:rtank.__init__
2013-12-06 13:42:06 +01:00
Olivier Debeir
9d734ad4f2
fix:docstring in sum_bilateral
2013-12-06 12:05:36 +01:00
Olivier Debeir
0b8d83c24c
fix:rank.sum docstrings
2013-12-06 10:50:27 +01:00
Olivier Debeir
3f08779810
add:rank.sum_bilateral
2013-12-06 10:47:52 +01:00
Olivier Debeir
d98ed722d9
add:rank.sum_percentile
2013-12-06 10:37:39 +01:00
Olivier Debeir
1f8adcc755
fix:indent
2013-12-06 10:09:10 +01:00
Olivier Debeir
ef5de4165b
fix:rank.sum docstring
2013-12-06 10:08:27 +01:00
Olivier Debeir
0fc0c9f042
fix:rank.sum docstring
2013-12-06 10:06:32 +01:00
Olivier Debeir
39b256a7ed
fix:rank.sum docstring
2013-12-06 10:05:19 +01:00
Olivier Debeir
fe0e252db6
shorten line
2013-12-06 09:08:34 +01:00
Olivier Debeir
ed0ae50f62
add rank filter sum
2013-12-06 09:05:55 +01:00
Johannes Schönberger
df4ca92794
Reduce runtime of long doctests
2013-11-18 12:54:42 +01:00
Johannes Schönberger
ad3464701a
Fix doc string syntax errors
2013-11-09 23:13:43 +01:00
Geoffrey French