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39 Commits

Author SHA1 Message Date
Vadim Pisarevsky
8abb312c20
Merge pull request #17417 from vpisarev:fix_fitellipse 
* improved fitEllipse and fitEllipseDirect accuracy in singular or close-to-singular cases (see issue #9923)

* scale points using double precision

* added normalization to fitEllipseAMS as well; fixed Java test case by raising the tolerance (it's unclear what is the correct result in this case).

* improved point perturbation a bit. make the code a little bit more clear

* trying to fix Java fitEllipseTest by slightly raising the tolerance threshold

* synchronized C++ version of Java's fitEllipse test

* removed trailing whitespaces
 2020-06-01 18:01:20 +00:00
Brian Wignall
f9c514b391 Fix spelling typos 
backport commit 659ffaddb4
 2019-12-27 12:46:53 +00:00
mcellis33
5d15c65e48 Merge pull request #16136 from mcellis33:mec-nan 
* Handle det == 0 in findCircle3pts.

Issue 16051 shows a case where findCircle3pts returns NaN for the
center coordinates and radius due to dividing by a determinant of 0. In
this case, the points are colinear, so the longest distance between any
2 points is the diameter of the minimum enclosing circle.

* imgproc(test): update test checks for minEnclosingCircle()

* imgproc: fix handling of special cases in minEnclosingCircle()
 2019-12-18 17:25:59 +03:00
Vitaly Tuzov
a84bbc62b1 boundingRect() reworked to use wide universal intrinsics 2019-01-18 18:31:54 +03:00
Hamdi Sahloul
5d54def264 Add semicolons after CV_INSTRUMENT macros 2018-09-14 06:45:31 +09:00
Alexander Alekhin
8a3c394d6a don't use constructors for C API structures 2018-09-06 14:34:16 +03:00
Alexander Alekhin
b09a4a98d4 opencv: Use cv::AutoBuffer<>::data() 2018-07-04 19:11:29 +03:00
Vadim Pisarevsky
ff190b1ef4 Merge pull request #9802 from Nickolays:Fix#9797 2017-10-27 13:00:34 +00:00
Nickola
b2b56b6896 Fix Issue #9797 minEnclosingCircle from three points 
and add test for only 3 pts
 2017-10-13 19:26:54 +03:00
Alexander Alekhin
e615fafe2d build: fix MSVS2010 2017-10-08 23:32:22 +03:00
Jasper Shemilt
800da724a3 Fix Transposed eigenvals and vecs. Didn't notice at first 2017-10-02 17:56:08 +01:00
Jasper Shemilt
0136711cf4 Adds fitEllipseAMS to imgproc: The Approximate Mean Square (AMS) proposed by Taubin 1991. 
Adds fitEllipseDirect to imgproc: The Direct least square (Direct) method by Fitzgibbon1999.

New Tests are included for the methods.
fitEllipseAMS Tests
fitEllipseDirect Tests

Comparative examples are added to fitEllipse.cpp in Samples.
 2017-10-02 16:38:41 +01:00
Maksim Shabunin
32d4af36e2 Fixing some static analysis issues 2017-06-27 14:30:26 +03:00
Pavel Vlasov
30a6cee2fe Instrumentation for OpenCV API regions and IPP functions; 2016-08-19 18:10:03 +03:00
songyuncen
9d8118dee5 build failed, trailing whitespace. 2015-12-09 08:00:42 +08:00
songyuncen
e0b7389dc3 remove compile warnings in shapedescr.cpp 2015-12-08 22:23:23 +08:00
songyuncen
a69eeb6b1f change the algorithm of minimum enclosing circle with EMO Welzl's method 2015-12-08 21:38:59 +08:00
songyuncen
b81598bc03 try to fix : enclosing circle always larger than 1.0 
issue #5745
 2015-12-05 10:57:29 +08:00
Bovaz
7be3d3ab2c sqrtf to std::sqrt 2015-10-14 18:57:33 -07:00
Matteo Piovanelli
216baf5b11 Speedup of arcLength 
By my tests, this version of cv::arcLength is almost 10% faster than the
one using a buffer it replaces.
 2015-10-14 13:37:48 -07:00
Deanna Hood
37f77e7397 Change condition on parallel ellipse case so can only calculate t if necessary 2015-04-18 13:51:32 -04:00
Deanna Hood
103336c76e Fix Bug #3989: correctly identify ellipse with its axes parallel to x-y axes during semi-major axis calculation 2015-04-16 11:59:05 -04:00
Julien Nabet
2d5e3b57ea Fix cppcheck reports warnings: 
(performance) Possible inefficient checking for 'lmap' emptiness
(warning) Assignment of function parameter has no effect outside the function. Did you forget dereferencing it?
(style) Array index '<xxx>' is used before limits check
 2014-12-27 10:54:34 +01:00
Adil Ibragimov
8a4a1bb018 Several type of formal refactoring: 
1. someMatrix.data -> someMatrix.prt()
2. someMatrix.data + someMatrix.step * lineIndex -> someMatrix.ptr( lineIndex )
3. (SomeType*) someMatrix.data -> someMatrix.ptr<SomeType>()
4. someMatrix.data -> !someMatrix.empty() ( or !someMatrix.data -> someMatrix.empty() ) in logical expressions
 2014-08-13 15:21:35 +04:00
Roman Donchenko
3939d78336 Merge remote-tracking branch 'origin/2.4' into merge-2.4 
Conflicts:
	modules/core/include/opencv2/core/types_c.h
	modules/gpu/src/cuda/imgproc.cu
	modules/gpu/src/cuda/safe_call.hpp
	modules/gpu/src/error.cpp
	modules/gpu/src/imgproc.cpp
	modules/imgproc/src/distransform.cpp
	modules/imgproc/src/shapedescr.cpp
	modules/python/src2/cv2.cpp
	modules/python/src2/cv2.cv.hpp
 2013-07-22 18:38:57 +04:00
StevenPuttemans
27ed32f833 Applied bugfix #3165 : Changed min_eps value 2013-07-19 14:11:04 +02:00
Andrey Kamaev
62adc01980 Move cv::Rect_ 2013-04-01 15:24:33 +04:00
Andrey Kamaev
2a6fb2867e Remove all using directives for STL namespace and members 
Made all STL usages explicit to be able automatically find all usages of
particular class or function.
 2013-02-25 15:04:17 +04:00
Vadim Pisarevsky
efd00238e2 fixed warnings; restored fixed_size parameter in AutoBuffer 2013-01-23 21:47:58 +04:00
Vadim Pisarevsky
dc4d0398f3 converted few more comp. geometry functions to C++ 2013-01-22 16:54:31 +04:00
OpenCV Buildbot
81f826db2b Normalize line endings and whitespace 2012-10-17 15:57:49 +04:00
OpenCV Buildbot
04384a71e4 Normalize line endings and whitespace 2012-10-17 15:32:23 +04:00
Vadim Pisarevsky
fac3d9994c integrated another portion of SSE optimizations from Grigory Frolov 2012-07-31 19:07:55 +04:00
Andrey Kamaev
f2d3b9b4a1 Warning fixes continued 2012-06-09 15:00:04 +00:00
Vadim Pisarevsky
4eda1662aa switched back to FitEllipse algorithm by Dr. Daniel Weiss; improved its accuracy in some cases. It fixes #1638 2012-03-29 10:47:08 +00:00
Vadim Pisarevsky
903c05db1a added another contour perimeter test and fixed bug #216 2012-03-26 17:00:48 +00:00
Vadim Pisarevsky
7a59d6c77e improved convergence of minEnclosingCircle algorithm, patch #947 (thanks to Hannes Sommer) 2012-03-26 13:45:49 +00:00
Vadim Pisarevsky
ce2edd137d fixed typo in fitellipse err message (ticket #365) 2011-05-02 22:37:21 +00:00
Vadim Pisarevsky
127d6649a1 "atomic bomb" commit. Reorganized OpenCV directory structure 2010-05-11 17:44:00 +00:00