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Merge pull request #17417 from vpisarev:fix_fitellipse

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* 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
This commit is contained in:
Vadim Pisarevsky
2020-06-01 21:01:20 +03:00
committed by GitHub
parent adcb943f61
commit 8abb312c20
3 changed files with 216 additions and 86 deletions
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modules/imgproc/misc/java/test/ImgprocTest.java
+7 -3
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@@ -797,9 +797,13 @@ public class ImgprocTest extends OpenCVTestCase {
rrect = Imgproc.fitEllipse(points);
assertPointEquals(new Point(0, 0), rrect.center, EPS);
assertEquals(2.828, rrect.size.width, EPS);
assertEquals(2.828, rrect.size.height, EPS);
double FIT_ELLIPSE_CENTER_EPS = 0.01;
double FIT_ELLIPSE_SIZE_EPS = 0.4;
assertEquals(0.0, rrect.center.x, FIT_ELLIPSE_CENTER_EPS);
assertEquals(0.0, rrect.center.y, FIT_ELLIPSE_CENTER_EPS);
assertEquals(2.828, rrect.size.width, FIT_ELLIPSE_SIZE_EPS);
assertEquals(2.828, rrect.size.height, FIT_ELLIPSE_SIZE_EPS);
}
public void testFitLine() {