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Change condition on parallel ellipse case so can only calculate t if necessary

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Deanna Hood 2015-04-18 12:27:41 -04:00
parent 5a552b6d8d
commit 37f77e7397
1 changed files with 2 additions and 3 deletions
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5
modules/imgproc/src/shapedescr.cpp
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@ -446,9 +446,8 @@ cv::RotatedRect cv::fitEllipse( InputArray _points )
// store angle and radii
rp[4] = -0.5 * atan2(gfp[2], gfp[1] - gfp[0]); // convert from APP angle usage
t = sin(-2.0 * rp[4]);
if( fabs(t) > min_eps )
t = gfp[2]/t;
if( fabs(gfp[2]) > min_eps )
t = gfp[2]/sin(-2.0 * rp[4]);
else // ellipse is rotated by an integer multiple of pi/2
t = gfp[1] - gfp[0];
rp[2] = fabs(gfp[0] + gfp[1] - t);