Questions - OpenCV Q&A Forum

7k

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5

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4

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2018-07-26 02:01:52 -0600 jsxyhelu

I need a maxEnclosingCircle function

circle

16k

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3

answers

4

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2012-10-15 10:48:27 -0600 jlsb

findCirclesGrid

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2

answers

2

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2014-03-30 08:54:28 -0600 robcio_5

How to draw a circle on an image using mouse click/events?

4k

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3

answers

2

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2017-10-10 12:36:46 -0600 mfisher

Open CV's HoughCircles() is ~1000 times faster than my version

7k

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2

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2

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2016-12-19 05:20:35 -0600 Soltius

Is it possible to draw half circle?

5k

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1

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1

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2012-12-13 10:36:47 -0600 Ilya Lysenkov

Is there something wrong with circle grid with patternSize of 4 * 3 ?

11k

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2

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1

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2012-12-17 01:34:08 -0600 Haris

Detect/Fitting Circles

1k

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1

answer

1

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2013-04-08 16:28:31 -0600 Guanta

Drawing Circles around objects

870

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1

answer

1

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2013-04-18 01:58:54 -0600 StevenPuttemans

function for detecting proximity of points

circle
Line

4k

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1

answer

1

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2014-03-26 11:41:39 -0600 wuling

The maximum circle or rectangle inside the blob!

4k

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1

answer

1

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2015-04-16 16:57:16 -0600 theodore

Program that check for the roundness of ellipse?

1k

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1

answer

1

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2015-07-28 03:22:35 -0600 StevenPuttemans

How to do a mask or how to transform found contours to filled circles?

802

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1

answer

1

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2015-08-05 09:40:28 -0600 chr0x

unable to determine angle because of points from line

664

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no

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1

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2015-12-24 07:39:12 -0600 Momo

the largest circle in palm contour

440

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no

answers

1

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2016-01-25 11:04:40 -0600 spyderespirt0

Why do I keep getting rotated rect's when they are circles? [closed]

217

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no

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1

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2016-02-26 09:47:01 -0600 a.francesconi

Get a score for each detected circle using HoughCircles

10k

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3

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1

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2016-04-30 11:34:31 -0600 sturkmen

(Best) way to track a circle with a cross inside

2k

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1

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1

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2017-01-17 19:32:47 -0600 j0h

why is this circle only black?

900

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no

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1

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2017-04-24 08:34:42 -0600 StevenPuttemans

Algorithm advice: defect detection

2k

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1

answer

1

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2017-08-13 04:02:39 -0600 berak

Fast Radial Symmetry Transform Implementation

2k

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1

answer

1

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2018-05-02 08:54:19 -0600 joshuafc

Will putText,circle,line,rectangle for cv::cuda::GpuMat be implement?

2k

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1

answer

1

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2018-06-01 07:37:39 -0600 berak

Hough Circles way too Sensitive

1k

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no

answers

1

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2019-08-28 06:58:00 -0600 wackoo

Finding a circle with a defective contour

646

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1

answer

no

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2013-02-11 09:18:38 -0600 Muffo

Unexpected behavior of minEnclosingCircle

1k

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3

answers

no

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2013-03-29 22:28:17 -0600 wuling

Circle- Detection with Visual Basic

circle

1k

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1

answer

no

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2013-09-11 04:17:54 -0600 Moster

Displaying radius of a circle

5k

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2

answers

no

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2013-10-21 13:22:53 -0600 leRoss

filled circle detection

314

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1

answer

no

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2013-12-13 23:17:36 -0600 Daniil Osokin

i have problems with handling mouse event in opencv

1k

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no

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no

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2015-04-20 04:59:09 -0600 StevenPuttemans

Is there other methods to detect circle apart of houghcircles

628

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no

answers

no

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2015-04-28 09:43:20 -0600 Karthikeyan

54 questions

I need a maxEnclosingCircle function

findCirclesGrid

How to draw a circle on an image using mouse click/events?

Open CV's HoughCircles() is ~1000 times faster than my version

Is it possible to draw half circle?

Is there something wrong with circle grid with patternSize of 4 * 3 ?

Detect/Fitting Circles

Drawing Circles around objects

function for detecting proximity of points

The maximum circle or rectangle inside the blob!

Program that check for the roundness of ellipse?

How to do a mask or how to transform found contours to filled circles?

unable to determine angle because of points from line

the largest circle in palm contour

Why do I keep getting rotated rect's when they are circles? [closed]

Get a score for each detected circle using HoughCircles

(Best) way to track a circle with a cross inside

why is this circle only black?

Algorithm advice: defect detection

Fast Radial Symmetry Transform Implementation

Will putText,circle,line,rectangle for cv::cuda::GpuMat be implement?

Hough Circles way too Sensitive

Finding a circle with a defective contour

Unexpected behavior of minEnclosingCircle

Circle- Detection with Visual Basic

Displaying radius of a circle

filled circle detection

i have problems with handling mouse event in opencv

Is there other methods to detect circle apart of houghcircles

Measuring Circle Centre point and Radius!! Finding a fixed threshold parameter

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