Questions - OpenCV Q&A Forum

7k

views

5

answers

4

votes

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

I need a maxEnclosingCircle function

circle

16k

views

3

answers

4

votes

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

findCirclesGrid

1k

views

3

answers

no

votes

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

Circle- Detection with Visual Basic

circle

4k

views

3

answers

2

votes

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

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

10k

views

3

answers

1

vote

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

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

11k

views

2

answers

1

vote

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

Detect/Fitting Circles

5k

views

2

answers

no

votes

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

filled circle detection

13k

views

2

answers

2

votes

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

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

7k

views

2

answers

2

votes

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

Is it possible to draw half circle?

5k

views

2

answers

no

votes

2016-02-04 06:53:01 -0600 Poovamraj

Whenever i use Imgproc.rectangle and Imgproc.circle function following error appears

5k

views

1

answer

1

vote

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

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

642

views

1

answer

no

votes

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

Unexpected behavior of minEnclosingCircle

1k

views

1

answer

1

vote

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

Drawing Circles around objects

868

views

1

answer

1

vote

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

function for detecting proximity of points

circle
Line

1k

views

1

answer

no

votes

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

Displaying radius of a circle

314

views

1

answer

no

votes

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

i have problems with handling mouse event in opencv

4k

views

1

answer

1

vote

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

The maximum circle or rectangle inside the blob!

867

views

1

answer

-1

votes

2014-09-22 07:14:48 -0600 Balaji R

Finding a point on a circle?

circle

1k

views

1

answer

no

votes

2015-04-16 03:36:31 -0600 HasiKP

Contours radius unit

4k

views

1

answer

1

vote

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

Program that check for the roundness of ellipse?

1k

views

1

answer

1

vote

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

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

800

views

1

answer

1

vote

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

unable to determine angle because of points from line

707

views

1

answer

no

votes

2016-03-22 12:19:26 -0600 kbarni

fastest way to detect a red ball?

2k

views

1

answer

1

vote

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

why is this circle only black?

291

views

1

answer

no

votes

2017-01-17 20:30:09 -0600 Balaji R

ColorConversionCodes COLOR_GRAY2RGB seems to behave like BGR

2k

views

1

answer

no

votes

2017-01-21 21:20:42 -0600 Tetragramm

Finding Largest Circle Contained Within A Contour

942

views

1

answer

-2

votes

2017-06-30 01:42:01 -0600 berak

Is it possible to turn this c++ code into python code?

2k

views

1

answer

1

vote

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

Fast Radial Symmetry Transform Implementation

587

views

1

answer

no

votes

2017-10-23 09:25:40 -0600 essamzaky

How to detect circles with +/-5% error margin?

821

views

1

answer

no

votes

2017-11-20 04:23:29 -0600 VxW

54 questions

I need a maxEnclosingCircle function

findCirclesGrid

Circle- Detection with Visual Basic

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

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

Detect/Fitting Circles

filled circle detection

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

Is it possible to draw half circle?

Whenever i use Imgproc.rectangle and Imgproc.circle function following error appears

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

Unexpected behavior of minEnclosingCircle

Drawing Circles around objects

function for detecting proximity of points

Displaying radius of a circle

i have problems with handling mouse event in opencv

The maximum circle or rectangle inside the blob!

Finding a point on a circle?

Contours radius unit

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

fastest way to detect a red ball?

why is this circle only black?

ColorConversionCodes COLOR_GRAY2RGB seems to behave like BGR

Finding Largest Circle Contained Within A Contour

Is it possible to turn this c++ code into python code?

Fast Radial Symmetry Transform Implementation

How to detect circles with +/-5% error margin?

Remove defects from round object

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