Questions - OpenCV Q&A Forum

1k

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2020-04-11 01:58:25 -0600 hamsolo474

contourArea strange behaviour

336

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1

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2020-04-09 04:48:51 -0600 berak

python code in tutorial "file input and output using xml and yaml files"

225

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2020-05-07 04:11:45 -0600 ksenobojca

"_InputArray::isVector()" with Python data

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2020-05-20 00:48:27 -0600 YashRunwal

Extracting Curved Contours

python

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2020-05-29 01:09:30 -0600 berak

How do I see outputs of every layer of DNN OpenCV Python (visualization tool)?

409

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2020-06-12 06:51:33 -0600 Miorii

ORB model conversion from python to java

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2020-06-17 06:00:34 -0600 sturkmen

Merging nearby rectangles(edited)

python
ml

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2020-07-12 03:33:50 -0600 supra56

cv2 imshow displaying black images sometimes

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2020-07-27 04:56:28 -0600 berak

NMSBoxes output with top_k parameter

3k

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2020-08-14 03:55:15 -0600 supra56

pip install opencv-python failing on raspberry pi zero w

2k

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2020-08-17 05:16:22 -0600 berak

How can I modify ROI and then add it to the original image using Python?

211

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2020-09-28 03:09:56 -0600 berak

Why is a contour from cv2.findContours() in a shape like [N,1,2]?

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2020-10-11 12:03:07 -0600 jbhunt

Is there an ellipse detection algorithm that is robust to partially occluded objects?

1k

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2020-10-18 05:11:30 -0600 rgade

Different output from Python and C++ in CalibrateHandEye()

949

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2020-10-22 11:43:22 -0600 sturkmen

Clicking contours with mouse but only 1 contour can be found? [closed]

1k

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2020-12-02 21:10:57 -0600 sturkmen

Did convexityDefects function behaviour changed between cv2 versions 4.2.0 and 4.3.0?

3k

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2018-08-18 02:21:08 -0600 Vajrayudha Ristiawanto

How to train cascade classifier

9k

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2

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2016-03-25 18:13:05 -0600 hondaman900

Broken python bindings with createEigenFaceRecognizer

3k

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2

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2

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2012-07-13 06:25:41 -0600 jayrambhia

Can't use pyramids in calcOpticalFlowPyrLK - Python

10k

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3

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2

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2012-09-25 10:39:30 -0600 Kirill Kornyakov

Getting single frames from video with python

6k

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1

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2012-08-11 16:01:54 -0600 Philipp Wagner

Need to .pgm image of specific size for FaceRecognizer in python

3k

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2

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2

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2014-02-08 03:38:37 -0600 opencvslave

getting opencv to work with pydev

5k

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1

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2

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2012-09-30 07:13:23 -0600 Ilya Lysenkov

Problems installing opencv on mac with python

2k

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2

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2

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2013-06-11 08:56:08 -0600 mat_pier

How do I install the old cv not cv2?! Python

python
CV

12k

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1

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2

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2013-08-18 06:28:22 -0600 Alexander Mordvintsev

Epilines not correct

2k

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1

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2

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2013-12-15 11:02:49 -0600 Guanta

supported input types for matchShapes

676

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2

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2013-09-16 08:56:20 -0600 Spas Hristov

30fps capture in OSX, but only 15fps in ubuntu

1k

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2

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2013-11-14 17:52:09 -0600 Phando

How to compile OpenCV for iOS7 (arm64)

1k

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no

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2

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2014-07-11 20:24:20 -0600 Steven P. Goldsmith

People detection using motion ROI [closed]

381

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no

answers

2

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2013-11-01 15:28:57 -0600 Pikopiko

OpenCV Python Module with OCL

ocl
python

2,171 questions

contourArea strange behaviour

python code in tutorial "file input and output using xml and yaml files"

"_InputArray::isVector()" with Python data

Extracting Curved Contours

How do I see outputs of every layer of DNN OpenCV Python (visualization tool)?

ORB model conversion from python to java

Merging nearby rectangles(edited)

cv2 imshow displaying black images sometimes

NMSBoxes output with top_k parameter

pip install opencv-python failing on raspberry pi zero w

How can I modify ROI and then add it to the original image using Python?

Why is a contour from cv2.findContours() in a shape like [N,1,2]?

Is there an ellipse detection algorithm that is robust to partially occluded objects?

Different output from Python and C++ in CalibrateHandEye()

Clicking contours with mouse but only 1 contour can be found? [closed]

Did convexityDefects function behaviour changed between cv2 versions 4.2.0 and 4.3.0?

How to train cascade classifier

Broken python bindings with createEigenFaceRecognizer

Can't use pyramids in calcOpticalFlowPyrLK - Python

Getting single frames from video with python

Need to .pgm image of specific size for FaceRecognizer in python

getting opencv to work with pydev

Problems installing opencv on mac with python

How do I install the old cv not cv2?! Python

Epilines not correct

supported input types for matchShapes

30fps capture in OSX, but only 15fps in ubuntu

How to compile OpenCV for iOS7 (arm64)

People detection using motion ROI [closed]

OpenCV Python Module with OCL

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