Questions - OpenCV Q&A Forum

204

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no

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no

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2014-06-25 10:01:46 -0600 biharck

Problem with extract 2 sub matrix from the same image

java
submat

1k

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no

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no

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2016-01-09 14:25:09 -0600 opencv-arm

"C compiler identification is unknown" error on Debian (ARM)

169

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no

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2014-04-17 00:32:30 -0600 raqghu

Fast way to retrieve values in c++

large
data

212

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no

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no

votes

2015-12-09 15:39:21 -0600 carl82

opencv python build error

python

140

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2014-04-13 16:09:46 -0600 techlearner

How to calculate False Accept and Reject Rates in pattern recognition?

deleted

200

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no

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2014-08-23 00:54:59 -0600 Vivek Goel

Why we use mainly HSV color space nor BGR color space for color detection?

411

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no

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2015-09-19 12:12:59 -0600 SoajanII

cv::ml::StatModel::predict not working / neural networks

c++
opencv

179

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2015-08-05 04:27:49 -0600 kingdavidek

Any way to read video frames other than VideoCapture?

328

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2019-03-27 02:51:22 -0600 coolcoder001

Can you please suggest how to replace this code with OpenCV's darknet implementation ?

5k

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2016-03-29 11:26:43 -0600 ayeshas

focal length in pixel from fx and fy

focal
length

2k

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no

votes

2013-07-06 06:33:30 -0600 Gibtnix

Problems with OpenCV 2.4.5 and MonoDevelop

88

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no

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2020-01-06 04:16:53 -0600 Glychee

How to stabilize live feed?

videostabilization

512

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no

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no

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2017-07-13 16:23:13 -0600 don-prog

Head pose estimation fails with specific image sizes

2k

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2018-12-11 02:58:58 -0600 WoFFeN88

VideoWriter issues

304

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2017-07-24 18:05:41 -0600 mhaghighat

What is a valid/invalid ROI for OpenCV tracker?

213

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2016-02-22 08:01:04 -0600 jakir

Handling unknown scale in structure from motion initialization

SfM

282

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no

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2014-08-20 15:35:22 -0600 giza

Error building openCV - dumpOpenCLDevice() method error

345

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no

answers

-1

votes

2014-10-01 13:18:56 -0600 Christoph Pacher

OpenCV 3.0 tracking API multiple objects

tracking
api

187

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no

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2017-12-01 03:10:28 -0600 liujiabin076

SolvePnP can't get correct result

5k

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2017-03-08 04:02:50 -0600 yxchng

Why do I have the following error when using videoWriter.write()?

cvVideoWriter

188

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no

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2015-05-14 02:14:55 -0600 bjorn89

Find homography with SURF_OCL

798

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2019-02-25 04:46:49 -0600 krpa

How to store points cordinats

centerline

394

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answers

no

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2020-03-14 04:52:21 -0600 JeyP4

How to bound zebra crossing stripes?

106

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no

answers

no

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2015-08-09 08:14:03 -0600 Detect two Objects in contact

Detect two objects in contact

424

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no

answers

no

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2018-08-22 03:15:15 -0600 Glevrch

Opencv 3.4.1 android SDK has no NMSBoxes() and Dnn::forward() but it declared in header.

android#dnn

265

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no

answers

1

vote

2014-03-17 09:58:28 -0600 GilLevi

Trouble In running a new algorithm I've added to OpenCV

269

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no

answers

1

vote

2015-02-18 08:04:15 -0600 nekiman

Passing parameters in features2d and SURF?

207

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no

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no

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2015-01-10 11:49:59 -0600 sup

What happens if public Mat onCameraFrame(CvCameraViewFrame inputFrame) is called when the activity is still busy processing another frame ?

AndroidOpenCV

157

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no

answers

no

votes

2014-02-28 10:27:14 -0600 OCROpen

ocr using svm

funny

875

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no

answers

no

votes

2013-06-14 13:19:35 -0600 bala_

Any haarcascade xml for detecting nude pictures

nude

12,357 questions

Problem with extract 2 sub matrix from the same image

"C compiler identification is unknown" error on Debian (ARM)

Fast way to retrieve values in c++

opencv python build error

How to calculate False Accept and Reject Rates in pattern recognition?

Why we use mainly HSV color space nor BGR color space for color detection?

cv::ml::StatModel::predict not working / neural networks

Any way to read video frames other than VideoCapture?

Can you please suggest how to replace this code with OpenCV's darknet implementation ?

focal length in pixel from fx and fy

Problems with OpenCV 2.4.5 and MonoDevelop

How to stabilize live feed?

Head pose estimation fails with specific image sizes

VideoWriter issues

What is a valid/invalid ROI for OpenCV tracker?

Handling unknown scale in structure from motion initialization

Error building openCV - dumpOpenCLDevice() method error

OpenCV 3.0 tracking API multiple objects

SolvePnP can't get correct result

Why do I have the following error when using videoWriter.write()?

Find homography with SURF_OCL

How to store points cordinats

How to bound zebra crossing stripes?

Detect two objects in contact

Opencv 3.4.1 android SDK has no NMSBoxes() and Dnn::forward() but it declared in header.

Trouble In running a new algorithm I've added to OpenCV

Passing parameters in features2d and SURF?

What happens if public Mat onCameraFrame(CvCameraViewFrame inputFrame) is called when the activity is still busy processing another frame ?

ocr using svm

Any haarcascade xml for detecting nude pictures

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