Questions - OpenCV Q&A Forum

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3

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2015-03-23 19:42:21 -0600 superlou

Haar classifiers for multiple poses

cvhaartraining

257

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2015-03-13 02:34:33 -0600 dmilne

Generating good training data for haar cascades

cvhaartraining

482

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2013-11-04 01:02:19 -0600 mswcpt

Image preparation for haartraining - correct method

160

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2015-11-02 16:06:51 -0600 Papercut

Broken understainding - creating a classifier

897

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2015-01-17 06:16:17 -0600 StevenPuttemans

Gender recognition

470

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2015-01-27 02:33:31 -0600 jackmagic1

Cascade trained from trainingcascade unaccurate

233

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2015-03-08 13:23:05 -0600 Aspiring_roboticist

Detecting silver coins on a carpet with camera mounted to iRobot Create

379

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2015-03-12 07:52:16 -0600 Schawn

Training Dectectors - Image Sample Preparations

451

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2015-09-07 10:42:11 -0600 Steven_ocv

Train Cascade parameters calculations issue

250

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2015-10-02 09:52:21 -0600 Aravind

Getting NCV assertion failed error NCV stat=28

85

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2015-10-20 07:19:11 -0600 kelpie

opencv_traincascade unhandeled exception

cvhaartraining

98

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2015-11-07 07:18:10 -0600 wrongship

Haar training for multiple pose

127

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2016-03-03 09:04:53 -0600 DD

opencv_traincascade.exe crashes without an errormessage

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2016-05-21 14:42:50 -0600 slnowak

Training cascade classifier: Can not get new positive sample

284

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2016-06-30 10:13:20 -0600 bertumen.wj

I plan to recognize paper bills by denomination but i can't think of a way to do so ... it must be invariant of illumination, rotation and scale. can i use haar or LBP ? do you have any suggestions?

343

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2016-10-07 13:00:11 -0600 Neldar

Haar Training detectMultiScale does not work very well when size vary

194

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2016-11-04 09:00:44 -0600 m850140

My Haarcascade classifier uses a vector file of -w=20, -h=20 for training. There are some false negative results when testing. Does increasing -w and -h improve performance of my Haarcascade classifier?

155

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2016-11-18 08:48:11 -0600 IlyaLupa

Is it possible to port CascadeClassifier from v 2.4.11 to 3.1.0

287

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2016-11-09 04:22:33 -0600 StevenPuttemans

How to do HAAR training?

609

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2016-12-03 04:25:47 -0600 biagio montesano

A Haar classifier for trees in satellite image: how to generate positive samples?

cvhaartraining

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2017-03-24 14:45:20 -0600 sayem48

Haar Cascade training for leaves detection

168

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2017-06-28 10:07:31 -0600 eshirima

Cascade training parameters and time

705

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2017-10-06 13:52:14 -0600 holdman

Cascade Classifier - detectmultiscale does not return MatOfRect objects

133

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2017-12-21 20:43:46 -0600 bateringzax

Poor Cascade Training Results

160

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2018-02-27 12:05:24 -0600 Himanshu Walia

How to increase the quality of sampled images ? and does it affect the classifiers accuracy ?

100

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2018-08-01 11:51:25 -0600 graham

Cascade Training - nneg setting with prepared negative images

231

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2018-09-17 03:47:48 -0600 RUCasul

Haar Cascade training not working as intended

195

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2018-09-26 13:09:17 -0600 Ryan Lewkowicz

Simple logo haar file I created causes tons of false positives.

306

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2018-08-04 19:39:49 -0600 m7ammad7assan

I want to detect trees in image

367

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2020-03-10 12:59:21 -0600 dunnoguy

30 questions

Haar classifiers for multiple poses

Generating good training data for haar cascades

Image preparation for haartraining - correct method

Broken understainding - creating a classifier

Gender recognition

Cascade trained from trainingcascade unaccurate

Detecting silver coins on a carpet with camera mounted to iRobot Create

Training Dectectors - Image Sample Preparations

Train Cascade parameters calculations issue

Getting NCV assertion failed error NCV stat=28

opencv_traincascade unhandeled exception

Haar training for multiple pose

opencv_traincascade.exe crashes without an errormessage

Training cascade classifier: Can not get new positive sample

I plan to recognize paper bills by denomination but i can't think of a way to do so ... it must be invariant of illumination, rotation and scale. can i use haar or LBP ? do you have any suggestions?

Haar Training detectMultiScale does not work very well when size vary

My Haarcascade classifier uses a vector file of -w=20, -h=20 for training. There are some false negative results when testing. Does increasing -w and -h improve performance of my Haarcascade classifier?

Is it possible to port CascadeClassifier from v 2.4.11 to 3.1.0

How to do HAAR training?

A Haar classifier for trees in satellite image: how to generate positive samples?

Haar Cascade training for leaves detection

Cascade training parameters and time

Cascade Classifier - detectmultiscale does not return MatOfRect objects

Poor Cascade Training Results

How to increase the quality of sampled images ? and does it affect the classifiers accuracy ?

Cascade Training - nneg setting with prepared negative images

Haar Cascade training not working as intended

Simple logo haar file I created causes tons of false positives.

I want to detect trees in image

How to live stream to a website using cv2 library

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