Questions - OpenCV Q&A Forum

328

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1

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no

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2014-09-02 23:02:25 -0600 Haris

Help with createFisherFaceRecognizer();

543

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no

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no

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2016-11-10 09:01:16 -0600 ThorbjornSomod

Training a lbp detector/classifier

3k

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1

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2012-11-04 07:35:10 -0600 Philipp Wagner

Face Recognition in Video using OpenCV gives unhandled exception

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3

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no

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2013-06-07 11:43:49 -0600 mijl43

face recognition using opencv2.4.3

Face-Recognition

545

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2013-02-22 10:08:47 -0600 berak

facerec_demo model->predict exception thrown

474

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no

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2014-01-12 07:10:30 -0600 lukaszbobrek

FaceRecognizer is there any way to use prediction with string format (instead of int). [closed]

2k

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1

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2016-09-08 05:21:53 -0600 CLeBeR

Assertion error in cvtColor

393

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2018-03-04 06:40:14 -0600 Rupan

Facial recognition run error: Image step is wrong

919

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no

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2018-12-19 08:16:51 -0600 oja

Hey guys I am doing a face recognition project using LBPHFaceRecognizer the problen is that for few images (test images) the model is recognizing and for few images it is giving this error: (-215:Assertion failed) s >= 0 in function 'cv::setSize' [closed]

FaceRecognition

479

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2017-12-09 03:44:37 -0600 procton

Road detection and machine learning

2k

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1

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2016-12-17 01:50:22 -0600 berak

openCV 2.4.9.1 sample creation works but gives error message

216

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no

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2014-05-19 16:41:54 -0600 Fox_21

OpenCV Python face accuracy

291

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no

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2016-08-05 04:42:04 -0600 Param92

OpenCV 3.1.0 Cascade Classifier detectMultiScale provides inconsistent results on different machines

2k

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1

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no

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2017-04-21 11:34:45 -0600 StevenPuttemans

Best method to detect facial hair?

165

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no

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2019-09-05 13:41:55 -0600 vito95

how does opencv handle rectangles feature of haar cascade classifier?

700

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2016-08-29 06:25:32 -0600 StevenPuttemans

Face detection using OpenCV with Java

670

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2018-11-09 09:32:20 -0600 caiocanalli

Low accuracy of SVM on Android

869

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2015-04-13 05:22:53 -0600 pulp_fiction

Using an old format Haar Cascade Classifier File

2k

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2

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no

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2013-07-13 13:05:25 -0600 asd

correct parameters for createsamples and traincascade

2k

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1

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no

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2014-06-03 02:48:02 -0600 StevenPuttemans

LBP for vehicle detection

1k

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1

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no

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2013-07-31 17:22:19 -0600 Mathieu Barnachon

Fastest, and most accurate eye finding algorithm available in opencv?

1k

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2

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no

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2014-01-22 22:12:18 -0600 Parthi

what kind of approach can be used for recognize hand signs?

89

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no

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2017-06-13 17:07:22 -0600 JP MOCHET

haar detection bouding box

objectdetection

1k

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1

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no

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2013-10-17 10:43:00 -0600 Pedro Batista

C++ error in haartraining attempts

618

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1

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2017-03-07 01:11:10 -0600 berak

Load Single Channel Numpy Array Image with detectMultiScale

1k

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no

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2016-10-04 01:24:47 -0600 berak

how to dispaly percentage pridiction in fisher face recoginition algorithm

4k

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1

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no

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2017-06-16 00:13:01 -0600 berak

Training and Test images must be of equal size

413

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no

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2015-06-25 04:20:29 -0600 angela

Detections too small with OpenCV Cascade classifier

1k

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1

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2017-05-15 14:40:15 -0600 Damien45

Best approach to detect read numbers from 1 to 99

852

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1

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no

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2020-10-13 04:33:44 -0600 berak

728 questions

Help with createFisherFaceRecognizer();

Training a lbp detector/classifier

Face Recognition in Video using OpenCV gives unhandled exception

face recognition using opencv2.4.3

facerec_demo model->predict exception thrown

FaceRecognizer is there any way to use prediction with string format (instead of int). [closed]

Assertion error in cvtColor

Facial recognition run error: Image step is wrong

Hey guys I am doing a face recognition project using LBPHFaceRecognizer the problen is that for few images (test images) the model is recognizing and for few images it is giving this error: (-215:Assertion failed) s >= 0 in function 'cv::setSize' [closed]

Road detection and machine learning

openCV 2.4.9.1 sample creation works but gives error message

OpenCV Python face accuracy

OpenCV 3.1.0 Cascade Classifier detectMultiScale provides inconsistent results on different machines

Best method to detect facial hair?

how does opencv handle rectangles feature of haar cascade classifier?

Face detection using OpenCV with Java

Low accuracy of SVM on Android

Using an old format Haar Cascade Classifier File

correct parameters for createsamples and traincascade

LBP for vehicle detection

Fastest, and most accurate eye finding algorithm available in opencv?

what kind of approach can be used for recognize hand signs?

haar detection bouding box

C++ error in haartraining attempts

Load Single Channel Numpy Array Image with detectMultiScale

how to dispaly percentage pridiction in fisher face recoginition algorithm

Training and Test images must be of equal size

Detections too small with OpenCV Cascade classifier

Best approach to detect read numbers from 1 to 99

I'm getting the following error while using OpenCV

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