Questions - OpenCV Q&A Forum

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2020-06-26 11:46:50 -0600 berak

Train from haarcascade frontface

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2020-06-24 23:05:05 -0600 neel19

I am getting this error: Invalid HAAR feature (expected: 'rw.r.x + rw.r.width <= W'), where > 'rw.r.x + rw.r.width' is 22 > must be less than or equal to > 'W' is 16

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2020-04-28 17:41:28 -0600 AndrakoValle

How to train more accurate Haar Cascades?

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2020-03-29 05:51:41 -0600 ComputerVisionary

Cannot detect cars

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2020-03-29 05:17:01 -0600 ComputerVisionary

Is there a way to use a trained CascadeClassifier for just classification in OpenCV 3.x?

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2020-03-29 04:56:40 -0600 ComputerVisionary

Train cascade classifier for game screenshots

cascadeclassifier

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no

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2020-01-08 17:43:05 -0600 simba

why value of levelWeights given by CascadeClassifier::detectMultiScale can be negative?

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2019-10-24 09:30:24 -0600 supra56

OpenCV 3 - Python's detectMultiScale3 fails in clipObjects

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2019-08-09 14:55:25 -0600 Programmerperson

OpenCV face detection results in "debug assertion failed"

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2019-06-05 03:44:48 -0600 supra56

CascadeClassifier doesn't work with cascade.xml trained by myself. It always blocked when use method detectMultiScale()

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2019-05-07 04:20:08 -0600 lovehell

Stage threshold in cascade training

cascadeclassifier

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2019-03-02 02:51:47 -0600 UnluckyTicket

Need help with training cascade classifier

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2019-02-21 04:17:13 -0600 berak

Can we create our own haar-cascade file for multi-view face detection

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2019-01-28 16:26:02 -0600 Michał Kowalczyk

1 image - 10 haar classifiers - process image once [closed]

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2019-01-05 10:11:41 -0600 wpadka

Haar cascade classifier - Multiple detecting same object

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2018-12-19 01:40:24 -0600 david cairns

Glare detection in image [closed]

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2018-12-10 07:44:12 -0600 Tomasz Grobelny

improving face detection accuracy [closed]

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2018-12-02 20:07:50 -0600 blues

cuda detectMultiScale gets inconsistent result on same image?

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2018-11-14 08:15:40 -0600 berak

Running multiple CascadeClassifiers - possible to reuse scaling?

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

Low accuracy of SVM on Android

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2018-10-13 11:41:14 -0600 berak

Only Cascade classifier makes an undefined error

cascadeclassifier

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2018-09-07 07:08:57 -0600 m93c

OpenCV.js unable to load haar cascades [closed]

152

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2018-08-21 05:48:48 -0600 berak

I am using rpi3 for face detection but error it is giving

cascadeclassifier

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2018-08-16 11:56:40 -0600 yoggiee

lbp cascade training to detect traffic signs [closed]

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2018-08-06 05:32:34 -0600 holger

Cascade classifier help

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2018-08-02 09:57:12 -0600 Zizhao

Can we do model ensemble on several cascade classifiers ?

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2018-07-13 06:38:46 -0600 ioemmano

Building detection in satellite imagery

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2018-07-06 10:12:08 -0600 Bleach

Cascade file trained in traincascade in cuda::CascadeClassifier

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2018-07-03 06:28:58 -0600 Nigeltve

'opencv_createsamples' is not recognized as an internal or external command

257

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2018-06-27 05:23:40 -0600 berak

253 questions

Train from haarcascade frontface

I am getting this error: Invalid HAAR feature (expected: 'rw.r.x + rw.r.width <= W'), where > 'rw.r.x + rw.r.width' is 22 > must be less than or equal to > 'W' is 16

How to train more accurate Haar Cascades?

Cannot detect cars

Is there a way to use a trained CascadeClassifier for just classification in OpenCV 3.x?

Train cascade classifier for game screenshots

why value of levelWeights given by CascadeClassifier::detectMultiScale can be negative?

OpenCV 3 - Python's detectMultiScale3 fails in clipObjects

OpenCV face detection results in "debug assertion failed"

CascadeClassifier doesn't work with cascade.xml trained by myself. It always blocked when use method detectMultiScale()

Stage threshold in cascade training

Need help with training cascade classifier

Can we create our own haar-cascade file for multi-view face detection

1 image - 10 haar classifiers - process image once [closed]

Haar cascade classifier - Multiple detecting same object

Glare detection in image [closed]

improving face detection accuracy [closed]

cuda detectMultiScale gets inconsistent result on same image?

Running multiple CascadeClassifiers - possible to reuse scaling?

Low accuracy of SVM on Android

Only Cascade classifier makes an undefined error

OpenCV.js unable to load haar cascades [closed]

I am using rpi3 for face detection but error it is giving

lbp cascade training to detect traffic signs [closed]

Cascade classifier help

Can we do model ensemble on several cascade classifiers ?

Building detection in satellite imagery

Cascade file trained in traincascade in cuda::CascadeClassifier

'opencv_createsamples' is not recognized as an internal or external command

Cascade training, background size.

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