Questions - OpenCV Q&A Forum

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2020-09-01 09:38:52 -0500 berak

Haar Cascade or ...? OpenCV detection

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2020-06-24 23:05:05 -0500 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

224

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2020-05-22 08:27:02 -0500 supra56

[SOLVED]Determining number of Traffic Light Pattern after Detecting Traffic Light [closed]

128

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2020-05-17 02:41:26 -0500 berak

Best Face Detection Trained Data for Haar Cascade Classifier?

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3

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2020-03-29 06:10:32 -0500 ComputerVisionary

Can someone explain me these terms (acceptanceRatio, HR, FA) in training haar cascade, and "acceptanceRatio 800:4.97153e-05" is it consider good?

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2019-10-24 09:30:24 -0500 supra56

OpenCV 3 - Python's detectMultiScale3 fails in clipObjects

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2019-07-05 13:51:00 -0500 ikmcdaniel2003

How to get 'opencv_createsamples' and other apps for Haar

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2019-04-08 09:01:00 -0500 jonasiyou

Haar Cascade for fingers

127

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2019-03-26 00:53:39 -0500 jhaprade

Opencv 4.0.1 and Android Studio 3.3.2

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2019-03-03 03:44:29 -0500 LBerger

How do I evaluate the performance of Haar Cascade in test data ? How do we classify the set of images in different categories using Haar Cascade, just like CNN does?

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2019-01-28 16:26:02 -0500 Michał Kowalczyk

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

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2019-01-16 04:55:03 -0500 StevenPuttemans

What algorithms are best used for recognizing objects in the street from a video stream

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2018-12-10 22:55:26 -0500 berak

How to use CascadeClassifier::create in OpenCV 4.0?

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-2

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2018-11-20 17:35:12 -0500 yoggiee

multiple cascade classifiers in one loop

264

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2018-10-24 08:27:50 -0500 berak

How large should the dataset be when using cv2 recognizers (FisherFace, LBPH)? 10 images? 20? 100?

103

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2018-09-26 13:09:17 -0500 Ryan Lewkowicz

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

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2018-09-12 06:54:18 -0500 m93c

OpenCV.js in Web Worker problem

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2

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2018-09-07 07:08:57 -0500 m93c

OpenCV.js unable to load haar cascades [closed]

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2

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2018-08-18 02:21:08 -0500 Vajrayudha Ristiawanto

How to train cascade classifier

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1

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2018-08-16 11:56:40 -0500 yoggiee

lbp cascade training to detect traffic signs

320

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4

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2018-08-06 21:13:50 -0500 BigJinge

The Integrated Catflap : Fine Tuning Cascade / Deep Learning

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2018-08-04 19:39:49 -0500 m7ammad7assan

I want to detect trees in image

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2018-07-13 06:38:46 -0500 ioemmano

Building detection in satellite imagery

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2018-07-03 06:28:58 -0500 Nigeltve

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

57

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2018-06-23 13:47:24 -0500 jogl

How to identify the stem of a flower?

Haar

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2018-06-01 05:06:44 -0500 arunponnusamy

How to detect sunglasses in a human/facial region?

331

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-1

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2018-05-21 13:31:20 -0500 DonT

Android Studio and OpenCV - Cascade Object Detector - Location of Object

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2018-05-07 12:17:49 -0500 karimbgmail

Problem with Haar cascade

Haar
cascade

306

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1

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no

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2018-04-27 02:07:27 -0500 berak

Training cuda::CascadeClassifier

297

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1

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2018-04-13 11:02:00 -0500 Marko5280

166 questions

Haar Cascade or ...? OpenCV detection

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

[SOLVED]Determining number of Traffic Light Pattern after Detecting Traffic Light [closed]

Best Face Detection Trained Data for Haar Cascade Classifier?

Can someone explain me these terms (acceptanceRatio, HR, FA) in training haar cascade, and "acceptanceRatio 800:4.97153e-05" is it consider good?

OpenCV 3 - Python's detectMultiScale3 fails in clipObjects

How to get 'opencv_createsamples' and other apps for Haar

Haar Cascade for fingers

Opencv 4.0.1 and Android Studio 3.3.2

How do I evaluate the performance of Haar Cascade in test data ? How do we classify the set of images in different categories using Haar Cascade, just like CNN does?

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

What algorithms are best used for recognizing objects in the street from a video stream

How to use CascadeClassifier::create in OpenCV 4.0?

multiple cascade classifiers in one loop

How large should the dataset be when using cv2 recognizers (FisherFace, LBPH)? 10 images? 20? 100?

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

OpenCV.js in Web Worker problem

OpenCV.js unable to load haar cascades [closed]

How to train cascade classifier

lbp cascade training to detect traffic signs

The Integrated Catflap : Fine Tuning Cascade / Deep Learning

I want to detect trees in image

Building detection in satellite imagery

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

How to identify the stem of a flower?

How to detect sunglasses in a human/facial region?

Android Studio and OpenCV - Cascade Object Detector - Location of Object

Problem with Haar cascade

Training cuda::CascadeClassifier

Solved Need help running sample script for Cascade Classifier.

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