Questions - OpenCV Q&A Forum

165

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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

375

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

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

633

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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

223

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

How to get 'opencv_createsamples' and other apps for Haar [closed]

426

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

Haar Cascade for fingers [closed]

399

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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?

126

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

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

133

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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

711

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

How to use CascadeClassifier::create in OpenCV 4.0?

548

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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?

158

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

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

752

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

OpenCV.js in Web Worker problem

3k

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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

328

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

lbp cascade training to detect traffic signs [closed]

523

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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

249

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

I want to detect trees in image

2k

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

Building detection in satellite imagery

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1

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

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

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

How to detect sunglasses in a human/facial region?

559

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

Problem with Haar cascade

Haar
cascade

443

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

Training cuda::CascadeClassifier

374

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

Solved Need help running sample script for Cascade Classifier.

947

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2018-04-05 00:19:04 -0500 vishwaprakash

Best Cascade for detecting Mororcycles (side views) [closed]

1k

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2018-03-16 01:57:39 -0500 Joshitha

Bad argument in function cvReleaseData, how to fix the error?

266

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2018-03-09 08:55:21 -0500 StevenPuttemans

Cascade classier DetectMultiScale()

737

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no

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2018-03-06 17:22:10 -0500 nikifaets

155 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 [closed]

Haar Cascade for fingers [closed]

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?

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 [closed]

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 detect sunglasses in a human/facial region?

Problem with Haar cascade

Training cuda::CascadeClassifier

Solved Need help running sample script for Cascade Classifier.

Best Cascade for detecting Mororcycles (side views) [closed]

Bad argument in function cvReleaseData, how to fix the error?

Cascade classier DetectMultiScale()

Segmentation fault (core dumped) when using opencv_createsamples

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