Questions - OpenCV Q&A Forum

26

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

Haar Cascade for fingers

54

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-1

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

Opencv 4.0.1 and Android Studio 3.3.2

116

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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]

55

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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

158

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

How to use CascadeClassifier::create in OpenCV 4.0?

27

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-2

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

multiple cascade classifiers in one loop

59

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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?

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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

456

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

OpenCV.js unable to load haar cascades [closed]

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

How to train cascade classifier

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

lbp cascade training to detect traffic signs

105

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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

65

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

I want to detect trees in image

433

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

Building detection in satellite imagery

672

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

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

28

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

How to identify the stem of a flower?

Haar

685

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

How to detect sunglasses in a human/facial region?

215

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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

108

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

Problem with Haar cascade

Haar
cascade

148

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

Training cuda::CascadeClassifier

195

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

Solved Need help running sample script for Cascade Classifier.

228

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

Best Cascade for detecting Mororcycles (side views)

270

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1

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

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

111

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

Cascade classier DetectMultiScale()

357

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

Segmentation fault (core dumped) when using opencv_createsamples

886

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2018-03-06 04:01:54 -0500 Joshitha

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

347

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1

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1

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2018-03-04 11:39:07 -0500 Joshitha

Insufficient memory in function cvAlloc, how to release memory?

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2018-03-03 11:37:57 -0500 Jad

162 questions

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.

Best Cascade for detecting Mororcycles (side views)

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

Cascade classier DetectMultiScale()

Segmentation fault (core dumped) when using opencv_createsamples

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

Insufficient memory in function cvAlloc, how to release memory?

error while visualizing the cascade stage features

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