Questions - OpenCV Q&A Forum

146

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no

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2015-12-22 09:12:20 -0600 Delauney

best resolution for negatives on traincascade?

traincascade

4k

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2

answers

6

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2020-03-29 10:31:54 -0600 ComputerVisionary

Missing HOG Cascade in Ver 3

HOG

2k

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1

answer

1

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2014-02-07 15:18:54 -0600 berak

CascadeClassifier::Load from Memory

cascadeclassifier

220

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1

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no

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2017-01-25 03:56:08 -0600 StevenPuttemans

Opencv3.1-Train dataset for temp stage can not be filled. Branch training terminated. Is this error if not how can i improve it further ?

13k

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3

answers

8

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2014-04-17 05:25:30 -0600 Hansg91

SVM bias on weights of positives and negatives

1k

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2

answers

2

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2014-02-10 06:17:34 -0600 StevenPuttemans

Performance utility for opencv_traincascade?

226

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no

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2014-07-07 18:58:52 -0600 soulslicer

HAAR training with OpenCL

#cvHaarCascadeClassi

1k

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1

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2

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2016-01-28 03:09:37 -0600 berak

how to use CascadeClassifier::read?

cascadeclassifier

375

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no

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2013-10-04 22:06:53 -0600 nhatphongtran

MacBeth Detection

284

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no

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2017-09-21 10:08:56 -0600 muhammad.umar600

Need Pre-trained classifier (xml) for Door detection

993

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1

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no

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2017-03-13 21:20:41 -0600 lqj1990

program will stuck when using detectMultiScale

112

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2013-11-10 16:14:31 -0600 8mike

How to view positives during Haar Cascade classification [closed]

383

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1

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no

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2018-04-27 06:22:47 -0600 StevenPuttemans

car detection using open cv

1k

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1

answer

1

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2014-11-02 16:40:21 -0600 _chris

Can I pause traincascade? How?

145

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no

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2016-05-19 18:58:39 -0600 Ramkumar Natarajan

opencv_traincascade to train in different colorspace

663

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1

answer

no

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2014-09-27 07:55:27 -0600 johncordeiro

Improve Brand Detection Quality

233

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no

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2017-03-21 07:09:35 -0600 Crazor

Recognizing object larger than camera FOV

objectrecognition

449

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no

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2014-03-20 18:33:09 -0600 WigglesTehPro

scan only the lower half of a ROI?/ ROI within an ROI? [closed]

89

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no

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2014-05-18 12:13:36 -0600 MSoegtrop

opencv_traincascade: How are positivies compared during training?

opencv_traincascade

4k

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2

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no

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2012-06-27 11:03:16 -0600 zx9r

Fish detection. Is haartraining a good approach ?

172

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no

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no

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2016-04-12 02:28:53 -0600 nikogamulin

Why the trained model's performance is not the same while running on PC and Android? [closed]

678

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1

answer

no

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2016-10-13 05:31:46 -0600 prala123

Cascade classifier detect multi scale always returns nothing.

opencv_traincascacde

797

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no

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no

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2013-04-28 08:48:05 -0600 XiaQing

OpenCV Error:Bad argument (Can not Get new Positive sample)

1k

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no

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2013-12-22 07:24:36 -0600 _Robert

How do I reduce the effects of lighting conditions for a face expression classification system?

455

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1

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2014-08-19 16:21:25 -0600 B.Gen.Jack.O.Neill

Why is LBP generaly faster than HAAR?

744

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1

answer

1

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2015-03-02 10:17:55 -0600 verified.human

Are cascades the best way to detect different mouth shapes on photos?

231

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no

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no

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2017-11-07 20:38:38 -0600 vbc

opencv traincascade positive and negative image

cascadeclassifier

4k

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1

answer

3

votes

2013-03-22 12:20:11 -0600 StevenPuttemans

Question about calculation of positive and negative examples for training a LBP classifier and not getting stuck because of a wrong number of nPOS and nNEG.

653

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1

answer

1

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2013-03-25 02:59:12 -0600 thdrksdfthmn

continue traincascade after computer crash

892

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1

answer

no

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2013-11-20 04:02:47 -0600 StevenPuttemans

728 questions

best resolution for negatives on traincascade?

Missing HOG Cascade in Ver 3

CascadeClassifier::Load from Memory

Opencv3.1-Train dataset for temp stage can not be filled. Branch training terminated. Is this error if not how can i improve it further ?

SVM bias on weights of positives and negatives

Performance utility for opencv_traincascade?

HAAR training with OpenCL

how to use CascadeClassifier::read?

MacBeth Detection

Need Pre-trained classifier (xml) for Door detection

program will stuck when using detectMultiScale

How to view positives during Haar Cascade classification [closed]

car detection using open cv

Can I pause traincascade? How?

opencv_traincascade to train in different colorspace

Improve Brand Detection Quality

Recognizing object larger than camera FOV

scan only the lower half of a ROI?/ ROI within an ROI? [closed]

opencv_traincascade: How are positivies compared during training?

Fish detection. Is haartraining a good approach ?

Why the trained model's performance is not the same while running on PC and Android? [closed]

Cascade classifier detect multi scale always returns nothing.

OpenCV Error:Bad argument (Can not Get new Positive sample)

How do I reduce the effects of lighting conditions for a face expression classification system?

Why is LBP generaly faster than HAAR?

Are cascades the best way to detect different mouth shapes on photos?

opencv traincascade positive and negative image

Question about calculation of positive and negative examples for training a LBP classifier and not getting stuck because of a wrong number of nPOS and nNEG.

continue traincascade after computer crash

after make -w 30 -h 30 opencv_createsamples run very very slowly

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