Questions - OpenCV Q&A Forum

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2016-10-17 11:12:12 -0600 walatima

How to detect faces in image or video?

opencv#java#

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2017-07-02 21:51:36 -0600 wureka

Why vGPU (Tesla K80) on Google cloud slower than GTX940M on T460P

409

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2016-06-27 03:21:44 -0600 danaro

OpenCV algorithm freezes PLEASE HELP [unsolved] [closed]

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2015-09-11 05:04:53 -0600 StevenPuttemans

traincascade error - _cascadeDirName or _bgfileName or _vecFileName is NULL

traincascade

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2014-02-05 05:39:22 -0600 ART

Unspecified error in persistence.cpp during trainingcascade

422

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2016-08-02 10:58:31 -0600 shoemakerlevy9

Haar Cascade instability

156

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2016-10-07 03:48:13 -0600 StevenPuttemans

opencv_traincascade always halts on stage 4.i

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2013-10-22 03:06:52 -0600 samkhan13

Python, OpenCV: unable to make custom LBP cascade using opencv_traincascade

380

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2015-04-23 20:31:16 -0600 215

Unsupervised learning using openCV

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2016-11-09 04:22:33 -0600 StevenPuttemans

How to do HAAR training?

228

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2016-06-22 11:02:19 -0600 danaro

training stage-1 error

645

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2013-04-20 07:03:57 -0600 Hasni

how to get all files required for haar training of my object ?

155

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2016-02-10 20:03:09 -0600 person_I_swear

Object detector for unchanging object viewed from slightly different perstectives [closed]

546

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2014-08-12 01:22:21 -0600 Punith K

convert_cascade: error while loading shared libraries: libml.so.2.1: cannot open shared object file: No such file or directory [closed]

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2013-04-01 06:40:25 -0600 Guanta

Which is the best way to detect object in this case?

6k

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2013-07-19 06:39:24 -0600 StevenPuttemans

Getting Error "Image reader can not be created from -vec vector.vec and -bg bkg.dat"

6k

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2013-09-18 11:50:48 -0600 hughht5

What is a .vec file?

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2014-02-14 08:59:38 -0600 Astrgan

How to use opencv_createsamples to create many pictures?

opencv_createsamples

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2014-11-18 12:27:23 -0600 Pradeep C

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

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2015-01-05 17:55:54 -0600 jreinertnash

Background texture classification of portrait images

630

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2015-07-06 10:09:59 -0600 jackwayneright

opencv_traincascade stuck on precalculation when running LBP mode

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2015-07-16 06:00:19 -0600 angela

opencv_traincascade: obtaining number of features per stage

297

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2016-06-30 10:13:20 -0600 bertumen.wj

I plan to recognize paper bills by denomination but i can't think of a way to do so ... it must be invariant of illumination, rotation and scale. can i use haar or LBP ? do you have any suggestions?

304

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2016-12-26 06:04:55 -0600 petr.shypila

Object detection rectangle doesn't cover whole object

564

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2017-06-17 15:01:46 -0600 Eduardo

False positive (FP) decreasing methods

false-positive

408

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2016-08-20 12:02:20 -0600 mattm401

PR Curve for Cascade w/ detectMultiScale3: Never Completes

220

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2016-11-10 01:45:30 -0600 Poehe

Advice on Haar/LBP approach [closed]

892

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

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

231

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

opencv traincascade positive and negative image

cascadeclassifier

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

728 questions

How to detect faces in image or video?

Why vGPU (Tesla K80) on Google cloud slower than GTX940M on T460P

OpenCV algorithm freezes PLEASE HELP [unsolved] [closed]

traincascade error - _cascadeDirName or _bgfileName or _vecFileName is NULL

Unspecified error in persistence.cpp during trainingcascade

Haar Cascade instability

opencv_traincascade always halts on stage 4.i

Python, OpenCV: unable to make custom LBP cascade using opencv_traincascade

Unsupervised learning using openCV

How to do HAAR training?

training stage-1 error

how to get all files required for haar training of my object ?

Object detector for unchanging object viewed from slightly different perstectives [closed]

convert_cascade: error while loading shared libraries: libml.so.2.1: cannot open shared object file: No such file or directory [closed]

Which is the best way to detect object in this case?

Getting Error "Image reader can not be created from -vec vector.vec and -bg bkg.dat"

What is a .vec file?

How to use opencv_createsamples to create many pictures?

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

Background texture classification of portrait images

opencv_traincascade stuck on precalculation when running LBP mode

opencv_traincascade: obtaining number of features per stage

I plan to recognize paper bills by denomination but i can't think of a way to do so ... it must be invariant of illumination, rotation and scale. can i use haar or LBP ? do you have any suggestions?

Object detection rectangle doesn't cover whole object

False positive (FP) decreasing methods

PR Curve for Cascade w/ detectMultiScale3: Never Completes

Advice on Haar/LBP approach [closed]

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

opencv traincascade positive and negative image

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

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