Questions - OpenCV Q&A Forum

442

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2017-04-11 11:00:39 -0600 lovaj

Why my dense descriptor has bad performance?

254

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2015-11-30 05:21:58 -0600 czc080

Cant display the image after applyting exposed elbp function in python

createLBPH

360

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no

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no

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2017-10-25 08:32:24 -0600 wpadka

My Own Cascade Classifier: Can not get new positive sample. The most possible reason is insufficient count of samples in given vec-file.

241

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1

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2013-05-29 14:40:07 -0600 Heshan Sandeepa

why Invariant moments are slightly diffident for the same image

8k

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no

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2020-02-06 19:19:04 -0600 gersonmlb

Error cv :: VideoWriter :: open VIDEOIO (CV_IMAGES): raised OpenCV exception: when executing a .exe packaged from a .py

284

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

Need Pre-trained classifier (xml) for Door detection

103

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2019-08-28 11:32:01 -0600 Prvind Panday

Why i am unable to launch?

java
Eclipse

5k

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2016-12-09 07:02:52 -0600 alokitnigam

OpenCV Error: Bad argument (Unknown array type) in cv::cvarrToMat

java
opencv

856

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2014-06-26 09:50:32 -0600 Tam

CascadeClassifier

cascadeclassifier

420

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2013-11-22 07:17:21 -0600 tenta4

solvePnPRansac returns different results

433

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2019-05-21 15:01:04 -0600 violetforest

How to calculate pose and transformation for contours and its bounding rect for AR app?

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2014-09-21 15:44:32 -0600 Cross22

HoughLines Debug Assertion Failed

HoughLines

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2015-09-24 21:13:32 -0600 ChaoyuanYeh

Whats' the best way to speed up filtering a very large image by multi-processing?

531

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2013-04-10 10:41:26 -0600 AndyL

Recompile OpenCV 1.1 for 64 bit Windows 7

1k

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2016-06-14 04:58:30 -0600 arcticworker

What is the difference between Stump-based and Tree-based frontal face detector?

339

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2015-01-15 10:51:21 -0600 Willis

How to determine time to collision

android

192

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2019-05-01 01:20:59 -0600 lost_spirit0

OpenCV manager 2.4.9 incompatible with Android 8.0

android

541

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2014-02-25 06:08:47 -0600 CurlyB

OpenCV SURFDetector Range of minHessian

134

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2016-02-26 18:10:02 -0600 bakalolo

OpenCV cropped image distorted

opencv
c++

177

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no

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2016-11-27 16:19:55 -0600 adiprad

iOS Haar Cascade not working

ios

166

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2018-01-30 12:21:28 -0600 EsritInes

Number of stages haar training?

haartraining

640

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2019-09-17 07:16:18 -0600 bob mu

Python opencv writes frames to videos, memcpy errors leading to segmentation errors

175

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2016-11-14 13:33:08 -0600 LBerger

simple question:starting with open cv

190

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2014-02-25 21:07:32 -0600 Linchao

Possible code bug in frame blending in gpu/NPP_staging.cu

2k

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2020-03-27 13:44:20 -0600 scriptdiddy

Convert RGB array to YUV422 4:2:2 in Python

118

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2014-07-15 13:23:59 -0600 sao

3D histogram bins for android

1k

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-2

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2020-10-07 07:10:32 -0600 supra56

How to show the offset difference value between base image and reference image in OpenCV?

223

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2019-12-17 00:58:45 -0600 arafat

late fusion over color and texture descriptors

1k

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2016-05-16 10:34:24 -0600 renejse

Industrial USB camera for use in Python with Linux

1k

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no

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no

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2019-06-22 22:31:04 -0600 gavne

12,357 questions

Why my dense descriptor has bad performance?

Cant display the image after applyting exposed elbp function in python

My Own Cascade Classifier: Can not get new positive sample. The most possible reason is insufficient count of samples in given vec-file.

why Invariant moments are slightly diffident for the same image

Error cv :: VideoWriter :: open VIDEOIO (CV_IMAGES): raised OpenCV exception: when executing a .exe packaged from a .py

Need Pre-trained classifier (xml) for Door detection

Why i am unable to launch?

OpenCV Error: Bad argument (Unknown array type) in cv::cvarrToMat

CascadeClassifier

solvePnPRansac returns different results

How to calculate pose and transformation for contours and its bounding rect for AR app?

HoughLines Debug Assertion Failed

Whats' the best way to speed up filtering a very large image by multi-processing?

Recompile OpenCV 1.1 for 64 bit Windows 7

What is the difference between Stump-based and Tree-based frontal face detector?

How to determine time to collision

OpenCV manager 2.4.9 incompatible with Android 8.0

OpenCV SURFDetector Range of minHessian

OpenCV cropped image distorted

iOS Haar Cascade not working

Number of stages haar training?

Python opencv writes frames to videos, memcpy errors leading to segmentation errors

simple question:starting with open cv

Possible code bug in frame blending in gpu/NPP_staging.cu

Convert RGB array to YUV422 4:2:2 in Python

3D histogram bins for android

How to show the offset difference value between base image and reference image in OpenCV?

late fusion over color and texture descriptors

Industrial USB camera for use in Python with Linux

cmake cross-compile for andrid meeting "Compiler doesn't support baseline optimization flags"

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