Questions - OpenCV Q&A Forum

128

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2018-05-21 14:21:30 -0600 Nbb

How to look for deep valleys in a histogram ?

histogram

17k

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2017-09-22 11:53:05 -0600 Intoxica

Undefined Reference to cv::

undefined_references

176

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2018-07-07 01:06:51 -0600 Yantao Xie

Error: The document of the warpAffine is not in accordance with the source code

2k

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no

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2018-06-19 01:48:23 -0600 berak

NamedWindow followed by imshow and waitkey opens several windows which prevent the program from closing normally

python

234

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answers

1

vote

2013-08-02 10:46:09 -0600 Mostafa Sataki

How to automatically determine the compression rate in PCA?

124

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2018-02-09 19:34:00 -0600 cjacquel

Videocapture does not working

198

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2016-05-16 12:16:48 -0600 choco

how to detect several shapeless object in an image

215

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2016-05-21 18:39:54 -0600 [email protected]

Raspberri pi 2 + B and OpenVC

c++#RaspberryPi2

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?

8k

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2016-12-05 08:11:17 -0600 bivalvo

What's the correct way to release cv::Mat?

147

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2016-10-11 05:52:14 -0600 skm

OpenCV stitching - Bundle Ray Adjuster adjusts total rotation to > 360º when it shouldn't

c++opencv#stitching

479

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2017-12-09 03:44:37 -0600 procton

Road detection and machine learning

659

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2017-10-16 07:50:03 -0600 Pavel Iacovlev

Converting Hugin pto lens parameters to OpenCV compatible ones

111

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2014-02-18 02:47:19 -0600 stefangachter

cv::Algorithm is singleton?

301

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-1

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2016-12-21 15:19:09 -0600 Lafi

Runing stereo match simple

1k

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2016-06-02 17:37:36 -0600 VanGog

Where are OpenCV 3.1 VC10 Windows x86 binaries?

109

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2016-12-08 12:02:24 -0600 bird12358

Resolution of device

Device

859

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2015-07-10 13:12:30 -0600 mehrang

how to increase fps camera?

493

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2017-10-08 14:46:54 -0600 saif92

detect a object by feature matching using FLANN

895

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1

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2013-05-29 08:21:37 -0600 David31

Is it possible to increase the speed of findChessboardCorners

551

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2017-08-11 04:04:17 -0600 dustsigns

Setting pose of Viz3d changes camera parameters

637

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2016-02-27 05:45:30 -0600 sammoes

3.1 samples CUDA, compiling with CUDA

793

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2016-10-10 22:29:36 -0600 jmz19910110

How can I convert Yuv420 to BGR in gpu mode

gpu

1k

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2014-08-22 06:23:00 -0600 Anilkumar

How to detect and crop the rectangle shape from bitmap using android opencv without using any c/c++ code ?

android

795

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2015-10-11 14:04:15 -0600 windy54

Opencv 3.0.0 python face recognizer has no attribute getMat

FaceRecognizer

299

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no

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2019-06-26 08:09:51 -0600 kevincvanhorn

CalcHist gives different results on C++ vs Python

351

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2020-04-13 09:56:28 -0600 JackyKoo

How to detect angle of rotation of my target object in the image

316

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2020-05-07 11:30:45 -0600 LiorA

Looking for a recent guide to build Opencv4Android.

322

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no

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2018-03-14 10:12:06 -0600 berak

Build solution failed: Cannot open opencv_core340d.lib

941

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no

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1

vote

2014-04-15 02:49:12 -0600 lpb

12,357 questions

How to look for deep valleys in a histogram ?

Undefined Reference to cv::

Error: The document of the warpAffine is not in accordance with the source code

NamedWindow followed by imshow and waitkey opens several windows which prevent the program from closing normally

How to automatically determine the compression rate in PCA?

Videocapture does not working

how to detect several shapeless object in an image

Raspberri pi 2 + B and OpenVC

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?

What's the correct way to release cv::Mat?

OpenCV stitching - Bundle Ray Adjuster adjusts total rotation to > 360º when it shouldn't

Road detection and machine learning

Converting Hugin pto lens parameters to OpenCV compatible ones

cv::Algorithm is singleton?

Runing stereo match simple

Where are OpenCV 3.1 VC10 Windows x86 binaries?

Resolution of device

how to increase fps camera?

detect a object by feature matching using FLANN

Is it possible to increase the speed of findChessboardCorners

Setting pose of Viz3d changes camera parameters

3.1 samples CUDA, compiling with CUDA

How can I convert Yuv420 to BGR in gpu mode

How to detect and crop the rectangle shape from bitmap using android opencv without using any c/c++ code ?

Opencv 3.0.0 python face recognizer has no attribute getMat

CalcHist gives different results on C++ vs Python

How to detect angle of rotation of my target object in the image

Looking for a recent guide to build Opencv4Android.

Build solution failed: Cannot open opencv_core340d.lib

reframing an image using a 3D Transform - need help

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