Questions - OpenCV Q&A Forum

285

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2019-10-26 06:00:35 -0600 Shishigami

Issue writing Mat3b to GStreamer UDP sink

25k

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1

answer

no

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2019-10-26 19:23:42 -0600 adi1525

Video from IP camera can't find starting number cv::icvExtractPattern

1k

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answers

1

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2019-11-05 11:50:58 -0600 Soumya

How to write a vector<cv::Mat> to a single file? [closed]

579

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no

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2019-11-08 08:08:20 -0600 Dimitar Veljanovski

Debug Assertion Error when detecting object and scene points in OpenCV

c++
opencv

125

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no

answers

no

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2019-11-08 08:48:23 -0600 saurabh162

Could not find ChessboardCorners in following picture

opencv
c++

460

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no

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no

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2019-11-13 22:01:41 -0600 patrick129

Change camera resolution in C++?

c++
opencv

2k

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no

answers

no

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2019-11-16 15:35:56 -0600 [email protected]

Rotate by warpPerspective after getPerspectiveTransform by 4 points in C++

c++
opencv

470

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no

answers

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2019-11-19 09:36:21 -0600 TheEMcoder

findChessboardCorners() gives False in OpenCV 4.1.2 C++

623

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2019-11-19 11:13:41 -0600 zakaziko

Extract object and save it as an image.png using c++

c++
opencv

2k

views

1

answer

1

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2019-11-23 09:48:27 -0600 berak

How to save image data in shared pointer

c++
opencv

916

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1

answer

1

vote

2019-11-27 11:07:15 -0600 Naman Gupta

can we create a 5*5 kernel np array in c++

317

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no

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2

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2019-11-28 10:27:13 -0600 Elis4

How to use dnn as a detector for facemark ?

819

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1

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no

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2019-11-28 12:57:21 -0600 mvuori

Save image using callBack Function

489

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2019-11-30 11:44:56 -0600 bllu

OpenCV Compilation/Linking Errors in async.hpp, version.hpp, dict.hpp, etc. when #include <opencv2/dnn.hpp> and <opencv2/opencv.hpp>

281

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no

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2019-12-02 08:16:50 -0600 Kitnos

Problem displaying rectangle in a callBack function [closed]

402

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2019-12-03 08:27:29 -0600 Dimitar Veljanovski

How do I build a SLAM based tracking solution that tracks an object in 3D space

3k

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1

answer

1

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2019-12-06 06:49:21 -0600 berak

Finding Dominant colors in an image in c++

c++
opencv

1k

views

1

answer

no

votes

2019-12-09 12:16:06 -0600 gpcbitnik

How to pass image data from javascript to opencv c++ webassembly

89

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no

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no

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2019-12-11 02:21:36 -0600 it_master

How to associate a color value to a number?

c++
opencv

161

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no

answers

no

votes

2019-12-13 04:28:48 -0600 CNieberding

How to install OpenCV 32bit on Win64 machine

162

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2019-12-18 11:04:37 -0600 heisenburg007

Get video input when device not on uvc input

3k

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no

answers

no

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2019-12-28 07:54:19 -0600 berak

Assertion failed (!fixedType() || ((Mat*)obj)->type() == mtype) in cv::_OutputArray::create while Performing DFT

791

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no

answers

1

vote

2020-01-09 05:00:16 -0600 Sean87

Calibrating camera only for one plane

621

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2020-01-26 10:14:40 -0600 sreev

cuda nppial library not found while opencv compiling opencv-4.2.0

679

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no

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2020-01-29 04:19:30 -0600 eLtronicsvilla

How can I re-track an object if track(using optical flow) lost?

227

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1

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no

votes

2020-03-29 05:17:01 -0600 ComputerVisionary

Is there a way to use a trained CascadeClassifier for just classification in OpenCV 3.x?

134

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no

answers

1

vote

2020-02-10 04:55:13 -0600 osky

Tracing opencv functions for remap()

1k

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1

answer

no

votes

2020-02-15 01:11:59 -0600 berak

error: ‘imread’ was not declared in this scope

3k

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no

answers

1

vote

2020-02-16 21:57:05 -0600 ToanVnET

OpenCV-VideoWriter can not write *.mp4 with C++ ?

1k

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1

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no

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2020-02-18 10:00:56 -0600 kbarni

1,383 questions

Issue writing Mat3b to GStreamer UDP sink

Video from IP camera can't find starting number cv::icvExtractPattern

How to write a vector<cv::Mat> to a single file? [closed]

Debug Assertion Error when detecting object and scene points in OpenCV

Could not find ChessboardCorners in following picture

Change camera resolution in C++?

Rotate by warpPerspective after getPerspectiveTransform by 4 points in C++

findChessboardCorners() gives False in OpenCV 4.1.2 C++

Extract object and save it as an image.png using c++

How to save image data in shared pointer

can we create a 5*5 kernel np array in c++

How to use dnn as a detector for facemark ?

Save image using callBack Function

OpenCV Compilation/Linking Errors in async.hpp, version.hpp, dict.hpp, etc. when #include <opencv2/dnn.hpp> and <opencv2/opencv.hpp>

Problem displaying rectangle in a callBack function [closed]

How do I build a SLAM based tracking solution that tracks an object in 3D space

Finding Dominant colors in an image in c++

How to pass image data from javascript to opencv c++ webassembly

How to associate a color value to a number?

How to install OpenCV 32bit on Win64 machine

Get video input when device not on uvc input

Assertion failed (!fixedType() || ((Mat*)obj)->type() == mtype) in cv::_OutputArray::create while Performing DFT

Calibrating camera only for one plane

cuda nppial library not found while opencv compiling opencv-4.2.0

How can I re-track an object if track(using optical flow) lost?

Is there a way to use a trained CascadeClassifier for just classification in OpenCV 3.x?

Tracing opencv functions for remap()

error: ‘imread’ was not declared in this scope

OpenCV-VideoWriter can not write *.mp4 with C++ ?

how to detect discontinuity in object boundaries

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