Questions - OpenCV Q&A Forum

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2020-12-18 07:38:58 -0600 sigmoid90

Problem with undistortPoints() function in pose estimation of image

1k

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2020-12-07 12:20:58 -0600 coldheat

tvec and coordinate systems q

757

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2020-12-06 08:22:42 -0600 sigmoid90

Problem with building pose Mat from rotation and translation matrices

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1

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1

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2020-12-03 07:02:10 -0600 fadeto404

Pixel-wise matrix multiplication

451

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2020-11-04 11:26:41 -0600 vdhers

C++ allocate and copy matrix take too much time

742

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2

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2020-10-07 14:36:18 -0600 superfly

how do I add missing module cv::drawFrameAxes without breaking installation

242

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2020-06-15 12:14:18 -0600 superfly

Cx, Cy not equal to specs?

208

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2020-04-23 11:06:48 -0600 RockStar1337

Strange streching effects in photo due to transformation by matrix

2k

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3

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1

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2020-01-09 02:32:30 -0600 LBerger

convert cv::Mat to vector<vector<uchar>> img;

matrix

394

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2019-07-12 01:01:18 -0600 chinesestud

How to hash - Opencv matrix, lbph histogram? [closed]

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2019-07-02 07:57:07 -0600 Ani_Cv

Bus error (core dumped) while declaring cv::Mat

260

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2019-07-01 11:15:59 -0600 AmberElferink

sortIdx matrix in both directions gone wrong

821

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2019-02-19 06:21:27 -0600 LBerger

Matrix, invert() memory leak

387

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2019-02-05 11:26:01 -0600 machinecore

SolvePNP. Compensate for head rotation

5k

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1

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no

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2019-01-17 04:01:07 -0600 berak

error: no matching member function for call to 'at'

1k

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1

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2018-11-24 09:44:18 -0600 berak

How to flatten 2D matrix and then copy it to a specific column in another matrix

508

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1

answer

1

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2018-11-20 17:23:11 -0600 nick_leo

Finding largest rectangles in matrix

2k

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1

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2018-09-18 05:03:55 -0600 hayley

How to extract RANSAC's inlier object points from the matrix produced by solvePNPRansac() or findHomography()?

190

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2018-08-08 03:49:01 -0600 balea

How can I get the FFT matrix?

FFT
matrix

618

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2018-06-02 00:42:39 -0600 AurekSkyclimber

Converting a point into another reference frame (Aruco)

aruco
matrix

7k

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1

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no

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2018-04-29 15:25:41 -0600 bennog

How do I properly add two Matrices?

800

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1

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2018-04-15 12:07:33 -0600 LBerger

Row and Col problem when Mat represents 3d point cloud

614

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1

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2018-03-04 12:15:34 -0600 berak

Best way to apply a function to each element of Mat (Android)

21k

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1

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2018-02-28 02:41:22 -0600 berak

In Python, is there a method or operator to determine if a frame is empty or an all zero-matrix?

1k

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2018-01-30 12:00:08 -0600 raisa_

Matrix Multiplication Type Issue

777

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2018-01-23 08:53:19 -0600 sarah1802

Aruco Detection - OpenCV Error: Incorrect size of input array

5k

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1

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2017-12-08 05:08:36 -0600 kbarni

Do I need an OpenCV function to read cursor position?

382

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no

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-1

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2017-11-29 06:00:35 -0600 arigarcia

Java Multi threads with OpenCV 3.3.1

2k

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1

answer

1

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2017-12-06 14:47:08 -0600 sjhalayka

OpenGL 4x4 camera matrix, OpenCV ?x? camera matrix

1k

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1

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no

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2017-10-19 20:52:40 -0600 Tetragramm

146 questions

Problem with undistortPoints() function in pose estimation of image

tvec and coordinate systems q

Problem with building pose Mat from rotation and translation matrices

Pixel-wise matrix multiplication

C++ allocate and copy matrix take too much time

how do I add missing module cv::drawFrameAxes without breaking installation

Cx, Cy not equal to specs?

Strange streching effects in photo due to transformation by matrix

convert cv::Mat to vector<vector<uchar>> img;

How to hash - Opencv matrix, lbph histogram? [closed]

Bus error (core dumped) while declaring cv::Mat

sortIdx matrix in both directions gone wrong

Matrix, invert() memory leak

SolvePNP. Compensate for head rotation

error: no matching member function for call to 'at'

How to flatten 2D matrix and then copy it to a specific column in another matrix

Finding largest rectangles in matrix

How to extract RANSAC's inlier object points from the matrix produced by solvePNPRansac() or findHomography()?

How can I get the FFT matrix?

Converting a point into another reference frame (Aruco)

How do I properly add two Matrices?

Row and Col problem when Mat represents 3d point cloud

Best way to apply a function to each element of Mat (Android)

In Python, is there a method or operator to determine if a frame is empty or an all zero-matrix?

Matrix Multiplication Type Issue

Aruco Detection - OpenCV Error: Incorrect size of input array

Do I need an OpenCV function to read cursor position?

Java Multi threads with OpenCV 3.3.1

OpenGL 4x4 camera matrix, OpenCV ?x? camera matrix

Matrix exponential

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