Questions - OpenCV Q&A Forum

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

Matrix Multiplication Type Issue

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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?

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no

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

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

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

Row and Col problem when Mat represents 3d point cloud

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

How do I properly add two Matrices?

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

Converting a point into another reference frame (Aruco)

aruco
matrix

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

How can I get the FFT matrix?

FFT
matrix

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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()?

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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

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

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

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

SolvePNP. Compensate for head rotation

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

Matrix, invert() memory leak

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

sortIdx matrix in both directions gone wrong

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

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

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

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

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

Strange streching effects in photo due to transformation by matrix

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

Cx, Cy not equal to specs?

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

C++ allocate and copy matrix take too much time

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

tvec and coordinate systems q

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

Problem with undistortPoints() function in pose estimation of image

359

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1

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-1

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2016-07-05 12:54:09 -0600 Eduardo

gradient filter

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2017-04-22 18:06:50 -0600 opencvddddd

pass cv::MAT as pointer to a function in C++

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-1

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2017-08-13 13:58:29 -0600 Shabrina

Why I can't add matrix

382

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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

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2

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

146 questions

Matrix Multiplication Type Issue

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

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

Row and Col problem when Mat represents 3d point cloud

How do I properly add two Matrices?

Converting a point into another reference frame (Aruco)

How can I get the FFT matrix?

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

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

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

SolvePNP. Compensate for head rotation

Matrix, invert() memory leak

sortIdx matrix in both directions gone wrong

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

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

Strange streching effects in photo due to transformation by matrix

Cx, Cy not equal to specs?

C++ allocate and copy matrix take too much time

Problem with building pose Mat from rotation and translation matrices

tvec and coordinate systems q

Problem with undistortPoints() function in pose estimation of image

gradient filter

pass cv::MAT as pointer to a function in C++

Why I can't add matrix

Java Multi threads with OpenCV 3.3.1

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

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