Questions - OpenCV Q&A Forum

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2013-07-26 03:50:44 -0600 Dominik

Matrix left division

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2014-02-21 03:18:17 -0600 jcrose

How to multiply point3f with matx type

3k

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1

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1

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2014-05-14 04:45:06 -0600 AlexofNTU

The coordinate system of pinhole camera model

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2014-04-25 06:23:30 -0600 radialmind

Stitching: camera matrices (R and t) from P=K[R|T]

618

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1

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1

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2014-11-14 04:14:40 -0600 berak

modify pixel of image with 0.01

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3

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1

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2015-02-19 16:16:38 -0600 TrustMeImAnEngineer

Sine or Cosine of every element in Mat (c++)

364

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2015-04-04 06:04:23 -0600 Gilad Darmon

2D matrix multiplication in 2D matrix error

matrix

741

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2015-07-01 12:09:02 -0600 dvmc

Access violation when using cv::sum() on ROI of a Matrix

1k

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1

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1

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2015-08-05 08:21:27 -0600 SteveBorges

Essential matrix 6x3 (expecting 3x3)

581

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1

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1

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2015-11-13 11:56:24 -0600 Der Luftmensch

Max-Clique Approximation cv::Mat summation

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2016-01-08 13:54:12 -0600 theodore

reshape matrix

479

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2016-02-21 09:28:09 -0600 liquidmetal

Running into memory issues when using cv::cuda::sum

CUDA
matrix

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1

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1

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2016-03-22 10:16:28 -0600 Pedro Batista

Convert Mat.type and convert Mat to vector

matrix

2k

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1

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1

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

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

512

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1

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

Finding largest rectangles in matrix

2k

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3

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

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

matrix

1k

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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

5k

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2

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2

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2012-07-30 09:30:42 -0600 sammy

multiply two points and matrix

8k

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1

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2

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2012-11-12 09:00:33 -0600 SR

different step size output for cv::Mat::step1

12k

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2

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2

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2013-04-08 12:54:31 -0600 Guanta

Product of two matrices

256

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1

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2

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2015-06-03 09:07:09 -0600 Jens

Bug - OpenCV 3.0.0-rc1 - cv::Mat memory reallocation using push_back fails

911

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1

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2

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2017-08-22 00:42:51 -0600 berak

Understanding cv::Mat

matrix

600

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no

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3

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2013-01-08 15:49:21 -0600 memek

Rotation from getPerspectiveTransform

7k

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1

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3

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2013-02-18 08:14:59 -0600 matt.hammer

Results of camera calibration vary

19k

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2

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4

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2015-10-24 14:14:03 -0600 theodore

is there any efficient/fast/best way to remove/delete a given row/col from a cv::Mat?

45k

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1

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8

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2012-08-10 12:46:09 -0600 Ilya Lysenkov

146 questions

Matrix left division

How to multiply point3f with matx type

The coordinate system of pinhole camera model

Stitching: camera matrices (R and t) from P=K[R|T]

modify pixel of image with 0.01

Sine or Cosine of every element in Mat (c++)

2D matrix multiplication in 2D matrix error

Access violation when using cv::sum() on ROI of a Matrix

Essential matrix 6x3 (expecting 3x3)

Max-Clique Approximation cv::Mat summation

reshape matrix

Running into memory issues when using cv::cuda::sum

Convert Mat.type and convert Mat to vector

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

Finding largest rectangles in matrix

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

Pixel-wise matrix multiplication

multiply two points and matrix

different step size output for cv::Mat::step1

Product of two matrices

Bug - OpenCV 3.0.0-rc1 - cv::Mat memory reallocation using push_back fails

Understanding cv::Mat

Rotation from getPerspectiveTransform

Results of camera calibration vary

is there any efficient/fast/best way to remove/delete a given row/col from a cv::Mat?

Concatenating matrices

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