Questions - OpenCV Q&A Forum

45k

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1

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8

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

Concatenating matrices

18k

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2

answers

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?

594

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no

answers

3

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

Rotation from getPerspectiveTransform

7k

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1

answer

3

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

Results of camera calibration vary

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

answer

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

248

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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

861

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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

2k

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1

answer

1

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2012-11-08 11:30:48 -0600 Simone

cv::Mat divide by last row.

matrix

3k

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2

answers

1

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2014-03-05 04:42:54 -0600 tuannhtn

missing cv::Mat::zeros(int ndims, const int* sz, int type)

15k

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1

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1

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2012-12-03 14:34:43 -0600 AlexanderShishkov

cv::sum() and cv::norm() for CV_U8...

matrix

7k

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2

answers

1

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2013-01-26 04:55:06 -0600 AlexanderShishkov

copy selected row of a matrix to another

3k

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1

answer

1

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2013-02-20 03:39:36 -0600 shray

floor of a matrix in OpenCV 2.4.3

matrix
c++

4k

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1

answer

1

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2013-02-19 03:20:23 -0600 Guanta

Access multiple channels in Mat

3k

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1

answer

1

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2013-02-26 09:59:17 -0600 Mathieu Barnachon

Fill a matrix

364

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1

answer

1

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2013-04-02 05:05:09 -0600 Daniil Osokin

Matrix access isn't working correct

3k

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2

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1

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2013-05-15 09:14:07 -0600 Guanta

Matrix multiplication

520

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no

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1

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

Matrix left division

1k

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no

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1

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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

1k

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no

answers

1

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

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

614

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1

answer

1

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

modify pixel of image with 0.01

6k

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3

answers

1

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

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

336

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no

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1

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

2D matrix multiplication in 2D matrix error

matrix

738

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no

answers

1

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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

answer

1

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

Essential matrix 6x3 (expecting 3x3)

571

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1

answer

1

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

Max-Clique Approximation cv::Mat summation

1k

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no

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1

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

reshape matrix

463

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no

answers

1

vote

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

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

CUDA
matrix

146 questions

Concatenating matrices

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

Rotation from getPerspectiveTransform

Results of camera calibration vary

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

cv::Mat divide by last row.

missing cv::Mat::zeros(int ndims, const int* sz, int type)

cv::sum() and cv::norm() for CV_U8...

copy selected row of a matrix to another

floor of a matrix in OpenCV 2.4.3

Access multiple channels in Mat

Fill a matrix

Matrix access isn't working correct

Matrix multiplication

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

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