Questions - OpenCV Q&A Forum

2k

views

3

answers

no

votes

2018-05-18 13:05:24 -0600 sjhalayka

ML svm, k-nn image recognition examples in c++

2k

views

2

answers

no

votes

2019-11-05 06:01:18 -0600 Nori5700

Cannot open include file: 'opencv2/core/utils/tls.hpp

c++#opencv

10k

views

2

answers

1

vote

2019-11-13 01:36:22 -0600 berak

undefined reference to imread

c++#opencv

539

views

1

answer

no

votes

2015-04-07 05:56:47 -0600 theodore

measuring height of color using pixel. [closed]

c++#opencv

613

views

1

answer

no

votes

2015-04-09 16:27:09 -0600 sturkmen

how to get bounding rectangle on both window??

c++#opencv

198

views

1

answer

no

votes

2015-06-01 07:32:28 -0600 thdrksdfthmn

why I am not getting Image??

c++#opencv

290

views

1

answer

1

vote

2015-06-07 01:04:00 -0600 sh

convertTo performance in Android native code

1k

views

1

answer

no

votes

2015-07-15 15:20:36 -0600 LBerger

Put decoded base64 data into cv::Mat variable

c++#opencv

302

views

1

answer

1

vote

2015-11-13 04:31:23 -0600 sturkmen

Projects on open.

1k

views

1

answer

no

votes

2015-11-30 10:06:39 -0600 LorenaGdL

how to convert image in rectangle into gray??

c++#opencv

340

views

1

answer

no

votes

2016-01-15 03:34:56 -0600 StevenPuttemans

I am a new in programming and opencv as well, I would like to learn it in a perfect way possible. how can I read a video from a file? is there any requirement to do so?

c++#opencv

1k

views

1

answer

no

votes

2016-02-10 10:46:06 -0600 berak

Numpy Arrays

749

views

1

answer

no

votes

2016-04-14 20:39:24 -0600 Tetragramm

How can I compare an ideal projection with a real projection?

c++#opencv

1k

views

1

answer

no

votes

2016-05-27 01:04:14 -0600 kevgeo

HOG:How much to resize image when calculating HOG features?

c++#opencv

221

views

1

answer

no

votes

2016-06-09 08:41:31 -0600 kbarni

Scene Reconstruction

4k

views

1

answer

no

votes

2016-06-11 05:27:20 -0600 berak

Calculate affine transformation matrix

c++#opencv

1k

views

1

answer

no

votes

2016-06-13 06:26:44 -0600 kevgeo

Finding Rank of Kernel

80

views

1

answer

no

votes

2016-06-29 21:06:47 -0600 berak

I have problem with changing array data to matrix.

c++#opencv

62

views

1

answer

no

votes

2016-07-01 03:18:53 -0600 berak

Unexpected behavior of the program

c++#opencv

512

views

1

answer

no

votes

2016-07-23 03:04:15 -0600 berak

why composeRT function is showing error for column vectors?

3k

views

1

answer

no

votes

2016-07-27 00:35:22 -0600 berak

findChessboardCorners returing false boolean value?

4k

views

1

answer

1

vote

2016-08-22 02:51:38 -0600 FooBar

identifier 'imshow' and 'waitkey' is undefined

c++#opencv

3k

views

1

answer

no

votes

2016-10-21 04:30:21 -0600 kbarni

How to read 10 bit tiff satellite image in opencv?

c++#opencv

706

views

1

answer

no

votes

2016-11-01 10:34:02 -0600 berak

I am trying to recognize facial emotion using SVM, however every time I run the program I get an error stating "assertion failed (samples.cols== var_count && samples.type == CV_32F) in cv::ml::SVMImpl::predict in file....... line 1919"

c++#opencv

90

views

1

answer

no

votes

2016-11-11 07:54:43 -0600 berak

I am working on recognition of faces in given videos with provided Data base.I am using createFisherFaceRecognizer() . But I am not getting Proper output. is it problem with Data base or the predict method, which i have used.

4k

views

1

answer

no

votes

2016-12-26 07:46:21 -0600 berak

Default color space for frames in video

c++#opencv

69

views

1

answer

no

votes

2017-01-21 02:39:07 -0600 berak

How to retrieve the matched lines from the BinaryDescriptorMatcher

c++#opencv

379

views

1

answer

no

votes

2017-01-25 09:30:18 -0600 LBerger

Problem with call of function bm3dDenoising() and xphoto ...

277

views

1

answer

no

votes

2017-01-28 06:33:38 -0600 agatte

How to compile opencv project in cmake [closed]

488

views

1

answer

no

votes

2017-02-13 01:56:51 -0600 LBerger

How to get the total number of black pixels in the connected component to which a pixel is attached?

c++#opencv

77 questions

ML svm, k-nn image recognition examples in c++

Cannot open include file: 'opencv2/core/utils/tls.hpp

undefined reference to imread

measuring height of color using pixel. [closed]

how to get bounding rectangle on both window??

why I am not getting Image??

convertTo performance in Android native code

Put decoded base64 data into cv::Mat variable

Projects on open.

how to convert image in rectangle into gray??

I am a new in programming and opencv as well, I would like to learn it in a perfect way possible. how can I read a video from a file? is there any requirement to do so?

Numpy Arrays

How can I compare an ideal projection with a real projection?

HOG:How much to resize image when calculating HOG features?

Scene Reconstruction

Calculate affine transformation matrix

Finding Rank of Kernel

I have problem with changing array data to matrix.

Unexpected behavior of the program

why composeRT function is showing error for column vectors?

findChessboardCorners returing false boolean value?

identifier 'imshow' and 'waitkey' is undefined

How to read 10 bit tiff satellite image in opencv?

I am trying to recognize facial emotion using SVM, however every time I run the program I get an error stating "assertion failed (samples.cols== var_count && samples.type == CV_32F) in cv::ml::SVMImpl::predict in file....... line 1919"

I am working on recognition of faces in given videos with provided Data base.I am using createFisherFaceRecognizer() . But I am not getting Proper output. is it problem with Data base or the predict method, which i have used.

Default color space for frames in video

How to retrieve the matched lines from the BinaryDescriptorMatcher

Problem with call of function bm3dDenoising() and xphoto ...

How to compile opencv project in cmake [closed]

How to get the total number of black pixels in the connected component to which a pixel is attached?

Links

Contributors

Tags