Questions - OpenCV Q&A Forum

548

views

2

answers

no

votes

2018-12-06 08:25:27 -0600 phillity

How facemarkLBF work?

face

5k

views

2

answers

no

votes

2018-12-13 02:53:38 -0600 GhostRider

undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)' with QT5.8

opencv
qt

1k

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2

answers

1

vote

2018-12-11 00:10:30 -0600 berak

MultiTracker Rois

2k

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2

answers

no

votes

2018-12-11 20:26:05 -0600 supra56

(u->refcount == 0) in deallocate

2k

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2

answers

no

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2019-09-24 05:25:22 -0600 paulino

How to find the id/index of aruco marker based on its relative position?

aruco

3k

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2

answers

1

vote

2018-12-14 05:12:19 -0600 berak

imread and Russian language path to img

imread

612

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2

answers

2

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2018-12-14 06:23:33 -0600 sturkmen

How can I divide an image into two specific polygons?

2k

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2

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no

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2018-12-16 11:36:39 -0600 berak

OpenCV DisplayImage Example Errors

408

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2

answers

2

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2018-12-19 15:11:45 -0600 sturkmen

setMouseCallback multiples rectangles

514

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2

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no

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2019-01-07 07:46:18 -0600 supra56

Is there any way to recognize the camera device using HDMI cable(without USB)?

4k

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2

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4

votes

2019-01-07 15:59:12 -0600 sjhalayka

How to detect peaks on histograms?

591

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2

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no

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2019-01-08 09:04:18 -0600 supra56

Code from the tutorial doesn't work

10k

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2

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no

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2019-04-10 01:38:49 -0600 Nitinnaik

Install gstreamer support for opencv python package

406

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2

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no

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2019-01-13 12:14:08 -0600 cudawarped

about the error in 'debayer.cu'

958

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2

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no

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2019-01-16 05:28:33 -0600 IanB

namedwindow not defined

1k

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2

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no

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2020-05-03 17:25:29 -0600 kpachinger

How to increase TOTAL_MEMORY for OpenCV JS?

9k

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2

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no

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2019-01-15 05:11:28 -0600 kbarni

[Ubuntu 18.04] how add opencv built from source to QT applications

opencv4
qt5

6k

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2

answers

1

vote

2019-01-23 04:02:32 -0600 prb

How to calculate the head and body angle with respect to the camera?

466

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2

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no

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2019-02-01 05:26:15 -0600 patrikx3

The docs it says I should include opencv2/core.hpp but it is not there

build

386

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2

answers

-1

votes

2019-01-21 05:53:23 -0600 arti

How to read sequence of .yml file and concatenate in a single yml file in rows

3k

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2

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no

votes

2020-04-27 13:31:22 -0600 ademmler

How to set/get camera properties on Mac OS X

6k

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2

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no

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2019-01-24 21:28:07 -0600 pedro_bb7

not authorized `cv' @ error/constitute.c/WriteImage/1028.

614

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2

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no

votes

2019-01-28 14:47:05 -0600 js4267

read formated matrix from text file

820

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2

answers

no

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2020-04-09 14:29:17 -0600 supra56

I can't draw the contour approximation, I use a green square to take the video but no contour on it.

342

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2

answers

1

vote

2019-02-03 08:00:57 -0600 soleil

Multiple E1083 on opencv-master compilation despite the correctness of path and rights

516

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2

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no

votes

2019-02-21 03:11:04 -0600 Eduardo

BFMatcher performances VS OpenCV version

bfmatcher

6k

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2

answers

no

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2019-02-05 05:24:55 -0600 supra56

Can someone explain the output of forward() in DNN module?

3k

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2

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no

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2019-02-05 18:02:51 -0600 sturkmen

Barcode/label detection

1k

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2

answers

no

votes

2019-02-12 20:26:40 -0600 kebwi

Isn't the calcOpticalFlowFarneback example calculating hue wrong?

7k

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2

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no

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2019-02-14 03:49:34 -0600 Kushal

29,830 questions

How facemarkLBF work?

undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)' with QT5.8

MultiTracker Rois

(u->refcount == 0) in deallocate

How to find the id/index of aruco marker based on its relative position?

imread and Russian language path to img

How can I divide an image into two specific polygons?

OpenCV DisplayImage Example Errors

setMouseCallback multiples rectangles

Is there any way to recognize the camera device using HDMI cable(without USB)?

How to detect peaks on histograms?

Code from the tutorial doesn't work

Install gstreamer support for opencv python package

about the error in 'debayer.cu'

namedwindow not defined

How to increase TOTAL_MEMORY for OpenCV JS?

[Ubuntu 18.04] how add opencv built from source to QT applications

How to calculate the head and body angle with respect to the camera?

The docs it says I should include opencv2/core.hpp but it is not there

How to read sequence of .yml file and concatenate in a single yml file in rows

How to set/get camera properties on Mac OS X

not authorized `cv' @ error/constitute.c/WriteImage/1028.

read formated matrix from text file

I can't draw the contour approximation, I use a green square to take the video but no contour on it.

Multiple E1083 on opencv-master compilation despite the correctness of path and rights

BFMatcher performances VS OpenCV version

Can someone explain the output of forward() in DNN module?

Barcode/label detection

Isn't the calcOpticalFlowFarneback example calculating hue wrong?

cv2.VideoCapture(0).read() return always 'none' value

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