Questions - OpenCV Q&A Forum

730

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2020-08-05 11:54:47 -0600 2ros0

python cv2 calls from c++

python

600

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no

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no

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2020-08-05 12:47:18 -0600 andrepc

Error loading OpenCV4 libraries after cross compiling: No such file or directory

481

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1

answer

no

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2020-08-05 21:59:05 -0600 supra56

I’m using raspberry pi with python3. I don’t have the raspo camera. So how would make the videocapture(0) go to a web page? I have seen very complicated ways that I don’t understand yet. Are there basic ways to do this?

737

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2020-08-05 22:14:11 -0600 supra56

cv2.error: assertion failed imshow [closed]

2k

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1

answer

1

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2020-08-05 22:47:39 -0600 supra56

c++ imread filepath in windows

3k

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no

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-1

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2020-08-05 22:53:20 -0600 supra56

Capture Video from Camera using cv2.VideoCapture(0) not working

cv2VideoCapture

489

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2020-08-05 23:03:35 -0600 supra56

Is it possible to use tee in gstreamer pipeline inside VideoCapture() API?

1#opencv#c++

5k

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2020-08-05 23:24:32 -0600 supra56

global /io/opencv/modules/videoio/src/cap_v4l.cpp (880) open VIDEOIO(V4L2): can't find camera device

318

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no

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no

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2020-08-06 04:45:55 -0600 gino0717

WINDOW_NORMAL worked weird after uncheck WITH_QT

429

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2020-08-06 12:03:29 -0600 ronnyvdb

Track Edges and get Camera Transformation [closed]

238

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1

answer

no

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2020-08-06 15:09:32 -0600 mvuori

createVideoReader > 4096 px

283

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1

answer

1

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2020-08-07 01:10:23 -0600 berak

Extract secondary video streams

video-processing

1k

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no

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2020-08-07 02:35:14 -0600 bgengine

compare two pictures of color

2k

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1

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no

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2020-08-07 11:46:18 -0600 Ajay

How to develop a model to detect a point crossed a line?

690

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2020-08-07 12:22:17 -0600 supra56

How do you identify if the image is cut at the edges using OpenCV?

pythonopencv

81

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no

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2020-08-08 12:30:18 -0600 Tanjuro

which is better for opencv ,C++ or java to doing image processing in android studio

c++#opencv#select

1k

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no

answers

1

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2020-08-08 19:02:01 -0600 PKGosal

error importing cv2 in python3.6 but it works for python2.7

opencvpython

480

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no

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2020-08-08 19:31:47 -0600 falalala

Why does OpenCV VideoCapture using a URL not work on Heroku?

337

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1

answer

no

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2020-08-09 02:02:15 -0600 berak

detect specific point in an image

182

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no

answers

1

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2020-08-09 07:07:34 -0600 raheelkan

FrameLink Video Capture in OpenCV

217

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2020-08-09 20:42:24 -0600 supra56

Cv2.DecomposeHomographyMat throws OpenCVException [closed]

448

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2020-08-10 05:26:13 -0600 pedrolula06

LNK1104 cannot open file 'opencv_world440.obj'

opencv#c++#visual

138

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1

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no

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2020-08-10 14:29:00 -0600 berak

C#/.NET interface for OpenCV?

c#
Interface

604

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no

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2020-08-10 18:11:35 -0600 FarshadM

Defect detection in objects

2k

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2020-08-11 00:18:04 -0600 [email protected]

opencvsharp4 BitmapConverter Bitmap cannot be changed. [closed]

BitmapConverter

509

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no

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2020-08-11 01:25:51 -0600 berak

Segmentation fault: 11 after matrix multiplication

c++

534

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1

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no

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2020-08-11 02:03:40 -0600 berak

Using pictures as input to ML module?

940

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no

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2020-08-11 03:42:25 -0600 PRaBH_iOS

Converting cv::Mat to byte array [] in objective-c++

9k

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1

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no

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2020-08-11 05:34:01 -0600 berak

how to make openCV use GPU on google colab

1k

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1

answer

1

vote

2020-08-11 10:08:18 -0600 berak

Scale-adaptive object tracking

object-tracking

29,830 questions

python cv2 calls from c++

Error loading OpenCV4 libraries after cross compiling: No such file or directory

I’m using raspberry pi with python3. I don’t have the raspo camera. So how would make the videocapture(0) go to a web page? I have seen very complicated ways that I don’t understand yet. Are there basic ways to do this?

cv2.error: assertion failed imshow [closed]

c++ imread filepath in windows

Capture Video from Camera using cv2.VideoCapture(0) not working

Is it possible to use tee in gstreamer pipeline inside VideoCapture() API?

global /io/opencv/modules/videoio/src/cap_v4l.cpp (880) open VIDEOIO(V4L2): can't find camera device

WINDOW_NORMAL worked weird after uncheck WITH_QT

Track Edges and get Camera Transformation [closed]

createVideoReader > 4096 px

Extract secondary video streams

compare two pictures of color

How to develop a model to detect a point crossed a line?

How do you identify if the image is cut at the edges using OpenCV?

which is better for opencv ,C++ or java to doing image processing in android studio

error importing cv2 in python3.6 but it works for python2.7

Why does OpenCV VideoCapture using a URL not work on Heroku?

detect specific point in an image

FrameLink Video Capture in OpenCV

Cv2.DecomposeHomographyMat throws OpenCVException [closed]

LNK1104 cannot open file 'opencv_world440.obj'

C#/.NET interface for OpenCV?

Defect detection in objects

opencvsharp4 BitmapConverter Bitmap cannot be changed. [closed]

Segmentation fault: 11 after matrix multiplication

Using pictures as input to ML module?

Converting cv::Mat to byte array [] in objective-c++

how to make openCV use GPU on google colab

Scale-adaptive object tracking

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