Questions - OpenCV Q&A Forum

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no

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2020-10-23 02:07:56 -0600 Tehseen

How to find the location of a point in an image in millimeters using camera matrix?

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2020-10-25 03:48:29 -0600 ItsYasirrr

How to remove black stamp from an image

216

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2020-10-28 02:17:21 -0600 tahereh rasouli

3d The amount of movement of two images

267

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2020-11-05 04:50:10 -0600 berak

Does OpenCV support react js?

reactjs

570

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1

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2020-11-12 07:21:58 -0600 crackwitz

Laser pointer in C++

c++

649

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2020-11-10 15:33:17 -0600 supra56

OpenCV Video Capture nonfunctional as class member (C++)

190

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2020-11-11 11:37:22 -0600 SA_2020

ai that analyses live video footage and can calculates the distance between 2 or more people

analysis

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2020-11-16 12:19:57 -0600 Zapero

cv2.error: OpenCV(4.5.0-dev) /home/pi/opencv/modules/highgui/src/window.cpp:651: error: (-2:Unspecified error) [closed]

cv2

400

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2020-11-19 12:50:56 -0600 Handa

Creating a region of interest in java

5k

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1

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2020-11-21 09:49:33 -0600 berak

Hello, I am working on the image face recognition project. I am getting error as follows. Please guide.

assertion_failed

359

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2020-11-25 15:49:52 -0600 serge

How to know the exact location of an object in an image after detecting it using haar-cascade?

644

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2020-11-27 01:22:28 -0600 Gur

How to detect lens flare /glare in images

744

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2020-12-01 21:13:26 -0600 lilyily

Converting image to grayscale

364

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1

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2020-12-02 08:54:07 -0600 berak

Finding center of contour in a game

findContours

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2020-12-08 03:23:09 -0600 revathi

I am creating web application for face recognition using python flask app. I am already create static dataset. I need the text box to enter the name of the person after that capture image and it will store in to the dataset. [closed]

off-topic

4k

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2

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2012-06-27 11:03:16 -0600 zx9r

Fish detection. Is haartraining a good approach ?

1k

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2012-07-02 11:57:50 -0600 Andrey Pavlenko

GpuMat submatrix out of GpuMat object?

4k

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2012-07-04 08:53:46 -0600 Andrey Kamaev

shadow removal in image

2k

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1

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no

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2012-07-07 12:11:08 -0600 icedecker

cv::Mat Error(mat.hpp)

mat.hpp

1k

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2

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no

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2012-07-18 16:20:12 -0600 allissaid

Problems with class cv::FaceRecognizer under Windows 7 64 bit and VS2010

3k

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2012-07-08 17:21:08 -0600 Rui Marques

Which values for window size and number of pyramids are reasonable for calcOpticalFlowPyrLK?

3k

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no

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2012-07-16 15:38:53 -0600 blue

Assertion Error in Kalman Filter python OpenCV 2.4.0

3k

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1

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2016-07-04 06:23:28 -0600 amir_pro

Can't compile .cu file when including opencv.hpp

CUDA
opencv

940

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1

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no

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2012-07-11 13:51:40 -0600 AlexanderShishkov

Compiling OpenCV for iOS - no product type error

9k

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1

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2012-08-14 03:30:52 -0600 powlee

VideoCapture is not working in OpenCV 2.4.2

2k

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2

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2012-07-12 16:49:17 -0600 blue

videofacerec.py example help

2k

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1

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2012-07-12 11:03:32 -0600 Vincent Rabaud

compile error in opencv2/flann/lsh_table.h when compiling bgslibrary

464

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1

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no

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2012-07-24 03:08:50 -0600 Jay Zhang

How to free the memory when I use the face detector?

1k

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1

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2012-07-13 10:01:17 -0600 XCoder

How to write Keypoints into document of txt

3k

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1

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no

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2012-07-16 08:38:59 -0600 Tommy

29,830 questions

How to find the location of a point in an image in millimeters using camera matrix?

How to remove black stamp from an image

3d The amount of movement of two images

Does OpenCV support react js?

Laser pointer in C++

OpenCV Video Capture nonfunctional as class member (C++)

ai that analyses live video footage and can calculates the distance between 2 or more people

cv2.error: OpenCV(4.5.0-dev) /home/pi/opencv/modules/highgui/src/window.cpp:651: error: (-2:Unspecified error) [closed]

Creating a region of interest in java

Hello, I am working on the image face recognition project. I am getting error as follows. Please guide.

How to know the exact location of an object in an image after detecting it using haar-cascade?

How to detect lens flare /glare in images

Converting image to grayscale

Finding center of contour in a game

I am creating web application for face recognition using python flask app. I am already create static dataset. I need the text box to enter the name of the person after that capture image and it will store in to the dataset. [closed]

Fish detection. Is haartraining a good approach ?

GpuMat submatrix out of GpuMat object?

shadow removal in image

cv::Mat Error(mat.hpp)

Problems with class cv::FaceRecognizer under Windows 7 64 bit and VS2010

Which values for window size and number of pyramids are reasonable for calcOpticalFlowPyrLK?

Assertion Error in Kalman Filter python OpenCV 2.4.0

Can't compile .cu file when including opencv.hpp

Compiling OpenCV for iOS - no product type error

VideoCapture is not working in OpenCV 2.4.2

videofacerec.py example help

compile error in opencv2/flann/lsh_table.h when compiling bgslibrary

How to free the memory when I use the face detector?

How to write Keypoints into document of txt

Python correctMatches

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