Questions - OpenCV Q&A Forum

177

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2017-12-03 19:45:42 -0600 supra56

copy some subimages and put them on other parts of the original images

728

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2018-04-19 03:47:53 -0600 StevenPuttemans

opencv traincascade on windows

273

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2018-06-06 07:03:39 -0600 berak

can't find cv::ppf_match_3d::loadPLYSimple

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2018-07-18 02:03:15 -0600 Billa Surendra

I am Trying to cross compiling OpenCV application statically by using following command

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2018-07-20 01:41:17 -0600 berak

I am trying to executing the OpenCV sample c++ program but i am getting error ''undefined reference to `compress'''.

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2018-07-23 04:19:42 -0600 LBerger

I am trying to executing OpenCV application executable in riscv linux but i am getting error "terminate called after throwing an instance of 'cv::Exception'"

995

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2018-07-25 08:43:01 -0600 sturkmen

point outside image with getPerspectiveTransform

538

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2018-07-27 04:08:29 -0600 berak

I am trying to executing cross compiled c++ program(removeRedEye) in riscv linux,but i am getting errors

792

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2018-08-06 01:19:52 -0600 mshabunin

Trying to cross compiling OpenCV library for RISCV architecture statically but i am getting errors

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2018-08-28 14:54:46 -0600 MikeTronix

I have an image with all pixel values 0 i.e black image, i want to access pixels at certain image coordinates more then a 100 and change the value to 1 how can i do this using opencv python and for loops if possible?

26k

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2018-09-11 05:43:45 -0600 kbarni

hardware for opencv

484

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2018-10-18 22:20:28 -0600 supra56

Can't detect the circle

212

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2018-11-11 15:15:45 -0600 murtaza-078

Error while running slic.cpp code

1k

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2018-11-14 11:38:15 -0600 berak

Compiling 4.0.0.0rc Fails

6k

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2018-12-10 10:35:51 -0600 berak

error in cmake while configuring opencv extra modules path

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2018-12-17 06:37:57 -0600 berak

compare two faces opencv node js

2k

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2019-07-07 00:31:58 -0600 FlorMaye

Problems ChAruCo Camera Calibration

2k

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2019-12-17 07:59:08 -0600 kbarni

How to remove the element attached to the image border?

8k

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2019-12-26 08:21:42 -0600 supra56

Unable to find and draw biggest contour

256

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2020-03-01 06:06:15 -0600 berak

This is a code for recognition of faces and attendance marking. I get the following error

3k

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2020-03-04 14:49:56 -0600 mvuori

Help with "Undefined-reference" when compiling with CMake for OpenCV & C++ program

2k

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2020-09-10 01:13:30 -0600 sturkmen

Replace Color of Components that have specific color and are have transparent pixels as neighbours

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2020-09-14 02:19:42 -0600 berak

Where to find opencv_createsamples.exe in windows

810

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2020-11-18 13:03:14 -0600 Tina J

cv2.error: OpenCV(4.0.0): …(-215:Assertion failed)… ONNXImporter::getLayerParams'

378

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2015-01-03 07:32:43 -0600 Aman Malhotra

What are the problems that changes the fps in video processing? [closed]

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2015-01-14 04:29:39 -0600 h_mahmoodian

how can i read all frames?

3k

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2015-01-16 05:48:07 -0600 h_mahmoodian

how can i measure fps for camera?

c++
copencv

734

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2015-02-21 10:53:24 -0600 venkat.330

Memory leak in the sample code to capture image with Opencv with GLIB [closed]

480

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2015-05-16 11:47:20 -0600 Eduardo

Need Help! Python, Object Detection/Tracking [closed]

154

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2015-06-11 08:12:37 -0600 MisterZylinder

88 questions

copy some subimages and put them on other parts of the original images

opencv traincascade on windows

can't find cv::ppf_match_3d::loadPLYSimple

I am Trying to cross compiling OpenCV application statically by using following command

I am trying to executing the OpenCV sample c++ program but i am getting error ''undefined reference to `compress'''.

I am trying to executing OpenCV application executable in riscv linux but i am getting error "terminate called after throwing an instance of 'cv::Exception'"

point outside image with getPerspectiveTransform

I am trying to executing cross compiled c++ program(removeRedEye) in riscv linux,but i am getting errors

Trying to cross compiling OpenCV library for RISCV architecture statically but i am getting errors

I have an image with all pixel values 0 i.e black image, i want to access pixels at certain image coordinates more then a 100 and change the value to 1 how can i do this using opencv python and for loops if possible?

hardware for opencv

Can't detect the circle

Error while running slic.cpp code

Compiling 4.0.0.0rc Fails

error in cmake while configuring opencv extra modules path

compare two faces opencv node js

Problems ChAruCo Camera Calibration

How to remove the element attached to the image border?

Unable to find and draw biggest contour

This is a code for recognition of faces and attendance marking. I get the following error

Help with "Undefined-reference" when compiling with CMake for OpenCV & C++ program

Replace Color of Components that have specific color and are have transparent pixels as neighbours

Where to find opencv_createsamples.exe in windows

cv2.error: OpenCV(4.0.0): …(-215:Assertion failed)… ONNXImporter::getLayerParams'

What are the problems that changes the fps in video processing? [closed]

how can i read all frames?

how can i measure fps for camera?

Memory leak in the sample code to capture image with Opencv with GLIB [closed]

Need Help! Python, Object Detection/Tracking [closed]

Similar function to python module 'inspect'? [closed]

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