Questions - OpenCV Q&A Forum

464

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2

answers

no

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

read formated matrix from text file

802

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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.

1k

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2

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no

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2019-04-20 13:40:55 -0600 supra56

Remove white noise between white horizontal line

868

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2

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no

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2019-02-28 08:01:51 -0600 HYPEREGO

How to get the number of pixels in an ROI c++?

c++
opencv

1k

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2

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no

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2019-03-04 00:41:17 -0600 Yashas

which gcc++ compiler is need to run opencv4 code?

14k

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2

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no

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2019-03-13 08:18:04 -0600 berak

HOW TO OPEN RAW IMAGE IN OPENCV

opencv

10k

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2

answers

2

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2019-04-01 00:00:23 -0600 TheBlackViper_Alpha

How to generate/install OpenCV for static linking?

2k

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2

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no

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2019-04-13 09:45:21 -0600 supra56

How to add ffmpeg support to Opencv in Conda enviroment on Linux?

278

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2

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no

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2019-06-11 08:04:36 -0600 Eduardo

Which one is the best book to start learning Opencv?

opencv
book

844

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2

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no

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2019-06-16 10:50:02 -0600 Chris

Compare font from image

opencv

1k

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2

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no

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2020-10-22 00:54:59 -0600 sohamgandhi

Video writer in java not saving

14k

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2

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no

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2020-01-17 01:33:46 -0600 RAHIL

cv2.error: OpenCV(4.1.0) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:627: error: (-2:Unspecified error) The function is not implemented

2k

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2

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2019-07-15 21:53:51 -0600 supra56

Building OpenCV as a static library gives thousands of undefined references[SOLVED]

12k

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2

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no

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2019-08-01 06:00:46 -0600 LBerger

How could do sharpness images?

1k

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2

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no

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2019-08-20 07:02:37 -0600 StevenPuttemans

How to make transparent background While Stitching using homography

opencv

652

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2

answers

no

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2019-09-16 06:05:43 -0600 Harsh1307

OpenCV failure while executing stitching in GPU [closed]

opencv

541

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2

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no

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2019-09-14 00:11:32 -0600 holger

import cv2 error in python

978

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2

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no

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2019-10-23 21:01:41 -0600 supra56

Unable to operate 2 arrays due to Assertion failed (type2 == CV_64F && (sz2.height == 1 || sz 2.height == 4)) in cv::arithm_op

782

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2

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no

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2019-11-06 14:04:15 -0600 supra56

OpenCV does not read Logitech C920 .wmv files

447

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2

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no

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2020-01-29 06:16:00 -0600 cudawarped

Why SURF_CUDA does not bind to python?

10k

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2

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no

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2019-12-03 13:16:16 -0600 supra56

Detect ellipses, ovals in images with OpenCV python[SOLVED]

1k

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2

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no

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2019-12-13 14:45:56 -0600 supra56

Traceback (most recent call last): File "./Documents/S.py", line 36, in <module> roi_gray, NameError: name 'roi_gray' is not defined

2k

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2

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2020-03-12 02:45:00 -0600 KTeddy

OpenCV build for Windows x64/Python3.7 from source. Where is the .pyd file?

15k

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2

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no

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2020-02-10 10:11:00 -0600 Agustin

How to crop rectangles from a image with opencv

1k

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2

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-1

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2020-02-01 21:10:44 -0600 supra56

How to get the number of centroids in a rectangle?[SOLVED]

1k

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2

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no

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2020-03-02 19:10:54 -0600 HYPEREGO

How to use multiprocessing with OpenCV-C++ ?

3k

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2

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no

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2020-04-02 12:21:42 -0600 crackwitz

How to delay programm without stopping video feed in Python3

3k

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2

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no

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2020-04-06 02:48:08 -0600 berak

'NoneType' object is not subscriptable error after read some fames

6k

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2

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no

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2020-05-21 03:27:32 -0600 berak

gcc: error: long: No such file or directory

2k

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2

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no

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2020-05-06 01:07:47 -0600 berak

5,271 questions

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.

Remove white noise between white horizontal line

How to get the number of pixels in an ROI c++?

which gcc++ compiler is need to run opencv4 code?

HOW TO OPEN RAW IMAGE IN OPENCV

How to generate/install OpenCV for static linking?

How to add ffmpeg support to Opencv in Conda enviroment on Linux?

Which one is the best book to start learning Opencv?

Compare font from image

Video writer in java not saving

cv2.error: OpenCV(4.1.0) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:627: error: (-2:Unspecified error) The function is not implemented

Building OpenCV as a static library gives thousands of undefined references[SOLVED]

How could do sharpness images?

How to make transparent background While Stitching using homography

OpenCV failure while executing stitching in GPU [closed]

import cv2 error in python

Unable to operate 2 arrays due to Assertion failed (type2 == CV_64F && (sz2.height == 1 || sz 2.height == 4)) in cv::arithm_op

OpenCV does not read Logitech C920 .wmv files

Why SURF_CUDA does not bind to python?

Detect ellipses, ovals in images with OpenCV python[SOLVED]

Traceback (most recent call last): File "./Documents/S.py", line 36, in <module> roi_gray, NameError: name 'roi_gray' is not defined

OpenCV build for Windows x64/Python3.7 from source. Where is the .pyd file?

How to crop rectangles from a image with opencv

How to get the number of centroids in a rectangle?[SOLVED]

How to use multiprocessing with OpenCV-C++ ?

How to delay programm without stopping video feed in Python3

'NoneType' object is not subscriptable error after read some fames

gcc: error: long: No such file or directory

Create mock OpenCV camera on Python

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