TechQA.

Opencv-contrib installation error: file not found

421 views Asked by Artem Lebedev At 01 November 2021 at 20:06

OpenCV(4.5.2) /tmp/pip-req-build-sl2aelck/opencv/modules/imgproc/src/color.cpp:182: error:(-215:Assertion failed) !_src.empty() in function 'cvtColor'

858 views Asked by Imdadul Haque At 08 October 2021 at 09:24

How do I build OpenCV Contrib modules?

2k views Asked by Harry Boy At 04 October 2021 at 22:56

C++, OpenCv at c++ gives error though it is build right

407 views Asked by makala At 12 July 2021 at 11:06

Unable to install opencv-contrib-python deprecation Python 3.5

586 views Asked by KevinUK At 13 June 2021 at 14:00

"AttributeError: module 'cv2.cv2' has no attribute 'dnn_DetectionModel"

1k views Asked by Nathanael Flaugher At 18 April 2021 at 14:36

OpenCV contrib on windows c++ (not all stuff included)

1.2k views Asked by Jan Retych At 07 March 2021 at 14:20

OpenCv for c++ on ubuntu is not getting installed

112 views Asked by Blockchain Kid At 20 January 2021 at 02:03

Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags - both are detected

1.4k views Asked by kyle At 21 December 2020 at 10:34

How to make the opencv-contrib module work?

414 views Asked by SilverA At 05 December 2020 at 13:19

How to add and use new build of OpenCV that includes OpenCV-Contrib in IDE (PyCharm)?

97 views Asked by catalin20 At 20 November 2020 at 21:51

Cannot find reference 'ximgproc' in 'init.py

425 views Asked by Bro K At 28 October 2020 at 09:47

Cannot create FisherFaceRecognizer with OpenCV 4 (C++)

438 views Asked by Totemi1324 At 23 September 2020 at 16:29

Why does cv.aruco.Board_create force CV32F datatype?

171 views Asked by Jux At 30 July 2020 at 10:00

cv2.namedWindow and imshow is not working properly

1.7k views Asked by Muhammad Haseeb Khan At 14 July 2020 at 02:17

Importing OpenCv on pythonanywhere after cmake installation

187 views Asked by Aleningi At 26 June 2020 at 10:38

building opencv with sfm module issues

1.9k views Asked by Richard At 14 June 2020 at 14:44

Problems building openCV with contrib using CMake in windows for visual studio 2019

500 views Asked by Richard At 09 June 2020 at 11:52

ERROR: No matching distribution found for opencv-contrib-python-nonfree

1.4k views Asked by Time At 28 May 2020 at 18:10

namespace SIFT error in making opencv and opencv_contrib 4.3.0 (under ubuntu)

744 views Asked by 暗影老王 At 25 May 2020 at 15:40