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783 questions
Tagged
252
views
no
answers
no
votes
2017-09-27 10:46:14 -0600
berak
videoCapture::open doesn't see default camera
videocapture
12k
views
1
answer
no
votes
2017-10-11 10:35:26 -0600
mfisher
Unable to build opencv 3.3.0 with cuda 9.0 on linux
CUDA
opencv3.3
cmake
install
1k
views
no
answers
no
votes
2017-09-22 09:45:15 -0600
Lubagov
OpenCV 3.3 setNumThreads(0) bug
setNumThreads
cascadeclassifier
opencv
3.3
619
views
no
answers
no
votes
2017-09-22 09:22:41 -0600
Rofreli
Problems with CMAKE and OpenCL
cmake
opencl
rules
opencv
873
views
no
answers
no
votes
2017-09-21 04:47:25 -0600
haoge
Why the cvtColor use a lot of CPU when process UMat in opencl gpu mode
opencl
UMat
CPU
usage
664
views
no
answers
no
votes
2017-09-20 10:46:47 -0600
Major Squirrel
Assertion failed (u->origdata == data) in deallocate, using OpenCL
opencl
gpu
embedded
memory
4k
views
1
answer
no
votes
2017-09-25 20:25:00 -0600
breadbugs
OpenCV 3.2.0 cannnot access to SURF/SIFT in xfeatures2d
opencv_contrib
SIFT
ubuntu16.04
qt
177
views
no
answers
2
votes
2017-09-12 02:17:49 -0600
mihaibujanca
Module directory structure
modules
directory
CUDA
headers
3k
views
2
answers
2
votes
2017-09-06 13:48:28 -0600
matman
Building an executable which uses opencv that can be run on another computer
executable
static_linking
2k
views
no
answers
1
vote
2017-08-29 03:13:54 -0600
kmusoy
Successfully built opencv 3.3.0 but no cv2.so found [closed]
cv2.so
python
opencv3.3.0
386
views
no
answers
no
votes
2017-08-23 06:41:56 -0600
antithing
Unknown crash in ocl.cpp
crash
error
ocl
opencl
1k
views
no
answers
no
votes
2017-08-21 08:39:52 -0600
berak
descriptorMatcher (BruteForce-Hamming) with OpenCL
opencl
345
views
1
answer
no
votes
2020-08-24 22:36:12 -0600
sjhalayka
OpenCL Support for QUALCOMM GPU
Opencv#opencl
280
views
no
answers
no
votes
2017-08-12 22:59:19 -0600
Uma
/ libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x4
android#opencv
530
views
no
answers
no
votes
2017-08-12 22:53:46 -0600
Uma
clGetPlatformIds is failed for Mobile GPU (Adreno 405)
android#opencv
690
views
1
answer
2
votes
2017-08-10 06:36:27 -0600
Kostas
cv::solve OpenCV 3.1 vs. 3.2 speed
performance
1k
views
no
answers
no
votes
2017-08-03 04:32:14 -0600
Raki
Matplotlib to replace imshow()
matplotlib
opencv
python3
1k
views
1
answer
no
votes
2017-07-31 08:48:36 -0600
bthomas
OpenCV 3.2.0 : Unable to open and read a video
videofile
561
views
no
answers
no
votes
2017-07-25 09:42:48 -0600
berak
Building OpenCV Visual Studio 14 2015 Unicode Errors
visual-studio-2015
build
unicode
601
views
no
answers
no
votes
2017-07-23 22:54:20 -0600
reid
DMA directly into UMat data
UMat
gpu
DMA
150
views
no
answers
-1
votes
2017-07-17 09:12:39 -0600
dab
Before openning the image using OpenCV, I'm trying to create a region groing algorithm using OpenCL. The problem is to find how i can fix the starting point pixel (germ) in this image and transform these steps in OpenCL. Thanks in advance
algorithmopencl
1k
views
1
answer
no
votes
2017-07-19 02:52:05 -0600
Uma
ALL_BUILD error when building OpenCV from source
ALL_BUILD
THDiskFile
cmake-gui
error
LNK1104
7k
views
1
answer
no
votes
2017-07-04 00:40:04 -0600
berak
How does VideoCapture from USB Webcam on Windows using DirectShow and MJPG work?
mjpg
mjpeg
webcam
videocapture
directshow
374
views
no
answers
no
votes
2017-07-03 05:52:41 -0600
PeterSupan
Use OpenCL CPU Backend for custom kernel (Opencv 3.2)
opencl
custom
kernel
CPU
backend
2k
views
no
answers
no
votes
2017-07-03 04:50:14 -0600
doudou2017
How to solve CMake Warning at cmake/OpenCVPackaging.cmake:23 (message): CPACK_PACKAGE_VERSION does not match version provided by version.hpp header! [closed]
opencv
718
views
1
answer
no
votes
2017-06-29 20:03:36 -0600
Tetragramm
Place data of Mat at a specific memoryarea pointed to by a pointer
opencl
pointer
CvMat
338
views
no
answers
no
votes
2017-06-29 02:59:46 -0600
berak
region growing with opencl
opencl
1k
views
no
answers
no
votes
2017-06-28 03:26:50 -0600
scobbing
Error with cuda::VideoWriter
CUDA
CreateVideoWriter
844
views
no
answers
no
votes
2017-06-22 12:34:24 -0600
danieltak
Error 'Exception thrown: write access violation' with sample objectDetection.cpp [closed]
build_failure
objectDetection.cpp
types.hpp
367
views
1
answer
no
votes
2017-06-18 01:49:55 -0600
berak
'm trying to implement an image processing algorithm using OpenCL,for that i I read one image using OpenCV. The problem is how transform the data into OpenCL
opencv
opencl
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