Questions - OpenCV Q&A Forum

15k

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1

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no

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2020-10-04 15:09:39 -0600 supra56

Help geeting OpenCV to output a videostream using gstreamer. [closed]

4k

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1

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2020-10-04 18:58:48 -0600 VoteCoffee

Drawmatches throws error when trying to use only good matches

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no

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2020-10-04 21:16:06 -0600 Deauther_2560

f= cv2.dnn.readNet(prototxtPath, weightsPath) cv2.error: OpenCV(4.4.0) C:\caffe\caffe_io.cpp:1121: error: (-2:Unspecified error) FAILED: fs.is_open(). Can't open "\deploy.prototxt" in function 'cv::dnn::ReadProtoFromTextFile'

459

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1

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2020-10-05 00:57:21 -0600 Wex

Cannot apply tensorflow model

718

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2020-10-05 03:26:29 -0600 Jiftoo

What would be the best approach to detect walls or corridors in this game?

725

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no

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2020-10-05 09:33:02 -0600 tim-hilt

Is multithreading handled differently in Python and C++?

336

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2020-10-05 09:49:04 -0600 tim-hilt

GMS-matcher doesn't write to Output-Vector

119

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2020-10-05 14:36:50 -0600 yurky

Does parallel_for_ block until all threads complete?

457

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2020-10-06 03:44:55 -0600 aiubian

SOLVEPNP_ITERATIVE vs SOLVEPNP_EPNP vs SOLVEPNP_P3P vs solvePnPRansac - Which to use and when to use?

151

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no

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-1

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2020-10-06 08:51:57 -0600 Sue

How can I get just one rgb value in a video from ROI's center

python

192

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no

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2020-10-06 08:53:59 -0600 mimeluff

Fisheye --> Undistorted --> Fisheye

python

1k

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1

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no

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2020-10-06 09:34:57 -0600 berak

Polynomial

image-warping

465

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2020-10-06 10:22:41 -0600 berak

Building opencv.js on MAC fails undefined symbol: __tls_base

1k

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2020-10-06 12:00:24 -0600 sjhalayka

OpenCV - OpenGL - OpenCL Interop

532

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2020-10-06 17:32:02 -0600 warpstar22

Identifying between left and right hand

hand-detection

9k

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2

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1

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2020-10-06 22:05:33 -0600 ajpaezm

Delete OpenCV installation in Ubuntu. [closed]

124

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no

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1

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2020-10-07 04:29:49 -0600 Sloanc

Can I use Opencv to process output from a linear photodiode array array.

1k

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no

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-2

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2020-10-07 07:10:32 -0600 supra56

How to show the offset difference value between base image and reference image in OpenCV?

693

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no

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2020-10-07 07:18:55 -0600 v.suri

image.channels() not counting correctly for 2 channel tif images.

c++
opencv

110

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no

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no

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2020-10-07 08:24:30 -0600 salasidis

Very Beginner question - need directional guidance

276

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1

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2020-10-07 11:24:44 -0600 dvfreese

Thread-safety with GpuMat

844

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2

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no

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2020-10-07 14:36:18 -0600 superfly

how do I add missing module cv::drawFrameAxes without breaking installation

390

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2020-10-07 15:11:30 -0600 BullyWiiPlaza

Cannot convert image types using the C++ API

307

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2020-10-07 16:43:32 -0600 alecda

Error from cv2.dnn.readNetFromTensorflow Lambda layer

readNetFromTensor

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no

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2020-10-08 03:15:34 -0600 Steven.Dragoz

ORB Keypoints Minimum distance?

202

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1

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2020-10-08 07:01:42 -0600 supra56

Can you read this image by using imRead function?

2k

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1

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1

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2020-10-08 07:17:33 -0600 supra56

extract text from Driving Licence

python#opencv

469

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no

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no

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2020-10-08 15:16:24 -0600 idan

solvePnP for camera pose - Am I missing a step?

2k

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1

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no

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2020-10-09 02:45:32 -0600 RashidLadj

OpenCV solvePnPRansac() function

7k

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1

answer

1

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2020-10-09 04:21:17 -0600 sturkmen

(-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

cv2.videocapture

29,830 questions

Help geeting OpenCV to output a videostream using gstreamer. [closed]

Drawmatches throws error when trying to use only good matches

f= cv2.dnn.readNet(prototxtPath, weightsPath) cv2.error: OpenCV(4.4.0) C:\caffe\caffe_io.cpp:1121: error: (-2:Unspecified error) FAILED: fs.is_open(). Can't open "\deploy.prototxt" in function 'cv::dnn::ReadProtoFromTextFile'

Cannot apply tensorflow model

What would be the best approach to detect walls or corridors in this game?

Is multithreading handled differently in Python and C++?

GMS-matcher doesn't write to Output-Vector

Does parallel_for_ block until all threads complete?

SOLVEPNP_ITERATIVE vs SOLVEPNP_EPNP vs SOLVEPNP_P3P vs solvePnPRansac - Which to use and when to use?

How can I get just one rgb value in a video from ROI's center

Fisheye --> Undistorted --> Fisheye

Polynomial

Building opencv.js on MAC fails undefined symbol: __tls_base

OpenCV - OpenGL - OpenCL Interop

Identifying between left and right hand

Delete OpenCV installation in Ubuntu. [closed]

Can I use Opencv to process output from a linear photodiode array array.

How to show the offset difference value between base image and reference image in OpenCV?

image.channels() not counting correctly for 2 channel tif images.

Very Beginner question - need directional guidance

Thread-safety with GpuMat

how do I add missing module cv::drawFrameAxes without breaking installation

Cannot convert image types using the C++ API

Error from cv2.dnn.readNetFromTensorflow Lambda layer

ORB Keypoints Minimum distance?

Can you read this image by using imRead function?

extract text from Driving Licence

solvePnP for camera pose - Am I missing a step?

OpenCV solvePnPRansac() function

(-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

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