Questions - OpenCV Q&A Forum

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2020-10-04 11:34:02 -0600 supra56

python: How to Crop White region from Number Plate image??

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2020-10-04 08:27:29 -0600 ilouzl

VideoWriter not working on MacOS

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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'

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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?

335

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

GMS-matcher doesn't write to Output-Vector

116

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

Does parallel_for_ block until all threads complete?

435

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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?

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

Polynomial

image-warping

150

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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

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

Fisheye --> Undistorted --> Fisheye

python

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

Building opencv.js on MAC fails undefined symbol: __tls_base

528

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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]

121

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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.

668

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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

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

Very Beginner question - need directional guidance

275

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1

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

Thread-safety with GpuMat

546

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1

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no

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2020-10-11 15:15:49 -0600 crackwitz

Cannot Figure Out How To Run OpenCV

383

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

Cannot convert image types using the C++ API

301

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

Error from cv2.dnn.readNetFromTensorflow Lambda layer

readNetFromTensor

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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?

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

extract text from Driving Licence

python#opencv

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

ORB Keypoints Minimum distance?

433

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1

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2020-10-13 03:55:28 -0600 banderlog

What the difference between `CV_VERSION_STATUS` values?

openvino

317

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1

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no

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2020-10-12 02:52:44 -0600 banderlog

-DINF_ENGINE_RELEASE decypher

453

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

solvePnP for camera pose - Am I missing a step?

409

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2

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2020-10-09 13:51:57 -0600 supra56

Calculating motion of Spacecraft/Camera

2k

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no

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2

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2020-10-09 14:59:49 -0600 sturkmen

Drawing several circles in an additive way

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

808

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no

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no

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2020-10-09 19:45:27 -0600 Jeremy Intan

Building OpenCV without SSE2 and Neon

sse2
neon

29,830 questions

python: How to Crop White region from Number Plate image??

VideoWriter not working on MacOS

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'

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

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?

Polynomial

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

Fisheye --> Undistorted --> Fisheye

Building opencv.js on MAC fails undefined symbol: __tls_base

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.

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

Very Beginner question - need directional guidance

Thread-safety with GpuMat

Cannot Figure Out How To Run OpenCV

Cannot convert image types using the C++ API

Error from cv2.dnn.readNetFromTensorflow Lambda layer

Can you read this image by using imRead function?

extract text from Driving Licence

ORB Keypoints Minimum distance?

What the difference between `CV_VERSION_STATUS` values?

-DINF_ENGINE_RELEASE decypher

solvePnP for camera pose - Am I missing a step?

Calculating motion of Spacecraft/Camera

Drawing several circles in an additive way

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

Building OpenCV without SSE2 and Neon

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