Questions - OpenCV Q&A Forum

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2020-09-30 04:05:24 -0600 koumeravinus

model.forward give an error. opencv.js

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2020-09-30 19:18:00 -0600 Der Luftmensch

crash in Mat::release()

257

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2020-09-30 11:21:37 -0600 csggnn

UI calls in different threads (imshow) how to detect and avoid.

276

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2020-10-01 06:27:35 -0600 berak

np.ones() shape resize using cv.trackbar

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2020-10-02 09:48:20 -0600 firebladed

Mlx90640 no video stream

160

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2020-10-02 10:23:38 -0600 HunterP

Computing distance of identified object with stereoCalibrate() and stereo(), not whole depth map

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2020-10-04 00:00:49 -0600 seva

Stitching pictures from rotating camera

388

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2020-10-03 08:13:01 -0600 candleboy_

I'm having major issues with setting up h/w accelerated video capture on Windows 10. Would appreciate any and all help and advice.

274

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2020-10-03 09:59:44 -0600 firebladed

What type shoukd be used cv::Mat.forEach on 16bit Greyscale (CV_16UC1)

forEach

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2020-10-04 03:17:17 -0600 Dudi

crash in cv::Mat release function

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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?

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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 08:53:59 -0600 mimeluff

Fisheye --> Undistorted --> Fisheye

python

462

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

Building opencv.js on MAC fails undefined symbol: __tls_base

531

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

Identifying between left and right hand

hand-detection

675

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

Very Beginner question - need directional guidance

302

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

Error from cv2.dnn.readNetFromTensorflow Lambda layer

readNetFromTensor

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

ORB Keypoints Minimum distance?

454

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

solvePnP for camera pose - Am I missing a step?

809

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

Building OpenCV without SSE2 and Neon

sse2
neon

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2020-10-10 02:34:20 -0600 kunaltyagi

Compilation error while building from source

compilation-error

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2020-10-11 10:12:38 -0600 opencv_new

Accuracy with SIFT + bag of words

293

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2020-10-12 14:25:17 -0600 KyloEntro

Track black object with optical flow

487

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2020-10-12 14:04:32 -0600 ChannelJuanNews

OpenCV Build JS Fails on MacOS

488

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2020-10-13 01:32:43 -0600 berak

12,357 questions

model.forward give an error. opencv.js

crash in Mat::release()

UI calls in different threads (imshow) how to detect and avoid.

np.ones() shape resize using cv.trackbar

Mlx90640 no video stream

Computing distance of identified object with stereoCalibrate() and stereo(), not whole depth map

Stitching pictures from rotating camera

I'm having major issues with setting up h/w accelerated video capture on Windows 10. Would appreciate any and all help and advice.

What type shoukd be used cv::Mat.forEach on 16bit Greyscale (CV_16UC1)

crash in cv::Mat release function

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?

Fisheye --> Undistorted --> Fisheye

Building opencv.js on MAC fails undefined symbol: __tls_base

Identifying between left and right hand

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

Very Beginner question - need directional guidance

Error from cv2.dnn.readNetFromTensorflow Lambda layer

ORB Keypoints Minimum distance?

solvePnP for camera pose - Am I missing a step?

Building OpenCV without SSE2 and Neon

Compilation error while building from source

Accuracy with SIFT + bag of words

Track black object with optical flow

OpenCV Build JS Fails on MacOS

findChessboardCorners and findCirclesGrid don't work on large image?

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