Questions - OpenCV Q&A Forum

277

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1

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

Thread-safety with GpuMat

110

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

Very Beginner question - need directional guidance

693

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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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-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?

124

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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.

532

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

Identifying between left and right hand

hand-detection

465

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

Building opencv.js on MAC fails undefined symbol: __tls_base

192

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

Fisheye --> Undistorted --> Fisheye

python

151

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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

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?

119

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

Does parallel_for_ block until all threads complete?

336

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

GMS-matcher doesn't write to Output-Vector

720

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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?

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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'

305

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2020-10-04 14:42:35 -0600 supra56

Webcam generated image distorted and python stop working

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

VideoWriter not working on MacOS

354

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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 00:00:49 -0600 seva

Stitching pictures from rotating camera

278

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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

398

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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.

1k

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2

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2020-10-03 00:34:42 -0600 Stéphane Charette

what are the video plugins?

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

Mlx90640 no video stream

285

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

np.ones() shape resize using cv.trackbar

922

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

crash in Mat::release()

1k

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2020-09-30 12:40:31 -0600 bluehawk91

How to Align two images?

image-alignment

261

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no

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

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

316

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no

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

model.forward give an error. opencv.js

246

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no

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2020-09-29 08:49:30 -0600 kilwa

how can i draw a contours in specific region

1k

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no

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2020-09-29 06:44:22 -0600 Shassk

12,357 questions

Thread-safety with GpuMat

Very Beginner question - need directional guidance

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

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

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

Identifying between left and right hand

Building opencv.js on MAC fails undefined symbol: __tls_base

Fisheye --> Undistorted --> Fisheye

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

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

Does parallel_for_ block until all threads complete?

GMS-matcher doesn't write to Output-Vector

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

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'

Webcam generated image distorted and python stop working

VideoWriter not working on MacOS

crash in cv::Mat release function

Stitching pictures from rotating camera

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

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 are the video plugins?

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

Mlx90640 no video stream

np.ones() shape resize using cv.trackbar

crash in Mat::release()

How to Align two images?

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

model.forward give an error. opencv.js

how can i draw a contours in specific region

undistort() and remap() give different results

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