Questions - OpenCV Q&A Forum

150

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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 03:44:55 -0600 aiubian

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

116

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

Does parallel_for_ block until all threads complete?

335

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

GMS-matcher doesn't write to Output-Vector

721

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1

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

Is multithreading handled differently in Python and C++?

689

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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?

452

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

Cannot apply tensorflow model

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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'

4k

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

Drawmatches throws error when trying to use only good matches

15k

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

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

304

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

Webcam generated image distorted and python stop working

957

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2020-10-04 12:33:06 -0600 kpachinger

Error 6586736 in opencv.js

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

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

2k

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

VideoWriter not working on MacOS

881

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2020-10-04 08:19:05 -0600 sturkmen

OpenCV crop function fatal signal 11

351

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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

358

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2020-10-03 16:09:12 -0600 supra56

I have the below input images. How do I straighten the text written in the images, to get the text in the expected output as shown in the below image ?

straighten

1k

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2020-10-03 12:29:02 -0600 HunterP

Error when running example code

opencv#python#video

188

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2020-10-03 12:02:37 -0600 firebladed

potential loss of information in processing 16bit YUV greyscale [closed]

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

384

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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?

3k

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2020-10-02 20:04:26 -0600 sturkmen

Measuring the diameter of circles

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

925

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

Mlx90640 no video stream

5k

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2020-10-02 04:10:49 -0600 berak

Image frame saving from Video without losing resolution and quality

2k

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2

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2020-10-01 09:05:48 -0600 berak

stitching 2 images together in CUDA like hconcat?

276

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

np.ones() shape resize using cv.trackbar

894

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

29,830 questions

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

Is multithreading handled differently in Python and C++?

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

Cannot apply tensorflow model

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'

Drawmatches throws error when trying to use only good matches

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

Webcam generated image distorted and python stop working

Error 6586736 in opencv.js

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

VideoWriter not working on MacOS

OpenCV crop function fatal signal 11

crash in cv::Mat release function

Stitching pictures from rotating camera

I have the below input images. How do I straighten the text written in the images, to get the text in the expected output as shown in the below image ?

Error when running example code

potential loss of information in processing 16bit YUV greyscale [closed]

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?

Measuring the diameter of circles

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

Mlx90640 no video stream

Image frame saving from Video without losing resolution and quality

stitching 2 images together in CUDA like hconcat?

np.ones() shape resize using cv.trackbar

crash in Mat::release()

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