Questions - OpenCV Q&A Forum

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2020-01-09 10:22:36 -0600 aironman

Error when I try to run Hello World OpenCV sample using java and eclipse

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2017-04-11 11:52:55 -0600 jsmao

OpenCV Error: Assertion failed ((scn == 3 || scn == 4) && (depth == CV_8U || depth == CV_32F)) in cvtColor

3.0.0

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1

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2018-04-17 08:08:34 -0600 qdboy

Using Sobel edge detection algorithm to detect color images and how to generate output images.

sobel

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2018-04-25 13:24:33 -0600 kkalwa

Scoring hits in a shooting target

385

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2017-06-20 06:14:48 -0600 martisan

Slow performance on iOS with video stabilization

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2019-03-27 02:33:19 -0600 jblumenkamp

Converting from RGB => YUV => YUYV => RGB results in different image

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2015-05-15 04:01:01 -0600 eruru

Extracting features with opencv for image classification

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2016-03-20 15:39:02 -0600 sajjad_sss

First run (0x000007b) Error

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2014-03-16 14:42:03 -0600 Rolo

Logo Text Detection Accuracy

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2018-01-17 07:14:47 -0600 Rutherford_27

Python Camera Calibration

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2016-12-28 09:50:18 -0600 hyder

openmp with sections directive

257

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1

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2015-04-01 14:55:39 -0600 tjohnsen

Machine Learning, After training, how exactly does it get a prediction?

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2019-10-08 10:19:31 -0600 sjwastronomer

capturing a y800 avi

y800
avi

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2016-06-15 17:08:46 -0600 mcgrawjt

getDaimlerPeopleDetector vs. getPeopleDetector48x96 vs. custom SVM

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2016-03-11 08:36:50 -0600 nadia

how can i choose the thresholds of canny function in opencv to get clears contours because i have picture with a lot of details

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2014-07-24 02:59:19 -0600 Shiloh

How I can create samples using opencv 2.4.9 using command prompt, there's only opencv_createsamples.exe for visual studio?

traincascade

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2019-05-27 06:19:37 -0600 Anjali Singhal

I am trying to compare Modal posture to my posture

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1

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2013-12-30 09:35:01 -0600 patrykw91

Image skeletonization - connecting lines

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2015-10-01 09:41:43 -0600 paws

perspective transformation with given camera pose

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2019-07-25 21:00:23 -0600 rkandury

findContours function in C++ not giving same number as Python

FindContour

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2015-01-22 02:48:59 -0600 Whysùerhill

How to use opencv_perf_features2d

526

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2020-06-08 13:51:47 -0600 estak

IP Camera RTSP Empty Frame Error

316

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2017-05-01 07:13:17 -0600 vidushig2

What should be default value of features for classification stored in csv file using svm classifciation

285

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2016-11-28 12:24:45 -0600 Katie

Counting strips

python

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2015-11-01 16:22:57 -0600 danielsimig

y800 VideoCapture issue

92

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2015-11-20 14:07:34 -0600 dev9004

opencv3.0 + openni 2.2 +visual studio 12

316

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2014-12-01 01:07:26 -0600 noobproof

What is stored in descriptor.yml file

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2018-05-30 01:31:22 -0600 ya_ocv_user

Neural net that does Hough transform.

295

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2019-04-10 10:06:19 -0600 Maxim Roshior

error: (-215:Assertion failed) (int)_numAxes == inp0.dims in function 'cv::dnn::PermuteLayerImpl::finalize'

131

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2017-05-26 04:05:52 -0600 Chaton

With structured_light::SinusoidalPattern, how do we calibrate?

StructuredLight

12,357 questions

Error when I try to run Hello World OpenCV sample using java and eclipse

OpenCV Error: Assertion failed ((scn == 3 || scn == 4) && (depth == CV_8U || depth == CV_32F)) in cvtColor

Using Sobel edge detection algorithm to detect color images and how to generate output images.

Scoring hits in a shooting target

Slow performance on iOS with video stabilization

Converting from RGB => YUV => YUYV => RGB results in different image

Extracting features with opencv for image classification

First run (0x000007b) Error

Logo Text Detection Accuracy

Python Camera Calibration

openmp with sections directive

Machine Learning, After training, how exactly does it get a prediction?

capturing a y800 avi

getDaimlerPeopleDetector vs. getPeopleDetector48x96 vs. custom SVM

how can i choose the thresholds of canny function in opencv to get clears contours because i have picture with a lot of details

How I can create samples using opencv 2.4.9 using command prompt, there's only opencv_createsamples.exe for visual studio?

I am trying to compare Modal posture to my posture

Image skeletonization - connecting lines

perspective transformation with given camera pose

findContours function in C++ not giving same number as Python

How to use opencv_perf_features2d

IP Camera RTSP Empty Frame Error

What should be default value of features for classification stored in csv file using svm classifciation

Counting strips

y800 VideoCapture issue

opencv3.0 + openni 2.2 +visual studio 12

What is stored in descriptor.yml file

Neural net that does Hough transform.

error: (-215:Assertion failed) (int)_numAxes == inp0.dims in function 'cv::dnn::PermuteLayerImpl::finalize'

With structured_light::SinusoidalPattern, how do we calibrate?

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