Questions - OpenCV Q&A Forum

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2015-06-07 15:19:08 -0600 stillNovice

cv::perspectiveTransform Assertion failed

340

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1

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2016-04-04 01:34:23 -0600 NathanSn

OpenCV BoW assert error while computing histograms for SVM training

870

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2017-08-07 02:47:13 -0600 yogeshmurthy_

Issues with OpenCV train_HOG c++ sample code? [closed]

534

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2018-03-20 08:46:36 -0600 KlaimNod

Assertion failed at getMemoryShapes in dnn

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1

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2014-04-17 17:06:29 -0600 Nate

Assertion failure with call to cv::calcOpticalFlowPyrLK(...) (ANSWERED)

444

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2014-05-16 06:24:27 -0600 watman

Stitcher calibration Assertion `!err.empty()' failed

127k

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2015-01-05 05:21:18 -0600 FooBar

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

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2015-01-27 10:30:46 -0600 kobe02168

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

assertionerror

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2015-06-18 07:38:01 -0600 stillNovice

solvePnP-RANSAC crashes.

36k

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1

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2015-06-23 15:06:06 -0600 berak

imshow: Assertion failed (size.width>0 && size.height>0) [closed]

577

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2015-09-29 17:14:56 -0600 F1sherKK

OpenCV4Android, Core.minMaxLoc() assertion failed [closed]

2k

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2015-11-11 18:10:18 -0600 Phazoozoo

Confusing SVM training error

3k

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2016-03-29 05:48:31 -0600 Mathieu Barnachon

Pass by reference errors

568

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2016-06-08 20:57:10 -0600 Tetragramm

Yet Another Assertion failed (scn == 3 || scn == 4)

2k

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1

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2016-09-08 05:21:53 -0600 CLeBeR

Assertion error in cvtColor

713

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2017-01-19 10:24:37 -0600 ptemple

ORB assertion failed with OpenCV 3.0.0 [closed]

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2017-02-28 10:28:47 -0600 t24-white

Unknown Opencv Predict error (assertion Failed)

848

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2017-03-31 09:08:22 -0600 berak

OpenCV Error: Assertion failed in matrix.cpp line 522, /matrix.cpp:522: error: (-215)

assertionerror

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2017-04-28 03:51:48 -0600 ChanNy

OpenCV Assertion failed : Build doesn't support current CPU/HW config

assertionerror

359

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2017-05-02 06:53:59 -0600 Mary-Ann

Failed assertion by saliency calculation [closed]

3k

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2017-05-11 02:47:54 -0600 sriram04

Assertion failed (j < nimages) in histPrepareImages, file /home/ibytecode/OpenCV/modules/imgproc/src/histogram.cpp, line 148

2k

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2017-05-18 02:24:48 -0600 djkpA

OpenCV Error: Assertion failed in undistort.cpp at line 293 [closed]

12k

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2017-05-28 08:55:14 -0600 berak

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

2k

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1

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2019-07-21 07:57:25 -0600 supra56

KNearest Java Assertion Error[SOLVED]

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2018-04-26 03:32:39 -0600 berak

Error: Assertion failed (size.width>0 && size.height>0) in imshow

3k

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2018-10-25 05:46:03 -0600 wildwallaby

python cv2 stereoCalibrate [closed]

11k

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2018-12-17 07:06:40 -0600 kgpinco

Webcam works inconsistently [closed]

204

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2019-06-13 23:55:40 -0600 berak

OpenCV error on Training, please help. [closed]

5k

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2019-06-28 07:07:55 -0600 LBerger

OpenCV(4.1.0) Error: Assertion failed (((0x28442211 >> ((traits::Depth<_Tp>::value) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file c:\opencv\build\include\opencv2\core\mat.inl.hpp, line 1145

669

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2019-08-12 13:35:56 -0600 Shiva_2410

35 questions

cv::perspectiveTransform Assertion failed

OpenCV BoW assert error while computing histograms for SVM training

Issues with OpenCV train_HOG c++ sample code? [closed]

Assertion failed at getMemoryShapes in dnn

Assertion failure with call to cv::calcOpticalFlowPyrLK(...) (ANSWERED)

Stitcher calibration Assertion `!err.empty()' failed

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

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

solvePnP-RANSAC crashes.

imshow: Assertion failed (size.width>0 && size.height>0) [closed]

OpenCV4Android, Core.minMaxLoc() assertion failed [closed]

Confusing SVM training error

Pass by reference errors

Yet Another Assertion failed (scn == 3 || scn == 4)

Assertion error in cvtColor

ORB assertion failed with OpenCV 3.0.0 [closed]

Unknown Opencv Predict error (assertion Failed)

OpenCV Error: Assertion failed in matrix.cpp line 522, /matrix.cpp:522: error: (-215)

OpenCV Assertion failed : Build doesn't support current CPU/HW config

Failed assertion by saliency calculation [closed]

Assertion failed (j < nimages) in histPrepareImages, file /home/ibytecode/OpenCV/modules/imgproc/src/histogram.cpp, line 148

OpenCV Error: Assertion failed in undistort.cpp at line 293 [closed]

OpenCV Error: Assertion failed (!empty()) in detectMultiScale

KNearest Java Assertion Error[SOLVED]

Error: Assertion failed (size.width>0 && size.height>0) in imshow

python cv2 stereoCalibrate [closed]

Webcam works inconsistently [closed]

OpenCV error on Training, please help. [closed]

OpenCV(4.1.0) Error: Assertion failed (((0x28442211 >> ((traits::Depth<_Tp>::value) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file c:\opencv\build\include\opencv2\core\mat.inl.hpp, line 1145

I am getting bug while performing open cv based dnn face detection

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