Questions - OpenCV Q&A Forum

11

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2020-10-29 02:11:18 -0500 berak

I have an error and I don't know how to solve it. AttributeError: 'NoneType' object has no attribute 'isOpened'. Can someone help?

39

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2020-10-28 12:45:36 -0500 bko

Error compiling project with CMAKE

31

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2020-10-28 08:54:16 -0500 sturkmen

Check image dissimilar areas using SIFT

SIFT

16

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-1

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2020-10-28 02:17:21 -0500 tahereh rasouli

3d The amount of movement of two images

45

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2020-10-28 01:21:03 -0500 Dinir Imameev

Loading Tensorflow model. Error: Unspecified error (More than one input is Const op) in cv::dnn::dnn4_v20200310

38

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2020-10-28 00:47:01 -0500 sturkmen

Creating simple custom librarys using the opencv library

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2

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2020-10-27 23:03:25 -0500 hodu

Use allocated buffer for Mat Data Pointer

35

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2020-10-27 15:10:09 -0500 sturkmen

Saving video from frames in with fourcc codec h264 and h265 with opencv

32

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2020-10-27 09:49:25 -0500 Noob87

using open cv to control relay

37

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1

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2

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2020-10-27 08:48:15 -0500 8rainfog

Opencv_contrib - Surface matching issue

22

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2020-10-27 06:33:17 -0500 flaviu2

Input file is invalid

python

51

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2020-10-27 02:56:33 -0500 berak

i can't install opencv

eror

30

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2

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2020-10-26 20:23:26 -0500 warpstar22

Gstreamer Pipeline to NV12toBGR using GAPI

GAPI

136

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2

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2020-10-26 15:47:52 -0500 kilwa

Algorithm suggestion for texture image matching

26

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2020-10-26 11:15:43 -0500 Rickvanhek

Insanely high cpu usage for simple videocapture (50% cpu usage)

26

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2020-10-26 08:16:34 -0500 Nick7

malloc: can't allocate region at import cv2

13

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2020-10-26 05:55:14 -0500 lroyer-star

Torchscript in opencv

97

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1

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2020-10-25 13:15:04 -0500 Boris Brodski

OpenCV predictions much worse compared to Tensorflow

25

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1

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2020-10-25 12:24:06 -0500 berak

Undefined symbols for architecture x86_64

27

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-1

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2020-10-25 06:01:41 -0500 kotran

opencv on python, laplacian and sobel filter not working at all

deleted

25

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-1

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2020-10-25 03:48:29 -0500 ItsYasirrr

How to remove black stamp from an image

30

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1

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2020-10-24 23:14:31 -0500 Yzich

Error when importing cv2 on Python 3.8

opencv

29

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2020-10-24 12:05:38 -0500 Gerald.Rowe

Windows 10 FFMPEG wrapper build instruction/project

50

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1

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1

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2020-10-23 09:56:05 -0500 st.matkov

Change blobFromImage dimensions order

c++
dnn

16

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2020-10-23 05:39:29 -0500 Mandi

assert failed

python

163

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3

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2020-10-23 04:44:44 -0500 sturkmen

deletion of useless posts

forum

225

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2020-10-23 03:50:34 -0500 kg99

Checking if Point falls inside contours using pointPolygonTest always returns true in nested shapes

27

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-1

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2020-10-23 02:07:56 -0500 Tehseen

How to find the location of a point in an image in millimeters using camera matrix?

24

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no

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2020-10-23 00:36:49 -0500 ABalandra

Depth registration function in CUDA

79

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1

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no

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2020-10-22 23:07:56 -0500 supra56

Unable to detect circles with HOUGH_GRADIENT_ALT (OpenCV 4.4.0.44 Python)

houghcircle

31,327 questions

I have an error and I don't know how to solve it. AttributeError: 'NoneType' object has no attribute 'isOpened'. Can someone help?

Error compiling project with CMAKE

Check image dissimilar areas using SIFT

3d The amount of movement of two images

Loading Tensorflow model. Error: Unspecified error (More than one input is Const op) in cv::dnn::dnn4_v20200310

Creating simple custom librarys using the opencv library

Use allocated buffer for Mat Data Pointer

Saving video from frames in with fourcc codec h264 and h265 with opencv

using open cv to control relay

Opencv_contrib - Surface matching issue

Input file is invalid

i can't install opencv

Gstreamer Pipeline to NV12toBGR using GAPI

Algorithm suggestion for texture image matching

Insanely high cpu usage for simple videocapture (50% cpu usage)

malloc: can't allocate region at import cv2

Torchscript in opencv

OpenCV predictions much worse compared to Tensorflow

Undefined symbols for architecture x86_64

opencv on python, laplacian and sobel filter not working at all

How to remove black stamp from an image

Error when importing cv2 on Python 3.8

Windows 10 FFMPEG wrapper build instruction/project

Change blobFromImage dimensions order

assert failed

deletion of useless posts

Checking if Point falls inside contours using pointPolygonTest always returns true in nested shapes

How to find the location of a point in an image in millimeters using camera matrix?

Depth registration function in CUDA

Unable to detect circles with HOUGH_GRADIENT_ALT (OpenCV 4.4.0.44 Python)

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