Questions - OpenCV Q&A Forum

7

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-1

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2020-02-29 02:52:39 -0500 LBerger

error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

7

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2020-02-28 21:33:31 -0500 Albert0924

OpenCV with GStreamer in Android Studio

11

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2020-02-28 16:05:04 -0500 PressedTin

How do I make the method onCameraFrame() be called more frequently

64

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2

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2020-02-28 15:40:23 -0500 firebladed

VIDEOIO ERROR: V4L2: Pixel format of incoming image is unsupported by OpenCV

13

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2020-02-28 14:44:41 -0500 ROMEL

from an image having multiple rectangles some rectangles are filled with lines an some are empty like given below in the image.i need to remove all the rectangles which are empty.Any suggestions?

10

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2020-02-28 13:23:23 -0500 raisa_

How do I write into YML format and read it with opencv and C++ ?

16

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-1

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2020-02-28 11:35:19 -0500 jayasingha

3D reconstruction of a scene from 2D images [closed]

3d

19

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2020-02-28 11:28:57 -0500 berak

how could I change memory layout from hwc to chw ?

18

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2020-02-28 07:42:48 -0500 link1375

OpenCV detects most rectangular contours only if they are not aligned with the camera

findContours

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2020-02-28 06:47:58 -0500 ashish.lavaniya

How can we use the android device resolution when capturing or scanning the image using opencv in android platform.

71

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2020-02-28 06:20:58 -0500 Xyre

How to find differences of two images while object has different size and different color map?

13

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2020-02-28 05:12:21 -0500 JerryTager

Version change 4.1.2.30 -> 4.2.0.32

15

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1

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no

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2020-02-28 04:30:30 -0500 cudawarped

Sharpness opencv cuda python

8

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2020-02-28 03:52:08 -0500 RPonomarenko

[BRISK] There is no a possibility to change keypoints size

8

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no

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2020-02-28 01:34:08 -0500 trialzuki

Converting mobilenetv3 from tensorflow zoo to dnn

8

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no

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2020-02-28 00:11:20 -0500 hklee93

Regarding the availability of tracking water projectile motion

127

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2020-02-27 21:20:09 -0500 supra56

no matching function for call to 'drawContours' [closed]

117

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2020-02-27 21:16:49 -0500 supra56

Better way to Drawing contour line

python#opencv

4k

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2

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-1

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2020-02-27 21:12:46 -0500 supra56

Compare video frames

opencv#python

52

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1

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2020-02-27 20:57:24 -0500 supra56

Face recognition video crashing[SOLVED]

Facedetection

9

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2020-02-27 10:39:48 -0500 MightyFunkster

Getting couldn't find package errors for open_cv with ROS

robotmelodic

234

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1

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2020-02-27 10:10:51 -0500 MikeTronix

How to Get Rect from point

opencv
c++

13

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2020-02-27 09:06:05 -0500 PressedTin

How do I get 0-255 RGB values from an RGBA mat?

20

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2

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2020-02-27 07:11:27 -0500 Wolfish

OpenCV and Flutter

Flutter

18

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2020-02-27 06:40:48 -0500 Pavel

There is zero picture coordinate in OpenCV notation.

11

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2020-02-27 05:44:56 -0500 Imran B

detailenhance cuda opencv

15

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2020-02-27 04:35:13 -0500 supra56

Two camera objects in Flask app provides freeze

19

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2020-02-27 03:34:27 -0500 supra56

Problem with grfmt_tiff.cpp

grfmt_tiff.cpp

5

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2020-02-27 03:23:35 -0500 Mathilda Yun

About cv2.dnn.readNetFromONNX

readNetFromONNX

12

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no

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2020-02-27 02:25:57 -0500 ziknehupsu

32,545 questions

error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

OpenCV with GStreamer in Android Studio

How do I make the method onCameraFrame() be called more frequently

VIDEOIO ERROR: V4L2: Pixel format of incoming image is unsupported by OpenCV

from an image having multiple rectangles some rectangles are filled with lines an some are empty like given below in the image.i need to remove all the rectangles which are empty.Any suggestions?

How do I write into YML format and read it with opencv and C++ ?

3D reconstruction of a scene from 2D images [closed]

how could I change memory layout from hwc to chw ?

OpenCV detects most rectangular contours only if they are not aligned with the camera

How can we use the android device resolution when capturing or scanning the image using opencv in android platform.

How to find differences of two images while object has different size and different color map?

Version change 4.1.2.30 -> 4.2.0.32

Sharpness opencv cuda python

[BRISK] There is no a possibility to change keypoints size

Converting mobilenetv3 from tensorflow zoo to dnn

Regarding the availability of tracking water projectile motion

no matching function for call to 'drawContours' [closed]

Better way to Drawing contour line

Compare video frames

Face recognition video crashing[SOLVED]

Getting couldn't find package errors for open_cv with ROS

How to Get Rect from point

How do I get 0-255 RGB values from an RGBA mat?

OpenCV and Flutter

There is zero picture coordinate in OpenCV notation.

detailenhance cuda opencv

Two camera objects in Flask app provides freeze

Problem with grfmt_tiff.cpp

About cv2.dnn.readNetFromONNX

OpenCV Error: Assertion failed (tlsSlots.size() > slotIdx) in releaseSlot

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