Questions - OpenCV Q&A Forum

256

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2020-04-07 04:44:43 -0600 gaby

SIGSEGV in libopencv_core.4.1.dylib called from java, works on one machine but not another [closed]

149

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-1

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2020-04-05 13:25:52 -0600 lencls

How can i make matchtemplate with threshold (java maeven)

419

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-1

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2020-03-28 10:44:17 -0600 katabolerTeufel

OpenCV 4.2 build with contrib modules java

2k

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1

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no

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2020-03-28 05:49:53 -0600 otoker

Displaying UDP Multicast Stream

1k

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1

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no

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2020-03-23 17:51:04 -0600 ssokolow

Find only internal contours in JavaCV/OpenCV

1k

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1

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no

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2020-03-17 15:01:25 -0600 DrThrax

Java: Core.Pow: (-215:Assertion failed) depth == CV_32F || depth == CV_64F

441

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2020-03-06 03:26:55 -0600 supra56

calling mat.copyto and mat.clone in loop causes machine to freeze in java [closed]

448

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2020-02-28 16:05:04 -0600 PressedTin

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

179

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2020-02-28 14:44:41 -0600 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?

4k

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2020-02-27 09:06:05 -0600 PressedTin

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

344

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1

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no

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2020-02-25 07:36:31 -0600 rm_ein

OpenCV 4.2: The method drawFrameAxes(Mat, Mat, Mat, Mat, Mat, float) is undefined for the type Calib3d

259

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2020-02-25 07:25:11 -0600 Jonaskri

Upgraded from 3.4.9 to 4.2.0 and can no longer see camera view [Android]

843

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2020-02-24 05:27:22 -0600 krjeev

Blob depth should be CV_32F or CV_8U

580

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2020-02-11 11:59:26 -0600 Tarcisioflima

Converting Mat to one dimensional float array for EM?

2k

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1

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1

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2020-01-29 02:58:57 -0600 berak

Face recognition app for android (OpenCV)

4k

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1

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2020-01-24 09:44:22 -0600 robertodaza

VideoCapture (0) does not work in mac Catalina. The program crashed

3k

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1

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no

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2020-01-24 08:37:12 -0600 decioschmitt

(-215:Assertion failed) m.dims >= 2 in function 'cv::Mat::Mat'

434

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2020-01-13 20:53:04 -0600 supra56

Opencv Videocapture cannot get stream

213

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2020-01-12 05:34:37 -0600 Gourav

Difference in output of same c++ and Java function in OpenCV

Video
java

440

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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

992

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1

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2020-01-06 09:37:59 -0600 Gourav

Java (-215:Assertion failed) mv[i].size == mv[0].size && mv[i].depth() == depth in function 'cv::merge'

java
merge

3k

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1

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2020-01-03 07:05:22 -0600 supra56

java.lang.UnsupportedOperationException: Mat data type is not compatible: 6[SOLVED]

138

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2020-01-02 08:06:43 -0600 Gourav

Error while implementing the "out of focus deblur tutorial" in java

225

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1

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-1

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2020-01-02 06:11:24 -0600 GabrielLuke

Need help in recognising the image for face recognition app using OpenCV

268

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-1

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2020-01-02 00:10:01 -0600 david cairns

skew angel correction using java [closed]

489

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2019-12-24 14:18:38 -0600 karDilip

OpenCV Java: Iterate through all points in Line as obtained from FitLine & find distance of each point to Contour edge using pointPolygonTest - Little Help Please!

opencv
java

204

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no

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no

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2019-12-15 21:37:09 -0600 Avadhoot05

Mass center of contour is showing incorrectly in opencv java

513

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1

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no

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2019-12-08 07:24:50 -0600 berak

How to calculate the value of the glcm feature?

8k

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3

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no

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2019-11-30 08:47:40 -0600 rtrahms

Importing OpenCV 4.X android SDK module into Android Studio

282

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1

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2019-11-29 20:57:32 -0600 blorgggg

1,159 questions

SIGSEGV in libopencv_core.4.1.dylib called from java, works on one machine but not another [closed]

How can i make matchtemplate with threshold (java maeven)

OpenCV 4.2 build with contrib modules java

Displaying UDP Multicast Stream

Find only internal contours in JavaCV/OpenCV

Java: Core.Pow: (-215:Assertion failed) depth == CV_32F || depth == CV_64F

calling mat.copyto and mat.clone in loop causes machine to freeze in java [closed]

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

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 get 0-255 RGB values from an RGBA mat?

OpenCV 4.2: The method drawFrameAxes(Mat, Mat, Mat, Mat, Mat, float) is undefined for the type Calib3d

Upgraded from 3.4.9 to 4.2.0 and can no longer see camera view [Android]

Blob depth should be CV_32F or CV_8U

Converting Mat to one dimensional float array for EM?

Face recognition app for android (OpenCV)

VideoCapture (0) does not work in mac Catalina. The program crashed

(-215:Assertion failed) m.dims >= 2 in function 'cv::Mat::Mat'

Opencv Videocapture cannot get stream

Difference in output of same c++ and Java function in OpenCV

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

Java (-215:Assertion failed) mv[i].size == mv[0].size && mv[i].depth() == depth in function 'cv::merge'

java.lang.UnsupportedOperationException: Mat data type is not compatible: 6[SOLVED]

Error while implementing the "out of focus deblur tutorial" in java

Need help in recognising the image for face recognition app using OpenCV

skew angel correction using java [closed]

OpenCV Java: Iterate through all points in Line as obtained from FitLine & find distance of each point to Contour edge using pointPolygonTest - Little Help Please!

Mass center of contour is showing incorrectly in opencv java

How to calculate the value of the glcm feature?

Importing OpenCV 4.X android SDK module into Android Studio

Structured Light Module Missing "decode" function

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