Questions - OpenCV Q&A Forum

899

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2

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no

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2019-09-07 11:51:44 -0600 tomihasa

Install OpenCV in Windows 10

4k

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2

answers

1

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2019-09-10 14:30:12 -0600 ImageProcessing_MF

Placing UYVY data in a Mat, C++

669

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2

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no

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2019-09-16 06:05:43 -0600 Harsh1307

OpenCV failure while executing stitching in GPU [closed]

opencv

376

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2

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no

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2019-10-08 09:21:08 -0600 nicolasabril

Software synthesizer interface detection (lines inside of circles)

572

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2

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no

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2019-09-14 00:11:32 -0600 holger

import cv2 error in python

1k

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2

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1

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2019-09-20 17:01:30 -0600 Eduardo

Interpolation of transformation matrix

927

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2

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no

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2019-09-21 02:42:38 -0600 LBerger

RPi 3B+ setting OPENCV_ENABLE_NONFREE:BOOL=ON does not enable "non-free algorithms" after cmake

433

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2

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no

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2019-10-09 01:01:18 -0600 Vizier87

Accessing a camera-linked X1 mini PCIE camera

opencv4

2k

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2

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no

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2020-03-29 05:44:06 -0600 ComputerVisionary

[OSX] Can't find opencv_createsamples & opencv_traincascade

8k

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2

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no

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2019-10-10 08:24:10 -0600 nicolasabril

Error while working with contours

507

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2

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1

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2019-10-15 08:19:36 -0600 supra56

[SOLVED]How to Save Each ROI Seperately

roi

1k

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2

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no

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2019-10-23 21:01:41 -0600 supra56

Unable to operate 2 arrays due to Assertion failed (type2 == CV_64F && (sz2.height == 1 || sz 2.height == 4)) in cv::arithm_op

593

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2

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1

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2019-10-22 10:02:10 -0600 berak

Face embedding calculation from Java

6k

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2

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no

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2020-02-25 08:03:19 -0600 Imran B

resize in cuda from python.

913

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2

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no

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2019-10-29 11:15:24 -0600 supra56

My simple code doesnt work, it says CV_WINDOWS_NORMAL is an undeclared identifier, what should I do, is there some other lib that I need to include?

2k

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2

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2019-11-05 06:01:18 -0600 Nori5700

Cannot open include file: 'opencv2/core/utils/tls.hpp

c++#opencv

683

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2

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no

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2019-12-29 13:55:02 -0600 bwvb

Just linking to opencv ruins thread-concurrency!?

12k

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2

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2019-11-04 12:28:24 -0600 mvuori

VideoWriter: recorded video play too fast

819

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2

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no

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2019-11-06 14:04:15 -0600 supra56

OpenCV does not read Logitech C920 .wmv files

746

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2

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no

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2019-11-07 03:36:57 -0600 kbarni

Give random color to each intensity

random-color

2k

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2

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no

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2019-11-10 04:08:33 -0600 kbarni

How to get PointGrey camera acquiring image data in Python on Raspberry Pi?

11k

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2

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1

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2019-11-13 01:36:22 -0600 berak

undefined reference to imread

c++#opencv

1k

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2

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no

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2019-11-18 09:53:48 -0600 supra56

Is it possible to detect a circle with grey color and blue dot in center

houghcircle

4k

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2

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no

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2020-01-04 13:06:34 -0600 supra56

How to exclude outliers from detected Orb features?

556

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2

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no

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2020-01-29 06:16:00 -0600 cudawarped

Why SURF_CUDA does not bind to python?

11k

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2

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no

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2019-12-03 13:16:16 -0600 supra56

Detect ellipses, ovals in images with OpenCV python[SOLVED]

4k

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2

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no

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2019-12-03 04:36:09 -0600 supra56

TypeError: UMat() missing required argument 'ranges' (pos 2)

imageprocessing

9k

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2

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no

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2019-12-12 08:46:51 -0600 supra56

Python, eliminate small contours

findContours

1k

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2

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1

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2019-12-15 11:38:17 -0600 Eventine

Mahalanobis Distance between 2 images

1k

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2

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no

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2019-12-13 14:45:56 -0600 supra56

29,830 questions

Install OpenCV in Windows 10

Placing UYVY data in a Mat, C++

OpenCV failure while executing stitching in GPU [closed]

Software synthesizer interface detection (lines inside of circles)

import cv2 error in python

Interpolation of transformation matrix

RPi 3B+ setting OPENCV_ENABLE_NONFREE:BOOL=ON does not enable "non-free algorithms" after cmake

Accessing a camera-linked X1 mini PCIE camera

[OSX] Can't find opencv_createsamples & opencv_traincascade

Error while working with contours

[SOLVED]How to Save Each ROI Seperately

Unable to operate 2 arrays due to Assertion failed (type2 == CV_64F && (sz2.height == 1 || sz 2.height == 4)) in cv::arithm_op

Face embedding calculation from Java

resize in cuda from python.

My simple code doesnt work, it says CV_WINDOWS_NORMAL is an undeclared identifier, what should I do, is there some other lib that I need to include?

Cannot open include file: 'opencv2/core/utils/tls.hpp

Just linking to opencv ruins thread-concurrency!?

VideoWriter: recorded video play too fast

OpenCV does not read Logitech C920 .wmv files

Give random color to each intensity

How to get PointGrey camera acquiring image data in Python on Raspberry Pi?

undefined reference to imread

Is it possible to detect a circle with grey color and blue dot in center

How to exclude outliers from detected Orb features?

Why SURF_CUDA does not bind to python?

Detect ellipses, ovals in images with OpenCV python[SOLVED]

TypeError: UMat() missing required argument 'ranges' (pos 2)

Python, eliminate small contours

Mahalanobis Distance between 2 images

Traceback (most recent call last): File "./Documents/S.py", line 36, in <module> roi_gray, NameError: name 'roi_gray' is not defined

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