Questions - OpenCV Q&A Forum

361

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1

answer

no

votes

2019-11-28 11:04:17 -0600 holger

How to do hard negative mining for cascade classifier?

374

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1

answer

no

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2019-11-28 07:32:41 -0600 berak

OpenCv on windows server

python

477

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no

answers

-1

votes

2019-11-28 04:09:41 -0600 carlcc

Resource not found: opencv_detector [closed]

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

11k

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2

answers

no

votes

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

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

565

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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?

137

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no

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no

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2019-11-27 12:52:54 -0600 michlvl

histogram: how to find bins values for certain range of data(at Y-axis)?

histogram

727

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no

answers

no

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2019-11-27 12:58:22 -0600 Karido

Combining KAZE keypoints with SIFT descriptors?

963

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1

answer

1

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2019-11-27 11:07:15 -0600 Naman Gupta

can we create a 5*5 kernel np array in c++

1k

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no

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no

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2019-11-27 10:44:59 -0600 Kitnos

Camera pose estimation with QR code by Opencv

1k

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1

answer

no

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2019-11-27 07:47:20 -0600 cudawarped

[OPENCV GPU] How can I convert GpuMat and Vector<Point2f> using HostMem? [closed]

2k

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no

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no

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2019-11-27 03:54:30 -0600 Dianan137

How to choose sigma/kernel size when downsampling image

194

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no

answers

1

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2019-11-26 22:28:21 -0600 evgevd

Logistic Regression doesnt learn anything

432

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no

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no

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2019-11-26 21:40:45 -0600 off99555

How can I solvePnP with fisheye camera parameters?

672

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no

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no

votes

2019-11-26 13:59:12 -0600 Rishan123

cv2.error: OpenCV(4.1.0) /home/pi/opencv/opencv-4.1.0/modules/features2d/src/bagofwords.cpp:55: error: (-215:Assertion failed) !_descriptors.empty() in function 'add'

190

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1

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no

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2019-11-26 08:21:06 -0600 Traveler

Directions on a new project needed

localization

205

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no

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no

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2019-11-26 04:49:00 -0600 Kitnos

Real time video problem [closed]

438

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1

answer

no

votes

2019-11-26 01:02:24 -0600 coincheung

cv2 calculate histogram 3x slower than pillow

pillow
speed

199

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no

answers

no

votes

2019-11-26 01:37:44 -0600 berak

opencv pose keypoints explanation Needed

pose-estimation

602

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1

answer

no

votes

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

How to calculate the value of the glcm feature?

8k

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no

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no

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2019-11-25 15:53:14 -0600 gst

How to convert numpy array to cv::Mat

opencv#python#numpy

246

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no

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no

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2019-11-25 15:09:11 -0600 bananapen

Generate Opticalflow on images using OpenCV

492

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no

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no

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2019-11-25 06:28:55 -0600 JoseAFern

cv::ml::rtrees oob error bug???

309

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no

answers

-1

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2019-11-25 05:19:50 -0600 berak

How do i deploy C++ OpenCV code on Android

122

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no

answers

1

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2019-11-25 01:21:58 -0600 ibrahim_5403

How can I define "scopesToKeep" and "scopesToIgnore" nodes of a frozen model?

316

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1

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no

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2019-11-24 12:12:33 -0600 berak

cascade training... help!

traincascade

1k

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no

answers

no

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2019-11-24 03:31:46 -0600 berak

AttributeError: module 'cv2.cv2' has no attribute 'fillpoly' [closed]

python

2k

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no

answers

no

votes

2019-11-23 13:02:04 -0600 monilogi

How to capture 60 FPS at normal speed on Logitech c922x

456

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no

answers

no

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2019-11-23 07:02:50 -0600 HelloWorld

SVM->trainAuto() Segmentation fault (core dumped) [closed]

SVM

2k

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no

answers

no

votes

2019-11-23 02:35:56 -0600 Martian

29,830 questions

How to do hard negative mining for cascade classifier?

OpenCv on windows server

Resource not found: opencv_detector [closed]

Importing OpenCV 4.X android SDK module into Android Studio

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

Why SURF_CUDA does not bind to python?

histogram: how to find bins values for certain range of data(at Y-axis)?

Combining KAZE keypoints with SIFT descriptors?

can we create a 5*5 kernel np array in c++

Camera pose estimation with QR code by Opencv

[OPENCV GPU] How can I convert GpuMat and Vector<Point2f> using HostMem? [closed]

How to choose sigma/kernel size when downsampling image

Logistic Regression doesnt learn anything

How can I solvePnP with fisheye camera parameters?

cv2.error: OpenCV(4.1.0) /home/pi/opencv/opencv-4.1.0/modules/features2d/src/bagofwords.cpp:55: error: (-215:Assertion failed) !_descriptors.empty() in function 'add'

Directions on a new project needed

Real time video problem [closed]

cv2 calculate histogram 3x slower than pillow

opencv pose keypoints explanation Needed

How to calculate the value of the glcm feature?

How to convert numpy array to cv::Mat

Generate Opticalflow on images using OpenCV

cv::ml::rtrees oob error bug???

How do i deploy C++ OpenCV code on Android

How can I define "scopesToKeep" and "scopesToIgnore" nodes of a frozen model?

cascade training... help!

AttributeError: module 'cv2.cv2' has no attribute 'fillpoly' [closed]

How to capture 60 FPS at normal speed on Logitech c922x

SVM->trainAuto() Segmentation fault (core dumped) [closed]

CUDA CuBlas libs not found

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