Questions - OpenCV Q&A Forum

221

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2015-04-13 09:51:08 -0600 Guanta

DenseFeatureDetector: Only a certain number of points?

141

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no

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no

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2015-06-04 05:50:29 -0600 cv_new

How to set the suitable parameters for the feature detectors?

172

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2015-06-24 12:19:44 -0600 LBerger

extractor.compute clears keypoints

3k

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no

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2020-10-04 18:58:48 -0600 VoteCoffee

Drawmatches throws error when trying to use only good matches

5k

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2015-07-04 05:51:26 -0600 mkc

OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’

featuredetector

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2015-08-26 15:04:14 -0600 marm

Segfault in SimpleBlobDetector::findBlobs [closed]

234

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2015-09-18 03:10:16 -0600 Luisloez89

Strange behaviour of cv::BFMatcher to match descriptors from custom ASIF (based on vlFeat)

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2015-11-04 04:50:50 -0600 ines.martins

How to verify if two images have the same object/content?

187

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2016-01-08 12:12:50 -0600 thexnightmare

Calculating Z axis of tracked image or 3d tracker algorithm

346

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2016-02-11 08:12:35 -0600 KirbX

Feature Matching Large images [closed]

340

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2016-03-06 05:52:29 -0600 berak

How to detect keypoints, compute descriptors and match those descriptors in OpenCV 3.0.0, Visual Studio 2013, in C++?

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2016-04-01 17:35:37 -0600 Tetragramm

Detect presence/absence of a screw - Image comparison

301

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2016-06-27 13:00:20 -0600 ogx

FeatureDetector minimum template size

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2016-07-04 23:30:51 -0600 benz

define marker and detect the number of markers

199

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no

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no

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2016-08-04 08:58:33 -0600 WhoAmI

ORB Feature Descriptor Official Paper Explanation

1k

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2016-09-16 04:04:12 -0600 berak

How to use the dense sampling detector to image with OpenCV3_python?

381

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2016-10-28 00:42:12 -0600 ElectronicEng2015

perspectiveTransform error for ORB detector [closed]

483

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2016-11-13 16:44:23 -0600 Tetragramm

cv::Feature2D::compute called with empty std::vector<cv::KeyPoint> [closed]

366

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2017-04-17 01:54:40 -0600 Luis Oscar

Recommended Detector for this kind of image?

featuredetector

106

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no

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2017-06-13 23:11:10 -0600 berak

How do you change the settings of the FeatureDetector in Java?

featuredetector

384

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no

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2017-06-15 12:48:17 -0600 hayley

FAST or ORB feature detection pattern to scan the image

810

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no

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2017-07-08 00:59:54 -0600 jrussino

"illegal memory access" when calling cv::cuda::ORB::detectAndComputeAsync() from multiple threads

410

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2017-08-02 05:57:52 -0600 PiMac

Java BRIEF

488

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2017-10-05 04:14:02 -0600 Balaji R

Partial Matches using FLANN Based Matcher. How to increase leniancy? c++

138

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no

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2017-11-30 15:19:39 -0600 MRDaniel

Create Templates from Feature Homography

1k

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2018-03-21 09:20:05 -0600 kjoshi

Using cv::gpu::FAST_GPU with cv::gpu::PyrLKOpticalFlow in OpenCV 2.4.13.6.

322

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no

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no

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2018-03-29 13:39:35 -0600 dwarf

Detection and tracking of 2d rotating sprites.

180

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1

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2018-04-09 03:01:04 -0600 berak

BOWKMeansTrainer and features extraction

124

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no

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no

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2018-07-04 14:49:38 -0600 SAKhan

Repeatability of Feature Detector: Maximum Value Overlap Error

567

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2018-08-12 04:45:55 -0600 krishprince

70 questions

DenseFeatureDetector: Only a certain number of points?

How to set the suitable parameters for the feature detectors?

extractor.compute clears keypoints

Drawmatches throws error when trying to use only good matches

OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’

Segfault in SimpleBlobDetector::findBlobs [closed]

Strange behaviour of cv::BFMatcher to match descriptors from custom ASIF (based on vlFeat)

How to verify if two images have the same object/content?

Calculating Z axis of tracked image or 3d tracker algorithm

Feature Matching Large images [closed]

How to detect keypoints, compute descriptors and match those descriptors in OpenCV 3.0.0, Visual Studio 2013, in C++?

Detect presence/absence of a screw - Image comparison

FeatureDetector minimum template size

define marker and detect the number of markers

ORB Feature Descriptor Official Paper Explanation

How to use the dense sampling detector to image with OpenCV3_python?

perspectiveTransform error for ORB detector [closed]

cv::Feature2D::compute called with empty std::vector<cv::KeyPoint> [closed]

Recommended Detector for this kind of image?

How do you change the settings of the FeatureDetector in Java?

FAST or ORB feature detection pattern to scan the image

"illegal memory access" when calling cv::cuda::ORB::detectAndComputeAsync() from multiple threads

Java BRIEF

Partial Matches using FLANN Based Matcher. How to increase leniancy? c++

Create Templates from Feature Homography

Using cv::gpu::FAST_GPU with cv::gpu::PyrLKOpticalFlow in OpenCV 2.4.13.6.

Detection and tracking of 2d rotating sprites.

BOWKMeansTrainer and features extraction

Repeatability of Feature Detector: Maximum Value Overlap Error

How to use ROC curve class in opencv?

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