Questions - OpenCV Q&A Forum

852

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2020-11-26 08:06:40 -0600 berak

Error "Assertion failed (scn == 3 || scn == 4) in cvtColor" when calculating ORB features on point cloud

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2

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2020-10-26 15:47:52 -0600 kilwa

Algorithm suggestion for texture image matching

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1

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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

375

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2020-06-27 01:17:27 -0600 berak

Feature detector vs dense detector

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2019-09-03 05:03:55 -0600 lars27

ORB detector Segmentation Fault - Python [closed]

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2019-03-27 13:26:56 -0600 ladynoob

I'm got a "free(): invalid pointer" error when try using detectAndCompute

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2019-03-12 03:52:48 -0600 SanjayKamath

Best Object Detection Criteria

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2019-02-12 11:56:20 -0600 newlearner1994

Different feature descriptor and extractor

845

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-1

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2018-12-05 01:16:06 -0600 berak

Why FeatureDetector is deprecated on OpenCV 3.42 ??

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2018-10-16 20:39:45 -0600 ashikaumanga

GPU SURF : What is the keypointsRatio parameter?

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

How to use ROC curve class in opencv?

115

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

Repeatability of Feature Detector: Maximum Value Overlap Error

166

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

BOWKMeansTrainer and features extraction

305

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

Detection and tracking of 2d rotating sprites.

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3

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2018-03-25 12:42:45 -0600 cellurl

Traffic Sign Recognition Concept

758

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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.

128

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

Create Templates from Feature Homography

474

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

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

384

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

Java BRIEF

730

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2017-07-26 05:22:47 -0600 Raki

How to use KAZE features in opencv ?

featuredetector

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

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

349

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

FAST or ORB feature detection pattern to scan the image

94

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

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

featuredetector

339

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

Recommended Detector for this kind of image?

featuredetector

142

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1

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2017-02-09 05:34:37 -0600 karl71

structure of opencv's hog output

451

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no

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

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

340

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

perspectiveTransform error for ORB detector [closed]

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

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

1k

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3

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1

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2016-09-15 05:59:35 -0600 _AdT_

Feature Detector corrupts KeyPoint vector in OpenCV3.0 using MSVC 14: _BIG_ALLOCATION_ALIGNMENT Assertion message

169

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

70 questions

Error "Assertion failed (scn == 3 || scn == 4) in cvtColor" when calculating ORB features on point cloud

Algorithm suggestion for texture image matching

Drawmatches throws error when trying to use only good matches

Feature detector vs dense detector

ORB detector Segmentation Fault - Python [closed]

I'm got a "free(): invalid pointer" error when try using detectAndCompute

Best Object Detection Criteria

Different feature descriptor and extractor

Why FeatureDetector is deprecated on OpenCV 3.42 ??

GPU SURF : What is the keypointsRatio parameter?

How to use ROC curve class in opencv?

Repeatability of Feature Detector: Maximum Value Overlap Error

BOWKMeansTrainer and features extraction

Detection and tracking of 2d rotating sprites.

Traffic Sign Recognition Concept

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

Create Templates from Feature Homography

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

Java BRIEF

How to use KAZE features in opencv ?

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

FAST or ORB feature detection pattern to scan the image

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

Recommended Detector for this kind of image?

structure of opencv's hog output

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

perspectiveTransform error for ORB detector [closed]

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

Feature Detector corrupts KeyPoint vector in OpenCV3.0 using MSVC 14: _BIG_ALLOCATION_ALIGNMENT Assertion message

ORB Feature Descriptor Official Paper Explanation

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