Questions - OpenCV Q&A Forum

23k

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2

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4

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2013-03-25 08:59:24 -0600 berak

How to get the coordinate from "class KeyPoint"?

KeyPoint+SIFT

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1

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4

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2012-11-11 10:19:25 -0600 Simone

To save vector "KeyPoint" to file using builtin write function

406

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1

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2

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2013-06-13 02:48:42 -0600 BK

Feature extraction not reproducible

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2015-11-29 01:26:19 -0600 angubenko

OpenCV Why does number of SIFT keypoints go over threshold?

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1

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no

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2013-02-16 09:40:39 -0600 Guanta

How does the SiftDescriptorExtractor convert descriptor values?

735

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1

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no

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2013-03-11 10:50:47 -0600 StevenPuttemans

sift extract keypoints

575

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no

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no

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2013-04-24 02:44:02 -0600 zhfkt

Strange Octave value in SIFT algorithm? [closed]

906

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no

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2013-09-19 05:34:53 -0600 berak

fail to load keypoints from .yml file

552

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no

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2013-10-02 10:19:16 -0600 Siegfried

Evaluate Quality of Matching with SVM [closed]

400

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1

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no

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2013-10-24 06:53:45 -0600 berak

Feature couldn't be extracted from some gif images using Flannbased matcher

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no

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no

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2014-09-09 15:20:45 -0600 Metalzero2

ROS: OpenCV SURF is there but can't be found [closed]

126

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2014-11-19 03:11:57 -0600 muhammedabuali

what does the size attribute of the Keypoint class means?

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1

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2016-09-11 08:26:16 -0600 Tetragramm

how to get KeyPoint angle

KeyPoint+SIFT

576

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no

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no

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2017-11-22 03:03:16 -0600 QQQ

python opencv sift not return keypoints but return descriptors

KeyPoint+SIFT

408

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no

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no

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2018-02-19 15:21:03 -0600 S.EB

How to calculate generalized Hough voting of SIFT features for content-based image retrieval?

145

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no

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no

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2018-02-21 15:10:39 -0600 S.EB

How to store the positions of codebook entries (visual vocabularies in dictionary) relative to the object center?

568

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no

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no

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2018-03-26 10:17:53 -0600 rory

Confusion Matrix and TP, FP, FN in SIFT (python implementation)

582

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1

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no

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2019-01-07 07:12:58 -0600 faith_wang

sift detectandcompute get different size keypoint and descriptor

722

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1

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no

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2019-10-24 08:13:56 -0600 berak

19 questions

How to get the coordinate from "class KeyPoint"?

To save vector "KeyPoint" to file using builtin write function

Feature extraction not reproducible

OpenCV Why does number of SIFT keypoints go over threshold?

How does the SiftDescriptorExtractor convert descriptor values?

sift extract keypoints

Strange Octave value in SIFT algorithm? [closed]

fail to load keypoints from .yml file

Evaluate Quality of Matching with SVM [closed]

Feature couldn't be extracted from some gif images using Flannbased matcher

ROS: OpenCV SURF is there but can't be found [closed]

what does the size attribute of the Keypoint class means?

how to get KeyPoint angle

python opencv sift not return keypoints but return descriptors

How to calculate generalized Hough voting of SIFT features for content-based image retrieval?

How to store the positions of codebook entries (visual vocabularies in dictionary) relative to the object center?

Confusion Matrix and TP, FP, FN in SIFT (python implementation)

sift detectandcompute get different size keypoint and descriptor

Conver cv::KeyPoint::pt to 8 bit unsigned int in opencv C++

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