Feature detection (SIFT, SURF, ORB) – OpenCV 3.4 with python 3 Tutorial 25

We’re going to learn in this tutorial how to find features on an image.
We will test three different algorythms: Sift, Orb and Surf

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[ИванКозлов-кю]

Finally SIFT is free starting OpenCV 4.3

[sanisalisu]

Hello there, I really found video very useful. I need to contact the tutor if possible. PLS. I need his contact

[Leo-ueno]

For people with sift problem, if you don't mind you can just use orb instead of sift or surf. Delete the sift and surf lines should make it work (and of course keep orb.detectAndCompute).

[GauravSharma-blxq]

Great Work buddy, it is really helpfull for me

[siddhisalvi]

How can we use it for multiple images like traning and testing file ?

[ak_allday__]

70k views. 15k subscribers...not cool ppl! This channel deserves more subs

[rodolfosanches]

hi, in a video, can i get a sequence of frames (10-20 images) to improve this feature extraction? if yes, how?

[iamnoob]

You did great really appreciated bro keep it up :) :)

[samardas]

can you suggest me how can i use gist descriptor as surf and sift? thank you

[anguyenmaianh]

AttributeError: module 'cv2.cv2' has no attribute 'xfeatures2d'. completed opencv- python 4, open-contrib-pyhton 4

[helaluddinmullah]

Is there any python module for learning dictionary from image patches. L1 minimization algorithms

[shekinavictor]

hi sir, your videos are awesome and thank u for this code. but how can i change this code for using the video that was saved in my disk? please help

[michaelstolze]

It is also possible to track SIFT features with optical flow like KLT?

[nielspalmans]

does anybody know how to visualize the descriptors? (not the keypoints)

[julianandresdiazgranados]

Una pregunta, hay forma de usar ORB pero para identificar 2 objetos, por ejemplo un circulo, triangulo o mas características?

[IBasilisvirus]

cv2.error: OpenCV(3.4.3)
error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in function

Help?

[sanisalisu]

This tutorial is quite educative. my problem is just that i dont know what you are working with, I meant the platform. is it Spyder, Jupyter, Im working with Spyder but I cant run SURF and SIFT pleases help me

[loneband]

Sir, how to extract the value of keypoints detected? Can you help me, Thank you.

[syedmuhammadusmanghani]

how can we apply stride of 4 using this method in sift descriptor?

[punks]

Hey,
How to save that features for further use