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).
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
The best feature detection will depend on your application, but typically people want speed for real-time application, which makes ORB a better choice. SIFT is good, but slow for real-time.
Will this work for mechanical objects such as screws or nut bolts? Will it be able to detect the difference in the length of a screw even if all other features are the same?
It could only work it the screws are in the exact same position and also the camera is always the same, otherwise It won't, you should use more advanced method to make such detection.
You might try teaching something to detect the head of a bolt / screw, then detect to which side the shank of the screw is, and then attempt to figure out how far the shank extends. That should be a more general solution than teaching it to find a certain length of screw.
Thanks sir I have my 538 subscribers yet, I want to extend my channel subscribers, I have changed the morning microphone, I am now providing a complete demo of the code along with voice description. Now I need your kind suggestions about how further changes should be made thanks 👍
hi sir, good morning. your all videos are excellent. working very nicely. sir as I am PhD student working on a real-time image based herbicide applicator. in my case, I need to detect greenness and apply herbicide. when I fix one threshold value for green colour detection from soil background. due to varying in light condition and shadow creating the effect on the threshold. So please suggest me one robust method that can work well in all conditions.
non free algorithms such as sift,surf have been removed from opencv-contrib-python for many months now, the only way you can use them is to either use an old version or compile it yourself.
@@MrKryptoGaming Which older version is exactly suitable for this issue?? And can i just replace the version that u r gonna say in this command ? pip install opencv-python==3.3.0.10 opencv-contrib-python==3.3.0.10
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 'cv::xfeatures2d::SIFT::create' Help?
This is happening with the latest version of Opencv 3.4.3 . For the moment you could solve this problem installing an older version of Opencv , like 3.4.1
I've done a video about that th-cam.com/video/I8tHLZDDHr4/w-d-xo.html only instead of using ORB I used sift in that video but the principles are the same, just you need to change the algorythm
Great video! I was playing around with the code and testing it with different images. It seems to find false matches when trying it with two images completely unrelated to each other. (drive.google.com/file/d/1UunjmBzm24qIBvoEPdfmihTRSIlGuffW/view?usp=sharing) Do you know why that is and how I can resolve it? Thanks!
cv2.error: OpenCV(4.0.0) /Users/travis/build/skvark/opencv-python/opencv_contrib/modules/xfeatures2d/src/sift.cpp:1207: 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 'create' Hello i get this error. Please can u help me? I have opencv4.0.0. I have installed contrib
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►► You can Build a Computer Vision software to DETECT and TRACK any Object.
→ 4-Step FREE Workshop pysource.com/blueprint-workshop-signup/
Finally SIFT is free starting OpenCV 4.3
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).
70k views. 15k subscribers...not cool ppl! This channel deserves more subs
Great Work buddy , it is really helpfull for me
Thank you from India
You did great really appreciated bro keep it up :) :)
Thank you !
Amazing! Thank you!!
hi, in a video, can i get a sequence of frames (10-20 images) to improve this feature extraction? if yes, how?
thank you very much for my lecture
How can we use it for multiple images like traning and testing file ?
Awesome!
thanks....very useful.....
thanku for ORB..
Thank you so much !
Una pregunta, hay forma de usar ORB pero para identificar 2 objetos, por ejemplo un circulo, triangulo o mas características?
It is also possible to track SIFT features with optical flow like KLT?
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
AttributeError: module 'cv2.cv2' has no attribute 'xfeatures2d'. completed opencv- python 4, open-contrib-pyhton 4
Will this enable SIFT algorithm?
Thank you from Ukraine)
Hello there, I really found video very useful. I need to contact the tutor if possible. PLS. I need his contact
Is there any python module for learning dictionary from image patches. L1 minimization algorithms
can you suggest me how can i use gist descriptor as surf and sift? thank you
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
Thank you. Which is the best feature detection algorithm among these three?
The best feature detection will depend on your application, but typically people want speed for real-time application, which makes ORB a better choice. SIFT is good, but slow for real-time.
Thanks
can i write an instruction for know information about the descriptors? like contrast, position, etc.
how can we apply stride of 4 using this method in sift descriptor?
Sir, how to extract the value of keypoints detected? Can you help me,Thank you.
has no attribute xfeatures2d
How to use them by CUDA, I tried but I did not observe any differences between CPU and GPU.
Can we find using this technique if a particular cropped image belongs to another complete image or not
Yes, I also did a tutorial about that. check this video th-cam.com/video/9mQznoHk4mU/w-d-xo.html
Will this work for mechanical objects such as screws or nut bolts? Will it be able to detect the difference in the length of a screw even if all other features are the same?
It could only work it the screws are in the exact same position and also the camera is always the same, otherwise It won't, you should use more advanced method to make such detection.
You might try teaching something to detect the head of a bolt / screw, then detect to which side the shank of the screw is, and then attempt to figure out how far the shank extends. That should be a more general solution than teaching it to find a certain length of screw.
Thanks sir I have my 538 subscribers yet, I want to extend my channel subscribers, I have changed the morning microphone, I am now providing a complete demo of the code along with voice description. Now I need your kind suggestions about how further changes should be made thanks 👍
does anybody know how to visualize the descriptors? (not the keypoints)
Hi i have a doubt . How to extract gray matters and white matter from brain mri
hi sir, good morning. your all videos are excellent. working very nicely. sir as I am PhD student working on a real-time image based herbicide applicator. in my case, I need to detect greenness and apply herbicide. when I fix one threshold value for green colour detection from soil background. due to varying in light condition and shadow creating the effect on the threshold. So please suggest me one robust method that can work well in all conditions.
Did you find a solution for that problem sir.
Not yet
AttributeError: module 'cv2.cv2' has no attribute 'xfeatures2d'
pip install opencv-python==3.3.0.10 opencv-contrib-python==3.3.0.10
Everyone having problem use this command.
non free algorithms such as sift,surf have been removed from opencv-contrib-python for many months now, the only way you can use them is to either use an old version or compile it yourself.
@@MrKryptoGaming Which older version is exactly suitable for this issue??
And can i just replace the version that u r gonna say in this command ? pip install opencv-python==3.3.0.10 opencv-contrib-python==3.3.0.10
Sir, may I ask you?
How to find keypoints scale?
Can anyone please help me..!!! i want to find the centroid, orientation, area of an object using opencv .. how will i do it???
Same
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 'cv::xfeatures2d::SIFT::create'
Help?
I am getting the same error :/
can u please explain process little more..i have same problem..
I got same problem
i never managed to solve it
This is happening with the latest version of Opencv 3.4.3 .
For the moment you could solve this problem installing an older version of Opencv , like 3.4.1
How can I use ORB features random points on object to estimate it POSE w.r.t camera?
I've done a video about that th-cam.com/video/I8tHLZDDHr4/w-d-xo.html
only instead of using ORB I used sift in that video but the principles are the same, just you need to change the algorythm
can i use BRISK as well ?how ?
what is None in line no. 10 @7:00
Can PCA be applied on ORB?
hi can you please help me out with some doubts regarding my project , its urgent please
Great video! I was playing around with the code and testing it with different images. It seems to find false matches when trying it with two images completely unrelated to each other. (drive.google.com/file/d/1UunjmBzm24qIBvoEPdfmihTRSIlGuffW/view?usp=sharing) Do you know why that is and how I can resolve it? Thanks!
Can try using homography techniques to isolate the areas that should be correctly matched. Ransac is also used in the process to remove the outliers
it is showing "module 'cv2.cv2' has no attribute 'xfeatures2d'"
Did you solve the issue?I have the same one
Error saying that keypoint is not defined
is hard be adult
Help me
cv2.error: OpenCV(4.0.0) /Users/travis/build/skvark/opencv-python/opencv_contrib/modules/xfeatures2d/src/sift.cpp:1207: 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 'create'
Hello i get this error. Please can u help me? I have opencv4.0.0. I have installed contrib
You need to build from source