Feature Matching (Brute-Force) – OpenCV 3.4 with python 3 Tutorial 26

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[awaisahmad]

I have no words for you man.

You are best teacher.

I have learned alot from these two videos on feature detection and feature matiching.

[hoxyoh]

God`s blessing reflected on code, awesome

[Zainjerr]

Amazing stuff bro I highly appreciate it. You made my life so much easy! God bless you brother

[ywang]

how do I match just the whole book cover and get the coordinates of the four corners?

[harshavardhanan]

hey im facing error while running your code..
matching_result = cv2.drawMatches(img1, kp1, img2, kp2, matches[:50], None, flags=2)
cv2.error: OpenCV(3.4.3) error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
can you please help me out, what is the issue?

[aliisdeniz]

Hi. I have a question for something about filtering matches. I did feature matching with ORB in 2 images from taken different cameras at the same time. I just want to eliminate wrong matches between these two. Any idea how can i do that?

[sanchaykasturey]

Great project!! Is there a way by which we can figure out what is its accuracy

[nichtszusagen]

Thank you again, i have practiced all that .It s amazing

Hi Sergio, thanks for the great video. I have a follow up question.
How can I use a set of detected key points to find the dissimilarity between two images?
Suppose one image had the same features but also extra content. Like in this case your face with the book. How do I draw a bounding box around it

[javlontursunov]

Thank you so much! More power to your elbows!

[nateb]

Is there a method better suited for comparing images of form documents, for example: determining if an image is more similar to a resume rather than a cover letter?

[johnys]

it is showing this error
Traceback (most recent call last):
File "Main.py", line 8, in <module>

cv2.imshow("img1", img1)

cv2.error: OpenCV(4.1.1) error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'

[buianhvu]

Thanks for sharing, could you make another video that applies this one for real time object tracking, I find your video is easy to understand.

[ValSpiridonov]

Do you think there is a way to detect nasolabial fold adjusstment while producing certain emotions- without neural networks?

[JoelPascualMahindo]

How can I avoid false positives? Thanks in advance.

[haiderissam]

Hi Sergio, thanks for the great video.
but i have tried to apply SIFT instead of orb but it didn't work, would you please help me by giving me the code of SIFT or SURF.
many thanks mentor

[nghethuatsong]

What is the meaning of "flags=2" in line 17? Thank you.
matching_result = cv2.drawMatches(img1, kp1, img2, kp2, matches[:50], None, flags=2)

[robr]

Nice video - how can I use this to align it to the same angle as the original image?

[geetasowmya]

Hi, may I know how to implement SSD for brute force matching to match the keypoint descriptors by myself?

[ayushjain]

Hi,
I have a doubt in feature extraction.
Is it important to convert the image into Grayscale for sift and surf feature extraction?