Optical Flow with Lucas-Kanade method - OpenCV 3.4 with python 3 Tutorial 31

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6 жыл бұрын

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Пікірлер: 44

@hannahlambdaa 3 жыл бұрын

Amazing, it works pretty well!! This was my first dip into Optical flow and I love it... so many applications seem possible. Thank you

@akshobshekhar736 5 жыл бұрын

Thanks brother, you tutorials are much better than udemy tutorial i bought

@noeltam75 4 жыл бұрын

Wow... That's very well explained. Thanks man.

@olehmisko9760 5 жыл бұрын

Thank you for this awesome tutorial!

@MrWaimanu 4 жыл бұрын

Thanks for this video, really helpful!

@ekasuryadana3043 5 жыл бұрын

Thanks sir, awesome tutorials

@jiuyuanlu4731 5 жыл бұрын

Nice lecturing, I do like it. Thanks

@mamoudousano3354 5 жыл бұрын

Thanks for all great tutorials, how can i do if i want to chose many points.

@asteroidpark 4 жыл бұрын

Thank you for the kind lecture.

@LEI8037 5 жыл бұрын

Thanks for such a useful video.

@Joy_jester 5 жыл бұрын

amazing video ,learnt a lot .

@hikmetcankoseoglu5439 5 жыл бұрын

Do you know any methods for detecting flow of a liquid

@miguelchip9784 5 жыл бұрын

Thanks, this help me a lot...! 👍😃

@aaaa8766 3 жыл бұрын

Great content man

@ShivaniAMehta 2 жыл бұрын

You explained so well. Thanks a lot for the video. Can you please tell how can I implement Lucas-Kanade for affine and projective transformation?

@dtom989 6 жыл бұрын

Hi, great video, keep it up

@kmashal2 2 жыл бұрын

How can I track multiple points that I place using mouse ?

@nyomankresna557 3 жыл бұрын

i have a problem with my old points, can you help me?

@ass8ash 6 жыл бұрын

Awesome! I’m gonna try this out for sure. Is this algorithm restricted to tracking points or can it be extended to ROI’s? I wonder if passing in masks will help the performance

@pysource-com 6 жыл бұрын

yes definitely you can extended to ROIs! you should use the corner detection to identify the points and then Lucas kanade track the vectors.

@aman11022 3 жыл бұрын

The first time calcOpticalFlowPyrLK is calculating, the old_gray and gray_frame are not consecutive. This is why you see the green point not exactly where you clicked.

@aminbenarieb144 4 жыл бұрын

Awesome

@mariuspenteliuc 6 жыл бұрын

Hi! Could it be the shutter speed why the detection of new points isn't so good? A webcam has a slow shutter speed, so motion blur might become a problem when analyzing fast moving objects.

@pysource-com 6 жыл бұрын

HI Marius, thanks for this interesting explanation. It's really likely that it affects the detection, considering I'm using the original webcam of my laptop, and so it's not that good.

@1miguelavilagaleana 5 жыл бұрын

Some advice for doing a program that detects risky situations?

@PhrAntoine 3 жыл бұрын

I would suggest using an AI network to identify and know what risky situations are. Then you could use Optical Flow to read the movements in the environment. From there the AI would process and identify if the situation is risky.

@rocktelis111 Жыл бұрын

Any help please ? Traceback (most recent call last): File "C:\Users\ppant\Downloads\New folder (8)\lucas-kande.py", line 44, in cv2.circle(frame, (x, y), 5, (0, 255, 0), -1) cv2.error: OpenCV(4.5.5) :-1: error: (-5:Bad argument) in function 'circle' > Overload resolution failed: > - Can't parse 'center'. Sequence item with index 0 has a wrong type > - Can't parse 'center'. Sequence item with index 0 has a wrong type

@nilsb.4076 Жыл бұрын

Hey, you can replace cv2.circle... with cv2.circle(frame,(int(x),int(y)),5,(255,255,0),-1). With Int it works

@user-pc4tr5jv7w 5 жыл бұрын

HI! I am a taiwanese student , my english is not so well, but i want to ask a question ,how could i track two points at the same time , I try it myself, but it didnt work ,can you tell me some tips?

@pysource-com 5 жыл бұрын

You should make a few changes, probably it's easier to write it from scratch if you want make it work for 2 ore more points. I suggest you to take a look at the original docs and experiment with them. opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_video/py_lucas_kanade/py_lucas_kanade.html#lucas-kanade

@user-pc4tr5jv7w 5 жыл бұрын

thank you very much! I will read that web page! By the way ,Can I add your facebook or instagram? I am using opencv to do a little project I think i will have some question that I can contact you easier, if you can accept