Optical flow or optic flow is the pattern of apparent motion of objects, surfaces, and edges in a visual scene caused by the relative motion between an observer (an eye or a camera) and the scene.
Questions tagged [opticalflow]
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how should I use the velX,velY information to get the displacement in X and Y between current frame and previous frame?
I am using the Lucas Kanade Optical Flow algorithm from openCV library in C#; There are series of frames that in every two of them I want to find out what was the optical flow and show it in a pictureBox.
I could fetch the velX & velY from following…
farzin parsa
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OpenCV Optical Flow using python
How do I perform Optical Flow on a set of images?
I want to read multiple images and perform Optical Flow (Lucas Kanade) on them. However I get solutions only for loading a video and not images.
POOJA MORE
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Calculating Normalized Root Mean Square Error
I am trying to calculate normalized root square error (NRMSE) between my optical flow estimation and the provided ground truth
I think I calculated the RMSE correctly, However, the normalized always INF values !
Here is part of my code:
% u , v…
seereen
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Tracking multipel opject using Optical Flow PyrLK from haar detection result
I am trying to track multiple object (cars) in videos using Optical Flow PyrLK from haar detection result but the problem is some time the haar detection (object) does not appear in the frames !
How can I track an object that the haar detection…
Cong_Cong
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Optical Flow on Water
I am currently doing a project that involves applying optical flow to Ocean waves. Are there any suggestions for papers that I should read to accomplish this? Thanks!
Philip Shweta
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Image Lucas-Kanade Optical Flow
I am new to this optical flow in image space, and I am kind of confused that weather the optical flow computed in OpenCV by Lucas-Kanade method is distance, displacement or velocity. Perhaps I might sound foolish but I am really confused.
I feel its…
kcc__
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How to extract velocity vectors of pixels from cvCalcOpticalFlowPyrLK
Can anybody help me to get the velocity information of each pixel from OpenCV's cvCalcOpticalFlowPyrLK?
Dave
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How to count objects in videos
In general, is there any "best practise" on how to use videos as input of deep learning models? How can we annotate video in the most efficient way?
Also, I have some videos with ducks walking through a passage. I want to count the number of…
miki
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What is the difference between the tensor flow and the optical flow?
Can any one give me a accurate response to this question:
What is the difference between the tensor flow and the optical flow?
THANKS
Khouloud
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Lucas-Kanade algorithm with RANSAC
I want to apply Lucas Kanade algorithm and then use its results for applying RANSAC algorithm. Is it possible to apply both together? I am coding in MATLAB.
Daksh Agarwal
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