CODEWITHSUNDEEP
c++opencvimage-processingmotion-detection
Shva DHU
Shva DHU

Reputation: 19

Motion detection by eliminating constant movements

I am trying to implement a motion detection in OpenCV C++. I tried various methods like MOG, Optical flow which work fine but is there a way we can eliminate constant movements in the scene like a constant fan motion etc ? I have opencv accumuateWeighted() in mind but not sure if it works. Is there any better way we can do it ?

Upvotes: 0

Views: 134

Answers (1)

flamelite
flamelite

Reputation: 2854

I have not got full robust solution and also i don't have any experience with video processing but i would put my idea whatever till now i have got in to this problem:

First consider a few pairs of consecutive image frames from the video and convert them to gray scale for more robust comparison.

Raster scan the image pairs and find the difference of image pairs by comparing corresponding pairs. The resultant image will give the pixel location where there is a change in image to image in a pair, cluster these pixels locations and make a bounding box over them. So that this bounding box region will mark an object which is translating/rotation.

Now as we have applied the above image difference operation over several pairs. We will have rotating/translating bounding box in each image pair difference. Now check in each resultant image difference with pixels having bounding box over them.

Compare bounding box central location in a difference image with other difference images. If bounding box with a very slight variation in its central location exists across all difference images then object contained in that bounding box will be having rotational motion like Fan,leaves and remaining bounding boxes will represent the actual translating objects in the video.

Upvotes: 1

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