How to find direction (directional vectors) of a moving object in a video?

Will the motion estimation algorithm work? Is there any other way to determine the directional vectors?

Answer 1

[Sean de Wolski]

What motion estimation algorithm are you referring to? There are many.

Personally I would recommend block by block phase correlation.

[Harsha Vardhan Rao Avunoori]

I am not sure about the type of motion estimation algorithm but I want to know whether this kind of approach will give me the directional vectors of a moving object ?

[Sean de Wolski]

Yes.

[Harsha Vardhan Rao Avunoori]

Sean what would be the algorithm for block by block phase correlation ?? Is it something like dividing the entire frame into blocks and then applying phase correlation and detecting peaks in each block ?What is the way to get motion field ?

[Sean de Wolski]

Yes! Break your reference and target images into blocks. Perform the phase correlation on each block (probably padded with zeros to a bigger block in the target image), recover the u,v, components of motion, store them in their own matrices.

[Harsha Vardhan Rao Avunoori]

Hey Sean...How can I plot motion field for Phase Correlation method ??? I want to plot motion field for both Phase Correlation and block by block phase correlation....

Answer 2

[Brett Shoelson]

The Video and Image Processing Blockset provides optical flow functionality...written just for this purpose!

Cheers,

Brett

[Harsha Vardhan Rao Avunoori]

I am a student and Can I use the trial version of the Simulink Video and Image Processing Blockset ???Will it have all the features ???

[Brett Shoelson]

Our student versions are fully functional. You can take full advantage of whichever of our products to which you have access.

Answer 3

[parvathy H]

to find the direction of my moving object,I have divided the video frame into blocks. how do i know in which block is my object present now.