Rank: 803 based on 178 downloads (last 30 days) and 2 files submitted
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Eiji Ota

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MathWorks Japan
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09 Jul 2012 Screenshot Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota mathematics, image processing, particle filter, please anyone can pro... 163 47
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17 Apr 2012 Screenshot Introduction to Statistical Analysis (Japanese) Demo files used in the Japanese webinar: Introduction to Statistical Analysis Author: Eiji Ota 15 0
Comments and Ratings by Eiji View all
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28 Jul 2014 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota

Compared with particle filter, Kalman filter is relatively light algorithm.

If the object moves really really fast, fining object frame by frame might be an idea...

05 Nov 2013 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota

Would let me know the version of MATLAB you use? I've heard 64bit version of old MATLAB cannot handle video properly.

01 Apr 2013 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota

Sorry for poorly commented code...

"Xstd_rgb" means standard deviation of observation noise, which means noise you get when you observe the state of something.

"Xstd_pos" and "Xstd_vec" mean standard deviation of system noise, which describes how far actual movement of target object differs from the ideal model (in this case, linear uniform motion).

State space become of 2 componets, one is "position of particle" and another is "speed of particle".

You can define these 3 types of noise by these parameters.

11 Mar 2013 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota

I made this program based on several books written in Japanese. There's no paper related to this demo. Sorry...

You can find several papers or tutorial documents if you search internet by these keywords, "particle filter", "color tracking", "condensation".

06 Mar 2013 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota

Computer Vision System Toolbox now supports Kalman filter.

http://www.mathworks.com/help/vision/ref/vision.kalmanfilterclass.html

http://www.mathworks.com/help/vision/examples/using-kalman-filter-for-object-tracking.html

If you want to track object using Kalman filter, Computer Vision System Toolbox could be an answer.

But, if you want to know how Kalman filter works, I do not have any good example for Kalman filter. Sorry...

Comments and Ratings on Eiji's Files View all
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05 Oct 2014 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota Heidaryan, Azim

what is a reference implementation (eg, paper).

28 Jul 2014 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota Ota, Eiji

Compared with particle filter, Kalman filter is relatively light algorithm.

If the object moves really really fast, fining object frame by frame might be an idea...

27 Jul 2014 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota Sampada

How to modify this code to detect and track objects which are very fast moving in a video?

06 May 2014 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota kumlu, deniz

First of all, thanks for sharing the code, it helps me a lot. I will ask question about parameters :
Xstd_rgb = 50;
Xstd_pos = 25;
Xstd_vec = 5;
How did you find the numbers like 50,25 and 5?
I want to generalize this for every color not spesific to red one. So, how can I start to modify this program ?

Thanks again.

05 Nov 2013 Simple Particle Filter Demo Tracking red object in a movie using particle filter. Author: Eiji Ota Ota, Eiji

Would let me know the version of MATLAB you use? I've heard 64bit version of old MATLAB cannot handle video properly.

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