Posted by
Gary Sellani on
Jun 11, 2011; 3:11am
URL: http://imagej.273.s1.nabble.com/Motion-tracking-algorithm-tp3684268p3684280.html
Frame comparison works for very large moving objects, but can't track
small moving objects. Once you crank up the sensitivity, noise is the
culprit.
It would probably pay to do a good search to see if this code exists
since there are at least 10 programs I've come across that do simple
frame comparison. None met my needs, which may be more difficult than
what you are trying to accomplish.
I uninstalled most of them, but kept
http://www.yawcam.com/http://www.trackercam.com/TCamWeb/index.htmHandiavi is supposed to handle meteor detection, but I didn't find it
much better than the other programs.
>
http://www.azcendant.com/Meteor%20Capture.htmI had no luck getting Zoneminder to install, but that is a well known
motion detection program.
Of the papers published, most use some variant of the Hough transform.
On 6/10/2011 7:24 PM, mamech wrote:
> Gary Sellani wrote:
>>
>> I have played with a number of motion detection programs, though I haven't
>> tried tracking (PTZ minus Z) All the ones I have tested leave a lot to be
>> desired. Part of the problem is CCDs will have some noise, so frame by
>> frame comparison is not as easy as you think. Some average frames to
>> reduce noise. They all have a slider to set the sensitivity.
>>
>
> Sorry, but frame comparison is easy as I think : ) I have tested it using a
> program that I wrote it in java, and it worked.
>
>
>
> Gary Sellani wrote:
>>
>>
>> Check out the VLC player, AKA videolan. They have a tracking plugin on
>> that detects objects moving in the image. I think the plugins are open
>> source.
>>
>> If you get serious about this, please start a sourceforge entry or some
>> other place to store code. I'm certainly willing to beta test. Well
>> assuming I can interface my frame grabber to imagej. ;-)
>>
>>
>
> I have tested the plugin of the vlc player as you said and I have 2 problems
> with it:
>
> 1- I think it also uses frame comparison algorithm, so if both the cam and
> the target moves, then this algorithm will feel as if everything in the
> scene moves. Actually there are better programs for this than vlc I think.
>
> 2- This is from vlc forums:
> "You use it by adding "--video-filter motion" to your command line and it'll
> draw white rectangles around the moving areas in the video. The algorithm
> might be a bit buggy and i sure would appreciate if someone could test it
> some more and provide feedback."
>
>
> I am quiet sure that there is smoe algorithm used for motion detection of
> certain object when both target
> and camera are moving
>
> --
> View this message in context:
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>