Tracking a particle

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Tracking a particle

user #123
Hi!
I have a .avi file containing a video with a moving particle, which I need to track so as to extract the x-y coordinates.
Is it possible to do this with ImageJ? Since I have one file only, I can do it manually. Which tools shold I use?
When I open the file it sometimes tells me I need Huffman tablesWhat are they? How can I fix this issue?
Moreover, since I have a video, can I import it by getting the single frames? Once I click on the moving particle (which is the best tool?) is it possible to automatically advance to the next frame?
Many thanks in advance!
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Re: Tracking a particle

Michael Schmid
Hi anonymous user,

if you upgrade to the latest version of imageJ you should be able to read MJPEG-encoded avi files that have no Huffman tables.
Menu: Help>Update ImageJ

If you have only one particle you could simply try 'Find Maxima' with a large noise tolerance to get its coordinates. Otherwise there are several plugins for particle tracking. Google&Co or searching the mailing list archives should help you.

Michael
________________________________________________________________
On Jan 26, 2012, at 13:31, user #123 wrote:

> Hi!
> I have a .avi file containing a video with a moving particle, which I need
> to track so as to extract the x-y coordinates.
> Is it possible to do this with ImageJ? Since I have one file only, I can do
> it manually. Which tools shold I use?
> When I open the file it sometimes tells me I need Huffman tablesWhat are
> they? How can I fix this issue?
> Moreover, since I have a video, can I import it by getting the single
> frames? Once I click on the moving particle (which is the best tool?) is it
> possible to automatically advance to the next frame?
> Many thanks in advance!
>
> --
> View this message in context: http://imagej.1557.n6.nabble.com/Tracking-a-particle-tp4340566p4340566.html
> Sent from the ImageJ mailing list archive at Nabble.com.
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Re: Tracking a particle

user #123
I will update ImageJ to fix the MPEG issue and will have a look on Google for plugins
Many thanks for your indications
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Re: Tracking a particle

Knecht, David
In reply to this post by user #123
On Jan 26, 2012, at 12:31 PM, user #123 wrote:

Hi!
I have a .avi file containing a video with a moving particle, which I need
to track so as to extract the x-y coordinates.
Is it possible to do this with ImageJ? Since I have one file only, I can do
it manually. Which tools shold I use?
I find mTrackJ to be a very useful tool for manually tracking particles.  You will find it on the plugins page of ImageJ and http://www.imagescience.org/meijering/software/mtrackj/
When I open the file it sometimes tells me I need Huffman tablesWhat are
they? How can I fix this issue?
Moreover, since I have a video, can I import it by getting the single
frames?
Quicktime allows you to export a tiff series from a movie.  That is how we usually do it, but there are probably other ways.
Once I click on the moving particle (which is the best tool?) is it
possible to automatically advance to the next frame?
mTrackJ will do that be default and it is an option that can be turned off and on.
Many thanks in advance!

--
View this message in context: http://imagej.1557.n6.nabble.com/Tracking-a-particle-tp4340566p4340566.html
Sent from the ImageJ mailing list archive at Nabble.com<http://Nabble.com>.

Professor David Knecht
Beatson Institute for Cancer Research
Switchback Road, Bearsden
Glasgow Scotland G61 1BD
UK




Professor David Knecht
Beatson Institute for Cancer Research
Switchback Road, Bearsden
Glasgow Scotland G61 1BD
UK
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Re: Tracking a particle

user #123
Thanks for the suggestions!

One question: so far, I can load only 410 frames at time. Is it possible to add more frames in one sequence?