pattern identification and classification of an image sequence

[paul_rostand]

Hello Imagej users,

 

I am just starting in image processing field. I recorded a process with a camera. The process is characterized by the appearance of a dark  area in a very bright one. The position , the size and the shape of the dark area is variable. My aim is to identify a set of pictures I can use to describe and characterize the process by evaluating the number of pictures in the sequence that are looking similar to each type of picture of the set. 

 I have already identified the set of picture. As criteria, I took the position and the size of the dark area.

to obtain the position, used the following funtion:

-smooth

-find edges

.binary-theshold

invert 

-find maxima within a certain noise tolerance.

Now  I would like to implement a macro to classfy my sequence according to the similarity with each pictures of the set.

 One example of conclusion I am looking for is for example" in a sequence of 20 pictures, and a set of 3 pictures taken as samples, 12 are similar to sample1, 3 to sample2 and 5 to sample 3"

My question is doea anyone help me to define which criteria I should used to loop inside the sequence for a comparison? 

-I tried to plot the profile for  each sample and compare it with the profile of each picture of the sample but the samples profiles are too similar so I can used the profile as criteria.

.- the second Idea was to find the minima/maxima in each picture and compare the position with the position in each sample this does not work because the aim is to identify an area not a point.

-third Idea, to track the shape of the dark area for each picture and compare with the samples, but the dark area shape and position are not so stable and I dont know how to define a tolerance for comparison.

can anyone offer me a suitable solution, any idea is welcomed

thank in advance

Paul Rostand

when I tried the command

 File<<open....

 

I got the error message plugin reader not found

after looking in the forum I knew about the plugin jimi reader and jimi writer. after dowloading and installing the plugins when I tried the command

 

run ("Jimi Reader", "open.....

 

I got the error message

 

<<Java.lang illegal state operation

 

can someone helps??

thanks in advance

regards

 

Paul Rostand

 

 

[Peter Haub]

Hi Paul,
"looking similar" means what? Can you give an example?

Would it be a solution to calculate the correlation of each pair of dark
area objects after centering and align the objects according to their
major axis.

Regards,
Peter

Am 02.05.2011 21:52, schrieb paul_rostand:

> Hello Imagej users,
>
> I am just starting in image processing field. I recorded a process with a
> camera. The process is characterized by the appearance of a dark  area in a very
> bright one. The position , the size and the shape of the dark area is variable.
> My aim is to identify a set of pictures I can use to describe and characterize
> the process by evaluating the number of pictures in the sequence that are
> looking similar to each type of picture of the set.
>   I have already identified the set of picture. As criteria, I took the position
> and the size of the dark area.
> to obtain the position, used the following funtion:
> -smooth
> -find edges
> .binary-theshold
> invert
> -find maxima within a certain noise tolerance.
>
> Now  I would like to implement a macro to classfy my sequence according to the
> similarity with each pictures of the set.
>
>   One example of conclusion I am looking for is for example" in a sequence of 20
> pictures, and a set of 3 pictures taken as samples, 12 are similar to sample1, 3
> to sample2 and 5 to sample 3"
>
>
> My question is doea anyone help me to define which criteria I should used to
> loop inside the sequence for a comparison?
>
> -I tried to plot the profile for  each sample and compare it with the profile of
> each picture of the sample but the samples profiles are too similar so I can
> used the profile as criteria.
> .- the second Idea was to find the minima/maxima in each picture and compare the
> position with the position in each sample this does not work because the aim is
> to identify an area not a point.
> -third Idea, to track the shape of the dark area for each picture and compare
> with the samples, but the dark area shape and position are not so stable and I
> dont know how to define a tolerance for comparison.
>
> can anyone offer me a suitable solution, any idea is welcomed
>
> thank in advance
>
> Paul Rostand
>
>
>
>
> when I tried the command
>   File<<open....
>
> I got the error message plugin reader not found
> after looking in the forum I knew about the plugin jimi reader and jimi writer.
> after dowloading and installing the plugins when I tried the command
>
>
> run ("Jimi Reader", "open.....
>
> I got the error message
>
> <<Java.lang illegal state operation
>
> can someone helps??
> thanks in advance
> regards
>
> Paul Rostand
>
> --
> View this message in context: http://imagej.588099.n2.nabble.com/pattern-identification-and-classification-of-an-image-sequence-tp6325099p6325099.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>