Remote controlling ImageJ via a socket?

[Joachim Wesner]

Hi listers,

I´m still considering the different possibilities to use ImageJ as an
external "processor" for another App.

One idea clearly is to use the macro and batch options. However, this has
some disadvantages,
one being that when repeatedly doing this, ImageJ will be restarted all
over again any time, which will
make processing slow.

So I was wondering, another option would be to have ImageJ already running
from the start and
send "commands" to ImageJ via a network socket. What exactly a command is,
would need to be
defined, however I think that re-using Albert Cardonas CLI interface that
relies on macro language
would be a very valid option.

So, has anybody already done something similar? Any suggestions?

Joachim


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[dscho]

Hi Joachim,

On Fri, 23 Oct 2009, Joachim Wesner wrote:

> I´m still considering the different possibilities to use ImageJ as an
> external "processor" for another App.
>
> One idea clearly is to use the macro and batch options. However, this
> has some disadvantages, one being that when repeatedly doing this,
> ImageJ will be restarted all over again any time, which will make
> processing slow.
>
> So I was wondering, another option would be to have ImageJ already
> running from the start and send "commands" to ImageJ via a network
> socket. What exactly a command is, would need to be defined, however I
> think that re-using Albert Cardonas CLI interface that relies on macro
> language would be a very valid option.
>
> So, has anybody already done something similar? Any suggestions?

ImageJ optionally runs with a socket listener (in Fiji, it is on by
default, but it is not the regular socket listener, but an RMI-based one,
so it is safe enough).

With such a socket listener, starting ImageJ again with command line
options (such as -eval <commands>) will send the commands to the existing
instance.

Hth,
Dscho

[Joachim Wesner]

Hi Dscho,

thanx a lot, I was somehow aware of the "Socket listener" in ImageJ, but
from the docs
that I had see had the impression that it´s only used or useful to
synchronize multiple ImageJ
instances, not for sending commands. GREAT, I´currently taking a look at
the source code.

At that would be missing for my planned task would be a simple (C?)
frontend that can
be compiled into a standlaone exe that sends commands (maybe given as its
command line
args) to that socket.

I will start to make one if there is nothing already available.

Cheers

Joachim




                                                                           
             Johannes                                                      
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Hi Joachim,

On Fri, 23 Oct 2009, Joachim Wesner wrote:

> I´m still considering the different possibilities to use ImageJ as an
> external "processor" for another App.
>
> One idea clearly is to use the macro and batch options. However, this
> has some disadvantages, one being that when repeatedly doing this,
> ImageJ will be restarted all over again any time, which will make
> processing slow.
>
> So I was wondering, another option would be to have ImageJ already
> running from the start and send "commands" to ImageJ via a network
> socket. What exactly a command is, would need to be defined, however I
> think that re-using Albert Cardonas CLI interface that relies on macro
> language would be a very valid option.
>
> So, has anybody already done something similar? Any suggestions?

ImageJ optionally runs with a socket listener (in Fiji, it is on by
default, but it is not the regular socket listener, but an RMI-based one,
so it is safe enough).

With such a socket listener, starting ImageJ again with command line
options (such as -eval <commands>) will send the commands to the existing
instance.

Hth,
Dscho



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