URL import frame interval

[Henkka]

Hi all,

Im importing a series of pictures via network camera and creating a stack for further analysis. The problem is that the frame interval is not steady. My goal is to get constant 1 fps but the framerate changes from 1-~0.3 fps.

Im using this set of macro:

setBatchMode(true)

for (i=0;i<220;i++)
        {
        run("URL...", "url=http://xxx.xxx.x.xxx/jpg/image.jpg");
        wait(1000);
        }

setBatchMode("exit and display")

run ("Images to Stack", "title=image");

Any help is much appreciated!

-H

[Michael Schmid]

Hi Henkka,

if you don't need very high accuracy, my usual solution is  
calculating the time when I want to do some action minus the real  
time, and waiting for this time difference.

t=getTime();
for (i=0;i<220;i++) {
   run("URL...", "url=http://xxx.xxx.x.xxx/jpg/image.jpg");
   t+=1000;
   waitingTime = t-getTime();
   if (waitingTime>0) wait(waitingTime);
   else print("Too late by "+(-waitingTime)); //optional, show if  
it's too slow
}

Michael
________________________________________________________________

On 4 Mar 2010, at 14:40, Henkka wrote:

> Hi all,
>
> Im importing a series of pictures via network camera and creating a  
> stack
> for further analysis. The problem is that the frame interval is not  
> steady.
> My goal is to get constant 1 fps but the framerate changes from 1-
> ~0.3 fps.
>
> Im using this set of macro:
>
> setBatchMode(true)
>
> for (i=0;i<220;i++)
> {
> run("URL...", "url=http://xxx.xxx.x.xxx/jpg/image.jpg");
> wait(1000);
> }
>
> setBatchMode("exit and display")
>
> run ("Images to Stack", "title=image");
>
> Any help is much appreciated!
>
> -H

[Henkka]

Worked like a charm! Thanks for the advice Michael!

-H