Line Profile Tool

[niteman1946]

Hi Group,

I'm doing some diagnostics on vignetting and came across this handy tool in Images Plus.  I know that Maxim DL also provides something very similar.

Anyone know if PI has an equivalent?

Thanks,

Mark

[Nocturnal]

I wrote one but I need to attempt to rebuild it using the latest PCL.

https://www.youtube.com/watch?v=etH2bSPoGYc

Then there are all the platforms that need to be supported....

[oldwexi]

Hi Mark!
You can for example use PixelMath
to create a Profile.
See:
http://pixinsight.com/forum/index.php?topic=4973.0

simply 2 steps.
First PixelMath:
   pixel($T,xpos(),height($T)/2)
Second PixelMath:
  iif(abs((1-$T)*height($T)) > ypos(),0,$T)

Gerald
P.S.: i had ImagePlus, i have removed it...  with some other programs. PI has all you need. No softwarejumping anymore!

[niteman1946]

Thanks Sander and Gerald.

Gerald,
I thought about you when I posted.  I remember some of the analysis work you had shown.
I'm looking to be able to go "corner to corner" (i.e. diagonal).  Will your formulae produce that?

Mark

[Cosmick]

Anyone know if PI has an equivalent?

http://pixinsight.com/forum/index.php?topic=5742.msg39250#msg39250

[niteman1946]

Thanks Mick.

Nice script.

Mark

[oldwexi]

Hello Mike!
Yes, PixelMath can create and display also a diagonal Profile.
For example a Profile from bottom left to top right -
Only the first PixelMath Expression changes to:
   pixel($T,xpos(),height($T) - (xpos() * (height($T) / width($T))) )

The second Expression stays the same:
  iif(abs((1-$T)*height($T)) > ypos(),0,$T)

I do have many of this kind of macros in ONE xpsm Folder. At the beginning of each processing i drag and drop
this single macrofolder on the Workspace.
So i dont have to search for the PixelMath-, Starmask-, Stretching- etc. macros.

Gerald

[niteman1946]

Thanks Gerald.

You're the guru with pixelmath.

Mark