Blinking Script

[mmirot]

great !

[Silvercup]

Great. indeed

Silvercup

[sleshin]

Want to add my name to the list of the grateful. Very useful script.

Steve

[mmirot]

I think there is a bug. A I have problems selecting images. If I click a image in a directory it opens it.
I am not able to use windows standards : Select/ arrows, click Control, Control A

Also

How do you control display appearance ....STF?

Why do you need a preview?

Max

[NKV]

Hello Max.

I think there is a bug. A I have problems selecting images. If I click a image in a directory it opens it.
I am not able to use windows standards : Select/ arrows, click Control, Control A

It's not bug. It's PixInsight limitation:

How to move a ImageWindow via script

You can't, right now. A future version of PJSR will include a Workspace object, which will provide management of windows, icons and workspaces.

or how to enable move it by user when JS Dialog is open?

Impossible, since dialogs are modal windows. This means that they capture the keyboard and mouse blocking the rest of PixInsight's GUI.

How do you control display appearance ....STF?

Why do you need a preview?

See Instruction (long Version) http://pixinsight.com/forum/index.php?topic=1895.msg11738#msg11738

[mmirot]

Thanks
 Hard to get all the details. I will look forward to futures versions.

Max

[Silvercup]

Hi Nikolay and all developers:

Just a little trick to force a ImageWindow to place at top left workspace:

Code: [Select]


for(var i=0;i<11;++i) {
FinalView.zoomIn();
}
FinalView.fitWindow();
FinalView.show();
FinalView.zoomToOptimalFit();



FinalView in this case is the ImageWindow object.

Silvercup

[NKV]

Implement an automatic stretch feature in your script. This is actually much easier than what may seem at first glance.

I got the code.
But, for RGB images I have to generate statistics 3 times...   maybe possible to get statistics for all channels at ones?

[Carlos Milovic]

No. You may create an array of statistics objects, and apply them with a "for" loop (0 to numberOfChannels, or numberOfNominalChannels).

[NKV]

No. You may create an array of statistics objects, and apply them with a "for" loop (0 to numberOfChannels, or numberOfNominalChannels).

Thanks. Done:

Code: [Select]

#define shadowsClipping -1.25
#define targetBackground 0.25

function AutoSTF (img,rgbLinked)
{
   var n = img.image.numberOfChannels;
   if (rgbLinked || n == 1)
   {
      for ( var c = c0 = m = 0; c < n ; c++ )
      {
         img.image.selectedChannel = c;
         var s = new ImageStatistics (img.image);
         c0 += s.median + shadowsClipping*s.avgDev;
         m += s.median;
      }
      c0 /= n;
      m = Math.mtf(targetBackground , m/n - c0 );
      var STF =[[m,1,c0,0,1],[m,1,c0,0,1],[m,1,c0,0,1],[0.5,0, 1,0,1]];
   }
   else
   {
      var STF = new Array();
      for ( var c = 0; c < n ; c++ )
      {
         img.image.selectedChannel = c;
         s = new ImageStatistics (img.image);
         c0 = s.median + shadowsClipping*s.avgDev;
         m = Math.mtf(targetBackground , s.median - c0 );
         STF.push([m, 1, c0, 0, 1]);
      }
      STF.push([0.5,0,1,0,1]);
   }
   img.stf = STF ;
}

var img = ImageWindow.activeWindow.mainView;
//var rgbLinked = true;
var rgbLinked = false;
AutoSTF(img,rgbLinked);
Actually, I just copied part of code from ScreenTransferFunctionInterface.cpp
But I not understand why original STF and this PIJS produce little bit different result of midtones balance?


 

[Carlos Milovic]

Are the midtones input values close to 0.5? One way to interpret the MTF value is this: the number tells which pixel value should become middle gray. For just a inspection, I would pick something close to the image's median as MTF value.

[NKV]

Are the midtones input values close to 0.5? One way to interpret the MTF value is this: the number tells which pixel value should become middle gray. For just a inspection, I would pick something close to the image's median as MTF value.

I use ImageContainer to compare results.
Script above result:
STF = [ // c0, c1, m, r0, r1
      [0.15618, 1.00000, 0.32282, 0.00000, 1.00000],
      [0.08093, 1.00000, 0.30584, 0.00000, 1.00000],
      [0.10556, 1.00000, 0.25843, 0.00000, 1.00000],
      [0.00000, 1.00000, 0.50000, 0.00000, 1.00000]
   ];

PI STF (Auto Stretch with default parameter):
STF = [ // c0, c1, m, r0, r1
      [0.15618, 1.00000, 0.32281, 0.00000, 1.00000],
      [0.08093, 1.00000, 0.30579, 0.00000, 1.00000],
      [0.10556, 1.00000, 0.25842, 0.00000, 1.00000],
      [0.00000, 1.00000, 0.50000, 0.00000, 1.00000]
   ];

 

[NKV]

Next generation.
+AutoSTF
+FileList

[Niall Saunders]

Very nice wotk,

I like being able to expand the window 'vertically' (to be able to see more of the list entries), but it would also be nice to expand 'horizontally' to see more of the filenames (mine tend to be rather long, and the numeric ID tends to be at the far right!!)

I need to have a look at how you are applying the AutoSTF - it would be nice to be able to 'control' the STF (even if this means doing so whilst the animation is 'stopped')

I threw 60 images (746x577, mono) into the list and at full speed it was just a pleasant 'blur' - very impressive.

I also wondered about being able to use the mousewheel to 'scroll' through the listed images. At the moment, the mousewheel affects the zoom. I don't know which function is more suited to wheel actions, zoom or image-select?

Juan, I think this deserves inclusion with v1.6.1

Cheers,

[NKV]

I like being able to expand the window 'vertically' (to be able to see more of the list entries), but it would also be nice to expand 'horizontally' to see more of the filenames (mine tend to be rather long, and the numeric ID tends to be at the far right!!)

Yes, I will modify.

I also wondered about being able to use the mousewheel to 'scroll' through the listed images. At the moment, the mousewheel affects the zoom. I don't know which function is more suited to wheel actions, zoom or image-select?

Niall, just move mouse cursor to FileList and use mousewheel