Black pixels on some colors

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  Alexander,

  You can try the list.

  The following is a general list of things you can try when the question is not in a specific file and when it is not caused by problems with opening a file from external media, see below. You tried/made some of them already; 1 and 2) are easier for temporary strangenesses and 3) and 4) specifically preferences might be corrupt); ((5) is a list in itself and 6) is the last resort.

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  Hello

  I want to build a script that can check a Photoshop file and:

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  -for each black pixel, looking for an another black pixel at a maximum distance of 5 pixels

  -then draw a line between the two black pixels.

  I wrote this script below (my first script...), but it's VERY slow (and my final image is VERY large), I think because I test the color for each pixel in the image.

  So an alternative would be to select a black pixel with the wand, then the script record all the details of the selected pixels, then my script wil test only the pixels (less than 1% of the pixels are black in my image).

  Is this possible with JavaScript?

  Thank you for your answer!

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  function main(){
   var startRulerUnits = app.preferences.rulerUnits;
   app.preferences.rulerUnits = Units.PIXELS;
  
  
   var myHeight = app.activeDocument.height;
   var myWidth = app.activeDocument.width;
  
  
  // Find black pixel
   for(var i=5; i<myWidth; i++) {
    for(var j=5; j<myHeight; j++) {
     activeDocument.colorSamplers.removeAll()
     var sampler = activeDocument.colorSamplers.add([new UnitValue (i, 'px'), new UnitValue (j, 'px')]);
     if (sampler.color.rgb.hexValue === "000000") {
  
  
  // For each black pixel, search another black pixel below left up to 5 pixels
      for (var m=i-5; m<i; m++) {
       for (var n=j+1; n<j+5; n++) {
        activeDocument.colorSamplers.removeAll()
        var test = activeDocument.colorSamplers.add([new UnitValue (m, 'px'), new UnitValue (n, 'px')]);
        if (test.color.rgb.hexValue === "000000") {
  
  
  // Then draw a black line between the two black pixels
         var FillColour = new SolidColor;
         FillColour.rgb.hexValue = '000000';
         var ad=activeDocument;
         ad.selection.select([[m,n],[i,j],[m,n+1],[i,j+1]], SelectionType.REPLACE, 0, true);
         ad.selection.fill(FillColour);
         ad.selection.deselect()
        }
       }
  
  
  // For each black pixel, search another black pixel below right up to 5 pixels
       for (var m=i+1; m<i+5; m++) {
        for (var n=j; n<j+5; n++) {
         activeDocument.colorSamplers.removeAll()
         var test = activeDocument.colorSamplers.add([new UnitValue (m, 'px'), new UnitValue (n, 'px')]);
         if (test.color.rgb.hexValue === "000000") {
  
  
  // Then draw a black line between the two black pixels
          var FillColour = new SolidColor;
          FillColour.rgb.hexValue = '000000';
          var ad=activeDocument;
          ad.selection.select([[i,j],[m,n],[m,n+1],[i,j+1]], SelectionType.REPLACE, 0, true);
          ad.selection.fill(FillColour);
          ad.selection.deselect()
         }
        }
       }
      }
     }
    }
   }
  }
  main();
  
  

  If someone wants to do the same thing, the ImageJ software works very well on very large images (1 billion pixels) by the process according to > binary > close

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  I wrote a script to retrieve all documents in a new Photoshop file and place each file/shape on its own layer.

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  Thanks for posting in the Microsoft Community.

  According to the description of the problem you found the black screen on some websites. I'll be happy to help you on this question.

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  Step 2: If the problem is solved in safe mode, then I suggest you perform the clean boot and remove the program that is causing the problem.

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  Please keep me informed of the progress of things.

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