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AG_Ps_100
AG_Ps_100
Inspiring
February 10, 2019
Answered

Remove minor subpaths - Subtract small selections

  • February 10, 2019
  • 2 replies
  • 3969 views

Hello everyone,

I have an image where I selected the green screen using color range. Sometimes I have greens inside my object so they will be deleted, and I try to avoid that.

So I created a layer mask (in the same way it can be a selection).

original picture:

created a mask (isolated the background):

show the mask:

(as you see my object isn't entirely white)

I've scripted a MagicWand click on the middle of the canvas, because my subject is almost always in the middle.

so right now I'm here:

How do I make all the small selections inside it merge into one? (I thought of a script that finds all the subpaths inside a selection and then removes them)

Any help will be much appreciated

This topic has been closed for replies.
Correct answer AG_Ps_100

i found that you and r-bin already answered me for something else that does the same thing! (thank you again)

i'll share it for others to use as well

select_max_selection(); 
     
     
    function select_max_selection() 
        { 
        try { 
            // selection to workpath 
            var d = new ActionDescriptor(); 
            var r = new ActionReference(); 
            r.putClass(stringIDToTypeID("path")); 
            d.putReference(stringIDToTypeID("null"), r); 
            var r1 = new ActionReference(); 
            r1.putProperty(stringIDToTypeID("selectionClass"), stringIDToTypeID("selection")); 
            d.putReference(stringIDToTypeID("from"), r1); 
            d.putUnitDouble(stringIDToTypeID("tolerance"), stringIDToTypeID("pixelsUnit"), 0.5); 
            executeAction(stringIDToTypeID("make"), d, DialogModes.NO); 
     
            // leave only one subpath with maximum points; 
            var d = new ActionDescriptor(); 
            var r = new ActionReference(); 
            r.putEnumerated(stringIDToTypeID("path"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
     
            var pth = executeActionGet(r).getObjectValue(stringIDToTypeID("pathContents"));           
            var lst = pth.getList(stringIDToTypeID("pathComponents"));           
     
            var list = new ActionList();               
            var len = lst.count; 
     
            var max; 
            var max_obj; 
     
            for (var i = 0; i < len; i++) 
                { 
                var obj = lst.getObjectValue(i); 
     
                var count = obj.getList(stringIDToTypeID("subpathListKey")).getObjectValue(0).getList(stringIDToTypeID("points")).count; 
     
                if (!max || max < count) 
                    { 
                    max = count; 
                    max_obj  = obj; 
                    } 
                } 
     
            max_obj.putEnumerated(stringIDToTypeID("shapeOperation"), stringIDToTypeID("shapeOperation"), stringIDToTypeID("add") ); 
            list.putObject(stringIDToTypeID("pathComponent"), max_obj);           
     
            var r = new ActionReference(); 
            r.putProperty( charIDToTypeID( "Path" ), charIDToTypeID( "WrPt" ) ); 
     
            d.putReference( stringIDToTypeID( "null" ), r ); 
            d.putList(charIDToTypeID("T  "), list); 
     
            executeAction(charIDToTypeID("setd"), d, DialogModes.NO); 
     
            // workpath to selection 
     
            var d = new ActionDescriptor();   
            var r = new ActionReference();   
            r.putProperty(stringIDToTypeID("channel"), stringIDToTypeID("selection"));   
            d.putReference(stringIDToTypeID("null"), r);   
            var r1 = new ActionReference();   
            r1.putProperty(stringIDToTypeID("path"), stringIDToTypeID("workPath"));   
            d.putReference(stringIDToTypeID("to"), r1);   
           
            d.putBoolean(stringIDToTypeID("antiAlias"), true);   
            d.putUnitDouble(stringIDToTypeID("feather"), stringIDToTypeID("pixelsUnit"), 0);   
           
            executeAction(stringIDToTypeID("set"), d, DialogModes.NO);   
     
            // delete workpath 
     
            var doc = app.activeDocument; 
     
            for (var i = 0; i < doc.pathItems.length; i++) 
                { 
                if (doc.pathItems.kind == PathKind.WORKPATH) 
                    { 
                    doc.pathItems.remove(); 
                    break; 
                    } 
                } 
            } 
        catch(e) { alert(e); } 
}

2 replies

R
r-bin
Legend
February 10, 2019

You can turn the selection into a path.
Change the mode of all subpaths to "Combine". And turn the path back into a selection.

Kukurykus
Kukurykus
Legend
February 11, 2019

Actually 'Merge Shape Components' instead of 'Combine Shapes', but that was what you meant

R
r-bin
Legend
February 11, 2019

No, I meant precisely "Combine" ("shapeOperation" -> "add")

Kukurykus
Kukurykus
Legend
February 10, 2019

Actually it's easy. Change your selection to pathItems, then make a loop over all subpaths, and store only the biggest one (or that with the most amount of anchors). Then from those points make a selection. That's all.

You can use also: EZ Green Screen - Photoshop Plugin Software

AG_Ps_100
AG_Ps_100Author
Inspiring
February 10, 2019

1. "Actually it's easy. Change your selection to pathItems, then make a loop over all subpaths, and store only the biggest one (or that with the most amount of anchors). Then from those points make a selection. That's all." - sounds great! I just need help to execute this.

2. EZ Green Screen seems nice, but color range does good job for now before i pay the $200


    AG_Ps_100
    AG_Ps_100AuthorCorrect answer
    Inspiring
    February 10, 2019

    i found that you and r-bin already answered me for something else that does the same thing! (thank you again)

    i'll share it for others to use as well

    select_max_selection(); 
         
         
        function select_max_selection() 
            { 
            try { 
                // selection to workpath 
                var d = new ActionDescriptor(); 
                var r = new ActionReference(); 
                r.putClass(stringIDToTypeID("path")); 
                d.putReference(stringIDToTypeID("null"), r); 
                var r1 = new ActionReference(); 
                r1.putProperty(stringIDToTypeID("selectionClass"), stringIDToTypeID("selection")); 
                d.putReference(stringIDToTypeID("from"), r1); 
                d.putUnitDouble(stringIDToTypeID("tolerance"), stringIDToTypeID("pixelsUnit"), 0.5); 
                executeAction(stringIDToTypeID("make"), d, DialogModes.NO); 
         
                // leave only one subpath with maximum points; 
                var d = new ActionDescriptor(); 
                var r = new ActionReference(); 
                r.putEnumerated(stringIDToTypeID("path"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
         
                var pth = executeActionGet(r).getObjectValue(stringIDToTypeID("pathContents"));           
                var lst = pth.getList(stringIDToTypeID("pathComponents"));           
         
                var list = new ActionList();               
                var len = lst.count; 
         
                var max; 
                var max_obj; 
         
                for (var i = 0; i < len; i++) 
                    { 
                    var obj = lst.getObjectValue(i); 
         
                    var count = obj.getList(stringIDToTypeID("subpathListKey")).getObjectValue(0).getList(stringIDToTypeID("points")).count; 
         
                    if (!max || max < count) 
                        { 
                        max = count; 
                        max_obj  = obj; 
                        } 
                    } 
         
                max_obj.putEnumerated(stringIDToTypeID("shapeOperation"), stringIDToTypeID("shapeOperation"), stringIDToTypeID("add") ); 
                list.putObject(stringIDToTypeID("pathComponent"), max_obj);           
         
                var r = new ActionReference(); 
                r.putProperty( charIDToTypeID( "Path" ), charIDToTypeID( "WrPt" ) ); 
         
                d.putReference( stringIDToTypeID( "null" ), r ); 
                d.putList(charIDToTypeID("T  "), list); 
         
                executeAction(charIDToTypeID("setd"), d, DialogModes.NO); 
         
                // workpath to selection 
         
                var d = new ActionDescriptor();   
                var r = new ActionReference();   
                r.putProperty(stringIDToTypeID("channel"), stringIDToTypeID("selection"));   
                d.putReference(stringIDToTypeID("null"), r);   
                var r1 = new ActionReference();   
                r1.putProperty(stringIDToTypeID("path"), stringIDToTypeID("workPath"));   
                d.putReference(stringIDToTypeID("to"), r1);   
               
                d.putBoolean(stringIDToTypeID("antiAlias"), true);   
                d.putUnitDouble(stringIDToTypeID("feather"), stringIDToTypeID("pixelsUnit"), 0);   
               
                executeAction(stringIDToTypeID("set"), d, DialogModes.NO);   
         
                // delete workpath 
         
                var doc = app.activeDocument; 
         
                for (var i = 0; i < doc.pathItems.length; i++) 
                    { 
                    if (doc.pathItems.kind == PathKind.WORKPATH) 
                        { 
                        doc.pathItems.remove(); 
                        break; 
                        } 
                    } 
                } 
            catch(e) { alert(e); } 
    }
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