the expansion stop sign...

I recently wrote a script that samples 4 points the upper-left corner of an image, and then use their RGB color values select the entire background. The purpose of this is so that later in action (but not in the present text) selection can be reversed and transformed into a new layer.

Taken as a whole the process essentially removes this background of an image. But, it only works if the color in the upper left corner are representative of all the background and the background is quite uniform.

I write this for 3 reasons:

(1) in case someone finds it or parts of it useful

(2) in case anyone has any suggestions on how the script could be improved... specifically I want berries could be assembled more concise?

3) because every time I play the script slows down my info panel (normally closed) open as it creates the color swatches and it drives me crazy. Is there any type of option .dialogsNO can I put it somewhere here to prevent that from happening? Or if not is there something I can add at the end of the script to close?

#target photoshop 
var doc = app.activeDocument 
doc.colorSamplers.removeAll(); 

var samp1 = doc.colorSamplers.add([1,1]); 
var samp1R = samp1.color.rgb.red; 
var samp1G = samp1.color.rgb.green; 
var samp1B = samp1.color.rgb.blue;

var samp2 = doc.colorSamplers.add([15,1]); 
var samp2R = samp2.color.rgb.red; 
var samp2G = samp2.color.rgb.green; 
var samp2B = samp2.color.rgb.blue;

var samp3 = doc.colorSamplers.add([1,15]); 
var samp3R = samp3.color.rgb.red; 
var samp3G = samp3.color.rgb.green; 
var samp3B = samp3.color.rgb.blue;

var samp4 = doc.colorSamplers.add([15,15]); 
var samp4R = samp4.color.rgb.red; 
var samp4G = samp4.color.rgb.green; 
var samp4B = samp4.color.rgb.blue;

var reds = new Array;
var greens = new Array;
var blues = new Array;

reds.push([samp1R],[samp2R],[samp3R],[samp4R]);
greens.push([samp1G],[samp2G],[samp3B],[samp4G]);
blues.push([samp1B],[samp2B],[samp3B],[samp4B]);

redsMax = Math.max.apply(Math, reds);
greensMax = Math.max.apply(Math, greens);
bluesMax = Math.max.apply(Math, blues);

redsMin = Math.min.apply(Math, reds);
greensMin = Math.min.apply(Math, greens);
bluesMin = Math.min.apply(Math, blues);

//-----------KEY ADUSTMENTS----------//
tolerance = 25;
fuziness = 40;
//-----------KEY ADUSTMENTS----------//

redsMaxAdjusted = redsMax - (tolerance/5);
greensMaxAdjusted = greensMax- (tolerance/5);
bluesMaxAdjusted = bluesMax- (tolerance/5);

redsMinAdjusted = redsMin - tolerance;
greensMinAdjusted = greensMin - tolerance;
bluesMinAdjusted = bluesMin- tolerance;

app.activeDocument.suspendHistory ("autoSelect", "selectColorRange( redsMinAdjusted, greensMinAdjusted, bluesMinAdjusted, redsMaxAdjusted, greensMaxAdjusted, bluesMaxAdjusted, fuziness )");

function selectColorRange (minR, minG, minB, maxR, maxG, maxB, fuzz) {
var idClrR = charIDToTypeID( "ClrR" );
    var desc4 = new ActionDescriptor();
    var idFzns = charIDToTypeID( "Fzns" );
    desc4.putInteger( idFzns, fuzz );
    var idMnm = charIDToTypeID( "Mnm " );
        var desc5 = new ActionDescriptor();
        var idR = charIDToTypeID( "Rd  " );
        desc5.putDouble( idR, minR );
        var idG = charIDToTypeID( "Grn " );
        desc5.putDouble( idG, minG );
        var idB = charIDToTypeID( "Bl  " );
        desc5.putDouble( idB, minB );
    var idRGCl = charIDToTypeID( "RGBC" );
    desc4.putObject( idMnm, idRGCl, desc5 );
    var idMxm = charIDToTypeID( "Mxm " );
        var desc6 = new ActionDescriptor();
        var idR = charIDToTypeID( "Rd  " );
        desc6.putDouble( idR, maxR );
        var idG = charIDToTypeID( "Grn " );
        desc6.putDouble( idG, maxG );
        var idB = charIDToTypeID( "Bl  " );
        desc6.putDouble( idB, maxB );
    var idRGCl = charIDToTypeID( "RGBC" );
    desc4.putObject( idMxm, idRGCl, desc6 );
    var idcolorModel = stringIDToTypeID( "colorModel" );
    desc4.putInteger( idcolorModel, 0 );
executeAction( idClrR, desc4, DialogModes.NO );
};

You could add...

app.runMenuItem (stringIDToTypeID ('closeInfoPanel'));

This should then close the Info Panel.

Tags: Photoshop

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