Problems selecting color in action

Question

Hi,
I am trying to create an action that will select a color in a specific spot of an image, say top right corner, in order to delete that color. For example, if I have two portraits, one on a blue background and another on a green background, I need the action to select the color range of a specific spot, that way it doesn't matter what color the background is to begin with, and then delete it. As it stands, selecting the color range only records the RGB value in the action and not WHERE that color is found.
I found this discussion helpful but did not work completely. http://forums.adobe.com/message/2720472
Any tips are greatly appreciated. I have thousands of these images and would rather not make an action for each background color.
Thanks!

Answer 1

You could use a script to get and  select colour, this could be called as part of your action.
The following code is set up to select the colour range of the top right hand pixel with a fuzz of 16
main();
function main(){
if(!documents.length) return;
///////////Amend to suit X and Y positions in pixels////////////
//X = 10;
//Y = 10;
//to select top right corner
X = activeDocument.width.as('px')-1;
Y = 1;
app.activeDocument.colorSamplers.removeAll();
var xPos = new UnitValue( X,'px') ;
var yPos = new UnitValue( Y,'px' );
var mySampler = app.activeDocument.colorSamplers.add([xPos,yPos]);
var myColor = mySampler.color;
app.activeDocument.colorSamplers.removeAll();
selectColourRange( 16, myColor); //fuzz to suit
function selectColourRange( fuzz, solidColor){
var scaleA = (solidColor.lab.a + 128.5) / 256;
    var desc11 = new ActionDescriptor();
    desc11.putInteger( charIDToTypeID( "Fzns" ), fuzz );
        var desc12 = new ActionDescriptor();
        desc12.putDouble( charIDToTypeID( "Lmnc" ), solidColor.lab.l );
        desc12.putDouble( charIDToTypeID( "A   " ), solidColor.lab.a + scaleA);
        desc12.putDouble( charIDToTypeID( "B   " ), solidColor.lab.b + scaleA);
    desc11.putObject( charIDToTypeID( "Mnm " ), charIDToTypeID( "LbCl"), desc12 );
    desc11.putObject( charIDToTypeID( "Mxm " ), charIDToTypeID( "LbCl" ), desc12 );
executeAction( charIDToTypeID( "ClrR" ), desc11, DialogModes.NO );