JS/PS CS3: identify single pixels sticking out

This may sound like a stupid question, but will this always be black and white for the colors?

Also, from your example, if you look at the large vertical section there is one stray black pixel on the right side. There are also 2 stray white pixels in the upper left and lower right corners. Are you looking to take care of those also? I guess I'm just wondering exactly what would make a pixel stray or not stray.

Just a theory..

If it is a rectangle shape you might be able to :-

Select the area

Get the selection bounds

Make a work path set to 1 (One of the bounds should be one less than the selection bounds) also check that there is only 4 pathpoints.

Then compare each bound, then you could make a new selection and fill.

Peter, I don't know a method for working with a bitmap image. (there is NO histogram in bitmap mode) Would you be able to switch modes to grayscale and back? If so then this may work although Im NOT sure if I've overlooked something here. I only tested with a small file. I would not expect this kind of thing to be fast.

$.sleep(500); & WaitForRedraw(); can come out there just so I can see whats happening in the GUI.

#target photoshop

app.bringToFront();

function main() {

if (app.documents.length == 0) {

alert('You have NO document open?');

return;

}

var whiteRef = new SolidColor();

whiteRef.rgb.red = 255;

whiteRef.rgb.green = 255;

whiteRef.rgb.blue = 255;

var docRef = app.activeDocument;

with (docRef) {

// Horizontal selection

selection.select([[0, 0], [width , 0], [width, 1], [0, 1]]);

if (channels[0].histogram[0] == 1) {

alert('Single Pixel');

selection.fill(whiteRef);

}

for (var i = 0; i < height-1; i++) {

selection.translateBoundary(0, 1);

$.sleep(500);

WaitForRedraw();

if (channels[0].histogram[0] == 1) {

alert('Single Pixel');

selection.fill(whiteRef);

}

}

// Vertical selection

selection.select([[0, 0], [1 , 0], [1, height], [0, height]]);

if (channels[0].histogram[0] == 1) {

alert('Single Pixel');

selection.fill(whiteRef);

}

for (var i = 0; i < width-1; i++) {

selection.translateBoundary(1, 0);

$.sleep(500);

WaitForRedraw();

if (channels[0].histogram[0] == 1) {

alert('Single Pixel');

selection.fill(whiteRef);

}

}

selection.deselect();

}

};

main();

// Redraw the Screen

function WaitForRedraw() {

  var eventWait = charIDToTypeID('Wait');

  var enumRedrawComplete = charIDToTypeID('RdCm');

  var typeState = charIDToTypeID('Stte');

  var keyState = charIDToTypeID('Stte');

  var desc = new ActionDescriptor();

  desc.putEnumerated(keyState, typeState, enumRedrawComplete);

  executeAction(eventWait, desc, DialogModes.NO);

}