I originally posted this in the Photoshop Mac forum and it was suggested I post here for some help.
I'm rendering out a large-ish print piece (7500x5000pixel HDR) in my 3D app, Cinema 4D. It has a feature called Tiled Camera that chops the scene into a number of tiles and sends each one to a network render client. This is considerably faster than one machine doing the entire frame.
The problem is that I have to manually combine all the image tiles in Photoshop once its done. Yeah, it's kinda clunky. The tile camera doesn't have any overlap between adjacent tiles, so Photomerge doesn't have any pixels to line up.
Depending on the project, there might be 9 tiles or there might be 1000. The number of rows and columns always = √"total # of images". All tiles are the same size. The final image length would be (√"total # of images" * "one tile X width in pixels"). Likewise, height would be (√"total # of images" * "one tile Y height in pixels"). The Tile Camera renders across first then down, so it seems like the process would be "easy" to automate.
It would be cool if the script would auto recognize the number of images and calculate the final canvas size using the above math. But even if a user has to manually input those variables, that would still save hours of hand assembly work.
If anyone feels exceptionally generous and daring, I attached a folder of JPEGs rendered out by the Tile Camera.
Here's how it should look when assembled:
I'd really appreciate any time someone could devote to this.
1 Correct answer
I have just tried with Photoshop CS3 and Tiger and no prompts/errors.
I wonder if you have tried resetting your preferences?
If that doesn't work you could try adding this line at the top of the script..
app.displayDialogs = DialogModes.NO;
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Could Scott or Navarro please test this code as I have made a slight adjustment to the code and it seems to be much faster as it now merges every three SOs.
It may now be useful 
#target photoshop
app.bringToFront();
main();
function main(){
if(!documents.length) return;
try{
var startRulerUnits = preferences.rulerUnits;
preferences.rulerUnits = Units.PIXELS;
var SOLayers = getNamesPlusIDs();
for( var b in SOLayers){
//Remove non SO layers
if(SOLayers[2].toString() != "false") continue;
deleteLayerByID(Number(SOLayers[0]));
}
activeDocument.activeLayer = activeDocument.layers[activeDocument.layers.length-1];
if(activeDocument.activeLayer.isBackgroundLayer){
activeDocument.activeLayer.name="Background";
}
SOLayers = getNamesPlusIDs();
//extract all layers and put them into the main document.
//Then remove the SO.
for( var a in SOLayers){
//Only work on SO layers
if(SOLayers[2].toString() != "true") continue;
var layerID = Number(SOLayers[0]);
selectLayerById(layerID);
selectArea();
var LB = getLayerBoundsByIndex( layerID);
openSO();
//creat....name;
activeDocument.activeLayer = activeDocument.artLayers.getByName(cName);
SelectWhite();
...//////////////////F U N C T I O N S
function mergeSameNamedLayers(){
//Get a list of the layer names
var layerNameList = getNamesPlusIDs();
//create an array for unique layer names
var uniqueName = new Array();
for(var s in layerNameList){
if(layerNameList[2] == "false") uniqueName.push( layerNameList[1].toString());
}
//now we should have unique layer names
uniqueName = UniqueSortedList( uniqueName ).sort();
//select all layers with the same name, merge them and set blendmode
var BlendMode = new String();
for ( var w in uniqueName){
deselectLayers();
for(var z in layerNameList){
if(uniqueName.toString() == layerNameList [1].toString()){
//select these layers and get blendmode.
BlendMode = layerNameList[3].toString();
selectLayerById(Number(layerNameList[0]), true);
}
}
activeDocument.activeLayer.merge();
setBlendMode(BlendMode);
}
};
function hasSelection (doc) {
if(doc == undefined) doc = activeDocument;
var res = false;
var as = doc.activeHistoryState;
doc.selection.deselect();
if (as != doc.activeHistoryState) {
res = true;
doc.activeHistoryState = as;
}
return res;
};
function SelectWhite() {
function cTID(s) { return app.charIDToTypeID(s); };
var desc22 = new ActionDescriptor();
desc22.putInteger( cTID('Fzns'), 100 );
var desc23 = new ActionDescriptor();
desc23.putDouble( cTID('Lmnc'), 100.000000 );
desc23.putDouble( cTID('A '), 0.000000 );
desc23.putDouble( cTID('B '), 0.000000 );
desc22.putObject( cTID('Mnm '), cTID('LbCl'), desc23 );
var desc24 = new ActionDescriptor();
desc24.putDouble( cTID('Lmnc'), 100.000000 );
desc24.putDouble( cTID('A '), 0.000000 );
desc24.putDouble( cTID('B '), 0.000000 );
desc22.putObject( cTID('Mxm '), cTID('LbCl'), desc24 );
try{
executeAction( cTID('ClrR'), desc22, DialogModes.NO );
}catch(e){}
};
function deselectLayers() {
var desc01 = new ActionDescriptor();
var ref01 = new ActionReference();
ref01.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
desc01.putReference( charIDToTypeID('null'), ref01 );
executeAction( stringIDToTypeID('selectNoLayers'), desc01, DialogModes.NO );
};
function setBlendMode(blendMode) {
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
desc.putReference( charIDToTypeID('null'), ref );
var desc2 = new ActionDescriptor();
desc2.putEnumerated( charIDToTypeID('Md '), charIDToTypeID('BlnM'), stringIDToTypeID(blendMode) );
desc.putObject( charIDToTypeID('T '), charIDToTypeID('Lyr '), desc2 );
executeAction( charIDToTypeID('setd'), desc, DialogModes.NO );
};
function UniqueSortedList(ArrayName){
var unduped = new Object;
for (var i = 0; i < ArrayName.length; i++) {
unduped[ArrayName] = ArrayName;
}
var uniques = new Array;for (var k in unduped) {
uniques.push(unduped);}
return uniques;
}
function selectLayerById(ID, add) {
add = (add == undefined) ? add = false : add;
var ref = new ActionReference();
ref.putIdentifier(charIDToTypeID('Lyr '), ID);
var desc = new ActionDescriptor();
desc.putReference(charIDToTypeID('null'), ref);
if (add) {
desc.putEnumerated(stringIDToTypeID('selectionModifier'), stringIDToTypeID('selectionModifierType'), stringIDToTypeID('addToSelection'));
}
desc.putBoolean(charIDToTypeID('MkVs'), false);
executeAction(charIDToTypeID('slct'), desc, DialogModes.NO);
}
function getNamesPlusIDs(){
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
var count = executeActionGet(ref).getInteger(charIDToTypeID('NmbL')) +1;
var Names=[];
try{
activeDocument.backgroundLayer;
var i = 0; }catch(e){ var i = 1; };
for(i;i<count;i++){
if(i == 0) continue;
ref = new ActionReference();
ref.putIndex( charIDToTypeID( 'Lyr ' ), i );
var desc = executeActionGet(ref);
var layerName = desc.getString(charIDToTypeID( 'Nm ' ));
var Id = desc.getInteger(stringIDToTypeID( 'layerID' ));
if(layerName.match(/^<\/Layer group/) ) continue;
var layerType = typeIDToStringID(desc.getEnumerationValue( stringIDToTypeID( 'layerSection' )));
desc.hasKey( stringIDToTypeID( 'smartObject' ) ) ? SO = true : SO=false;
var blendmode = typeIDToStringID(desc.getEnumerationValue( stringIDToTypeID( 'mode' )));
Names.push([[Id],[layerName],[SO],[blendmode]]);
};
return Names;
};
function deleteLayerByID(ID) {
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putIdentifier(charIDToTypeID('Lyr '), ID);
desc.putReference( charIDToTypeID('null'), ref );
executeAction( charIDToTypeID('Dlt '), desc, DialogModes.NO );
};
function dupLayers(DocName) {
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
desc.putReference( charIDToTypeID('null'), ref );
var ref2 = new ActionReference();
ref2.putName( charIDToTypeID('Dcmn'), DocName);
desc.putReference( charIDToTypeID('T '), ref2 );
desc.putInteger( charIDToTypeID('Vrsn'), 5 );
executeAction( charIDToTypeID('Dplc'), desc, DialogModes.NO );
};
function WaterMarkHide() {
var desc = new ActionDescriptor();
var list = new ActionList();
var ref = new ActionReference();
ref.putName( charIDToTypeID('Lyr '), "Watermark (Alpha)" );
list.putReference( ref );
desc.putList( charIDToTypeID('null'), list );
try{executeAction( charIDToTypeID('Hd '), desc, DialogModes.NO );}catch(e){}
};
function selectAllLayers() {
var desc29 = new ActionDescriptor();
var ref23 = new ActionReference();
ref23.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
desc29.putReference( charIDToTypeID('null'), ref23 );
executeAction( stringIDToTypeID('selectAllLayers'), desc29, DialogModes.NO );
}
function getLayerBoundsByIndex( ID ) {
var ref = new ActionReference();
ref.putProperty( charIDToTypeID("Prpr") , stringIDToTypeID( "bounds" ));
ref.putIdentifier(charIDToTypeID('Lyr '), ID);
var desc = executeActionGet(ref).getObjectValue(stringIDToTypeID( "bounds" ));
var bounds = [];
bounds.push(desc.getUnitDoubleValue(stringIDToTypeID('left')));
bounds.push(desc.getUnitDoubleValue(stringIDToTypeID('top')));
bounds.push(desc.getUnitDoubleValue(stringIDToTypeID('right')));
bounds.push(desc.getUnitDoubleValue(stringIDToTypeID('bottom')));
return bounds;
};
function selectArea() {
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putProperty( charIDToTypeID('Chnl'), charIDToTypeID('fsel') );
desc.putReference( charIDToTypeID('null'), ref );
var ref2 = new ActionReference();
ref2.putEnumerated( charIDToTypeID('Chnl'), charIDToTypeID('Chnl'), charIDToTypeID('Trsp') );
desc.putReference( charIDToTypeID('T '), ref2 );
executeAction( charIDToTypeID('setd'), desc, DialogModes.NO );
};
function openSO(){
executeAction(stringIDToTypeID( "placedLayerEditContents" ), undefined, DialogModes.NO );
};
function setLayersVisOn(){
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
var count = executeActionGet(ref).getInteger(charIDToTypeID('NmbL')) +1;
try{
activeDocument.backgroundLayer;
var i = 0; }catch(e){ var i = 1; };
for(i;i<count;i++){
ref = new ActionReference();
ref.putIndex( charIDToTypeID( 'Lyr ' ), i );
var desc = executeActionGet(ref);
var layerName = desc.getString(charIDToTypeID( 'Nm ' ))
if(layerName.match(/^<\/Layer group/) ) continue;
if(!desc.getBoolean(stringIDToTypeID('visible'))){
var list = new ActionList();
list.putReference( ref );
desc.putList( charIDToTypeID('null'), list );
executeAction( charIDToTypeID('Shw '), desc, DialogModes.NO );
}
};
};
Seems to work just fine here!
The original stitcher took only a couple minutes and the revised script took about 15 minutes to fuse together 25 tiles of 1024x1024 each with all 24 multi-pass layers turned on in C4D.
Ran into one tiny issue. When running your newly updated Smart Object fusion script, I got this error at the end of merger operation when running it on 32bpc tiles. However, everthing looked fine visually. Running Mac CS6 (13.0.4) here.
Oh wait a sec. I just remembered C4D can also store any number of Object Buffers into the Alpha Channels as well. Yuck.
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