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C
cutch2222
Known Participant
July 10, 2017
Question

sort bright photos from dark photos in bridge?

  • July 10, 2017
  • 3 replies
  • 5598 views

This needs a creative mind.

I know we can sort pics via metadata in a bridge script, but is there any way to sort bright photos from dark photos? (regardless of aperture, flash, exposure time - based solely on illumination)  I'd like to run a different action on each.

And if not in bridge, can anyone think of a clever conditional in photoshop actions?

This topic has been closed for replies.

3 replies

paulinaj36745582
paulinaj36745582
Participant
December 29, 2019

I've tested/tried everyone script above and noone work. I've tried it on CC2018, CC2019 and older version of Photoshop - CS2.

I've got error:

Error 1242: Illegal argument - argument 1
- File/Folder expected
Une: 19
-> open(fileList);

So I changed open(fileList) to open(fileList[a]) and script startr running but nothing happen, only open and close files from selected folder.

Is anything I'm doing wrong? I run script directly from Photoshop -> Files -> Scripts. I have more then 5 milion photos day and night and I want separate day from nighy shots. Do this task manual is neverending story, so maybe someone could help me to run this script and help automate Label .jpg photos.

    L
    Lumigraphics
    Legend
    September 16, 2020

    Have you thought of using the time captured in metadata? 9PM is night, 3PM is day. etc.

    J
    Jarrod Wouters
    Participant
    May 8, 2018

    Awesome script, thanksSuperMerlin I'm only working with jpgs and in lightroom, so I would like to avoid xmp. How can I write this directly to the exif instead of creating an xmp?

    Also, can anyone thing of how I could sort images in lightroom this way? Without renaming the filename.

    SuperMerlin
    SuperMerlin
    Inspiring
    May 8, 2018

    This version writes the mean value to keywords I.E. "Mean value = 114.34"

    Sorry I know nothing about Lightroom, so can't help there.

    #target photoshop;  
    app.bringToFront();  
      
    main();  
    function main(){  
    var inputFolder= Folder.selectDialog ("Please select folder to process");  
    if(inputFolder == null) return;  
    var fileList = inputFolder.getFiles(/\.(jpg|dng|tif|psd|psb|exr|png)$/i);  
    if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");     
    for(var a in fileList){  
    open(fileList);  
    var doc = activeDocument;  
    if (doc.mode != DocumentMode.LAB) doc.changeMode(ChangeMode.LAB);   
    var L = activeDocument.channels["Lightness"].histogram;    
    var mean =  meanHist(L).toFixed(2);  
    if(fileType() != "Camera Raw"){  
    setMetadata( fileList, mean);  
    }else{ continue;} 
    app.activeDocument.close(SaveOptions.DONOTSAVECHANGES); 
     }
    };  
    function setMetadata( file,mean){  
    var data = "Mean value = " + mean;
    if ( !ExternalObject.AdobeXMPScript ) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript');  
            var xmpf = new XMPFile( File(file).fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE );  
            var xmp = xmpf.getXMP();     
            xmp.appendArrayItem(XMPConst.NS_DC, "subject", data, 0,XMPConst.PROP_IS_ARRAY);   
          if (xmpf.canPutXMP( xmp )) {  
             xmpf.putXMP( xmp );  
          }  
          xmpf.closeFile( XMPConst.CLOSE_UPDATE_SAFELY );  
    };  
    function meanHist(hist) {   
       var acc = 0;   
       var cnt = 0;   
       for (var i = 0; i < hist.length; i++) {   
         acc += i*hist;   
         cnt += hist;   
       }   
       return acc/cnt;   
    };  
    function fileType(){  
    var ref = new ActionReference();  
    ref.putProperty( charIDToTypeID("Prpr"), stringIDToTypeID("format"));  
    ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );   
    return executeActionGet(ref).getString(stringIDToTypeID("format"));  
    };
    R
    Rudolf L
    Known Participant
    September 16, 2020

    Doesn't work for me too on PS 21.2. Seems everything related to activeDocument.histogram goes down a black hole on newer versions of PS. Any thoughts on that? Is that a known bug or a change in the API?

    Stephen Marsh
    Community Expert
    Stephen MarshCommunity Expert
    Community Expert
    July 12, 2017

    Is there a different, consistent metadata value to help distinguish between a light and dark file?

    If not, then this would likely need the help of Photoshop in order to assess the histogram.

    Re: export histogram mean value for RGB to csv file

    How to get vaules in the histogram

    SuperMerlin
    SuperMerlin
    Inspiring
    July 12, 2017

    I don't know if this will help. This script will create a csv file of mean histogram values for a folder of documents.

    (Photoshop Script)

    #target photoshop;
    app.bringToFront();
    main();
    function main(){
    var inputFolder= Folder.selectDialog ("Please select folder to process");
    if(inputFolder == null) return;
    var fileList = inputFolder.getFiles(/\.(jpg|dng|tif|psd|crw|cr2|psb|exr|nef|dcr|dc2|erf|raf|orf|tga|mrw|mos|srf|pic|pct|pxr|pdd|pef|png|x3f|rw2)$/i);
    var outFile = File(Folder.desktop +"/"+decodeURI(inputFolder.name)+".csv");
    outFile.open('w');
    outFile.writeln("Filename,Mean Histogram");
    for(var a in fileList){
    open(fileList);
    var area = activeDocument.histogram; 
    outFile.writeln(decodeURI(activeDocument.name)+ "," + mean(area).toFixed(0));
    app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);
    }
    outFile.close();
    alert("Process complete\nCSV created...\n" + decodeURI(outFile));
    }
    function mean(hist) { 
       var acc = 0; 
       var cnt = 0; 
       for (var i = 0; i < hist.length; i++) { 
         acc += i*hist; 
         cnt += hist; 
       } 
       return acc/cnt; 
    };
      SuperMerlin
      SuperMerlin
      Inspiring
      July 12, 2017

      OK, as a proof of concept, I used SuperMerlin’s original script to output the mean histogram level value to CSV file.

      I then added the path to the image as a column. So the CSV import file had two columns with the following titles:

      SourceFile,Subject

      /path/to/file/hi.JPG,166 mean histogram value

      /path/to/file/low.JPG,32 mean histogram value

      /path/to/file/mid.jpg,128 mean histogram value

      I then used the following ExifTool command to import and append the mean value as an entry in the Subject (keyword) metadata against each image:

      exiftool -sep ',' -csv+='/path/to/csv/file/import-file.csv' 'path/to/image/folder'

      Then in Bridge the keywords can be used to sort the images from say high key to low key based on the mean histogram value keyword:


      Here is another version that labels the documents...

      Big downfall at the moment. It does not do raw files.

      #target photoshop;
      app.bringToFront();
      main();
      function main(){
      var inputFolder= Folder.selectDialog ("Please select folder to process");
      if(inputFolder == null) return;
      var fileList = inputFolder.getFiles(/\.(jpg|tif|psd|)$/i);
      if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");   
      for(var a in fileList){
      open(fileList);
      var mean =  meanHist(activeDocument.histogram).toFixed(0);
      switch( true ){
              case ( mean <= 110 ): setLabel( fileList,"To Do"); break;
              case ( mean > 111 && mean <= 180 ): setLabel( fileList,"Approved"); break;
              case ( mean >= 181 ): setLabel( fileList,"Review"); break;
              default : break;
          }
      app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);
      }
      };
      function setLabel( file,label){
      if ( !ExternalObject.AdobeXMPScript ) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript');
              var xmpf = new XMPFile( File(file).fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE );
              var xmp = xmpf.getXMP();
             xmp.deleteProperty(XMPConst.NS_XMP, "Label");   
              xmp.setProperty(XMPConst.NS_XMP, "Label",label);  
            if (xmpf.canPutXMP( xmp )) {
               xmpf.putXMP( xmp );
            }
            xmpf.closeFile( XMPConst.CLOSE_UPDATE_SAFELY );
      };
      function meanHist(hist) { 
         var acc = 0; 
         var cnt = 0; 
         for (var i = 0; i < hist.length; i++) { 
           acc += i*hist; 
           cnt += hist; 
         } 
         return acc/cnt; 
      };
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