Total number of pixels

[norberta70820063]

Hi guys, 

I'm looking for a way to see the total number of pixels in a photo. So height times width of the pixels. Is there perhaps already a script or an action for this and if so where? 

Best regards 

Norbert
---------

Hallo Leute, 

ich suche nach einer Möglichkeit die gesamte Anzahl der Pixel eines Fotos zu sehen. Also Höhe mal Breite der Pixel. Gibt es dafür evtl. schon ein Script oder eine Aktion und wenn ja wo? 

Beste Grüße
Norbert

[Stephen_A_Marsh]

If the image is flattened, then Image > Canvas Size or even Image > Image Size or the Properties or Info panel can show the current pixel width and height. The histogram panel will list the width x height in pixels.

If there are layers, their content may be smaller or larger than the canvas and can be found via Properties or Transform or scripting bounds.

Yes, this can easily be scripted, but what do you need to do with the total pixel count?

[norberta70820063]

Hello Stephen,

Thank you for your contribution,

but please don't discuss why I need this information.

These are specifications from a very specific photo agency for very large panoramas.

Of course you can easily calculate this for individual panoramas, but with over 1600 panoramas the fun slowly stops.

So how and where do I get the information about the total number of pixels?

Greetings

Norbert

[Stephen_A_Marsh]

Hello Stephen,

Thank you for your contribution,

but please don't discuss why I need this information.

These are specifications from a very specific photo agency for very large panoramas.

Of course you can easily calculate this for individual panoramas, but with over 1600 panoramas the fun slowly stops.

So how and where do I get the information about the total number of pixels?

Greetings

Norbert

By @norberta70820063

Start here:

https://prepression.blogspot.com/2016/08/extracting-metadata-to-csv.html

[Lumigraphics]

Simple script snippet:

try{
    var originalRulerUnits = preferences.rulerUnits;
    preferences.rulerUnits = Units.PIXELS;
    var h = app.activeDocument.height;
    var w = app.activeDocument.width;
    var t = h * w;
    Window.alert(h.toString() + ' pixel height\r' + w.toString() + ' pixel width\r' + t.toString() + ' total pixels');
    preferences.rulerUnits = originalRulerUnits;
    }
catch(e){
    Window.alert(e + ' Line: ' + e.line);
    }

[norberta70820063]

Hello Lumigraphics,

Thanks for your reply.

I assume that this information is a Photoshop script - right?

Unfortunately, I have no experience in creating such scripts myself.

How does that work?

Yes, I have Photoshop running on a Windows/PC.

Can you create such a script for me so that I can simply insert it?

Best regards

Norbert

[Lumigraphics]

You posted in the Photoshop forum so yes, Photoshop script. This data is also available in Lightroon and Bridge.

This is NOT a "do free work for me" forum. I recommend that you learn how to install scripts if you want to use them, there are lots of resources online to help. I've given you the meat of a script that you can take from there.

[norberta70820063]

Thanks for the hint. Ok, I'll try to learn that. 

Also, I wasn't asking for a free service, but for a possible existing solution.

Would your script suggestion also work in a German language version?

[norberta70820063]

Thanks for your support!

I have found a tutorial in German for the creation of a script: 

https://www.youtube.com/watch?v=g1fG_Zea96k

[Lumigraphics]

Great! We love it when people can learn from posting here. You can change the English text to German of course.

[norberta70820063]

I tried, but I failed.
Creating a script like this is probably a bit too complicated for me - sorry.
Is there really no ready-made solution?

[Lumigraphics]

I just wrote the script for you. Its right there. Google how to install a script in Photoshop.

And no, when someone wants a specific feature in Photoshop, it may not be there and you may have to write or use someone else's script. Most professional software is like that.

[norberta70820063]

I'll try again, but I'm only a musician and photographer 😉

[D Fosse]

What am I missing? Why is a script necessary to multiply w x h?

[Stephen_A_Marsh]

What am I missing? Why is a script necessary to multiply w x h?

By @D Fosse

The bit you missed is needing to do this for 1600+ files.

I'll post a solution later, there should be existing solutions or relatively easy ways to batch generate CSV data.

[D Fosse]

@Stephen_A_Marsh 

Oh, OK. Knew there was something... 😉

[Lumigraphics]

My Filename to List Bridge script handles exporting dimensions to tab-delimited text, and Excel would be able to handle the rest. Or modifying the bones of the script snippet I posted above.

[norberta70820063]

Sounds good Stephen.

If this could be displayed interactively in Photoshop as you work, that would be ideal.

A script action would also be great.

Lumigraphics has already suggested a script above,

but I simply can't integrate it as an action.

Unfortunately, I don't have the expertise.

[Stephen_A_Marsh]

Sounds good Stephen.

If this could be displayed interactively in Photoshop as you work, that would be ideal.

A script action would also be great.

Lumigraphics has already suggested a script above,

but I simply can't integrate it as an action.

By @norberta70820063

If you need a report, then look at the scripts and ExifTool methods previously linked at my blogpost.

As previously mentioned, total pixels are reported in the Histogram panel.

Do you really want a window popping up each time you open an image? If so, then a script can be set to automatically run when you open a document in Photoshop via the Script Events Manager. Or you can set a custom keyboard shortcut to an installed script or record the execution of a script into an action.

https://prepression.blogspot.com/2021/10/photoshop-script-events-manager.html?m=1

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html?m=1

https://prepression.blogspot.com/2018/03/photoshop-mega-pixel-value-script-mp.html?m=1

https://prepression.blogspot.com/2019/04/photoshop-document-info-aspect-ratio.html?m=1

[norberta70820063]

Hello Stephen,

Many thanks for your help.
In the histogram panel I can only see the MB but not the MP.

It's all a bit too complicated for me - sorry.

So I'll get some help and recommend your links.

Yes, triggering an action like this would be ideal.

Cheers

Norbert

[Stephen_A_Marsh · Accepted solution]

Hello Stephen,

Many thanks for your help.
In the histogram panel I can only see the MB but not the MP.

It's all a bit too complicated for me - sorry.

So I'll get some help and recommend your links.

Yes, triggering an action like this would be ideal.

Cheers

Norbert

By @norberta70820063

Mega pixels is total pixels divided by 1 million.

https://github.com/MarshySwamp/Report-Megapixel-Value/blob/main/Report%20Megapixel%20Value.jsx

https://prepression.blogspot.com/2018/03/photoshop-mega-pixel-value-script-mp.html?m=1

[norberta70820063]

Yes, that's what I thought at first, that I would find the answer to my question in the histogram,

but unfortunately it works less for me than in your example.

I have just opened an image with the data width 3967 px x height 2945 px for testing.

According to my calculation, that's 11682815, but Photoshop shows 183024!

What should I make of this?

[Stephen_A_Marsh]

What is the file format?

Is the file flattened or layered?

[norberta70820063]

no layer, psd, Adobe-RGB, 16bit

[norberta70820063 · Accepted solution]

With the help of Rick Maschke, the problem is solved.

https://www.youtube.com/watch?v=eGE0kJhE-0s