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Selection of All White Pixel Clusters >1x800 and Fill in New Channel

WMETS
Explorer ,
Aug 05, 2024 Aug 05, 2024

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I have a TIFF file with dimensions 18320x24440 pixels and a resolution of 508 ppi. The image consists only of black and white pixels, with no gray tones. I would like to create a script that does the following:

  1. Select all the white areas with a width or height greater than 1x800 pixels.
  2. Combine these areas into one selection.
  3. Fill a layer or channel within this selection with black.

Can someone help me with this?

TOPICS
Actions and scripting , macOS

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correct answers 1 Correct answer

Davide_Barranca
Engaged , Aug 08, 2024 Aug 08, 2024

Hi, 

Save the following in a .psjs file and File > Scripts > Browse...

It should output a selection of the clusters you need. Caveat: it doesn't work on Bitmap, please convert the image to Grayscale first.

 

const photoshop = require("photoshop");
const { core, imaging, app } = photoshop;

async function getDocumentPixelData(documentID) {
  const document = app.activeDocument;
  const width = document.width;
  const height = document.height;

  try {
    // Get the pixel data of the document
    con
...

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WMETS
Explorer ,
Aug 08, 2024 Aug 08, 2024

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In Response To Davide_Barranca

@Davide_Barranca Can I ask you if you build in some extras in this script? 

 

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WMETS
Explorer ,
Aug 08, 2024 Aug 08, 2024

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In Response To Davide_Barranca

It would be very helpfull if the script starts with dialog screen where it horizontal or vertical, black or white, amount of min or amount of max pixels. It`'s only possible to have one answer per question. Something like attached Screenshot 2024-08-08 at 17.14.47.png

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