Inversión Binaria de imagenes

image_inverter.js

// npm install jimp
const Jimp = require('jimp');
 
function reverseString(str) {
    return str.split("").reverse().join("");
}

function dec2bin(dec){
    return (dec >>> 0).toString(2);
}

function bin2dec (bin){
    return parseInt(bin, 2);
}

function convertToBinaryColor(colorDecimal){
  const colorBinary = dec2bin(colorDecimal);
  return colorBinary.padStart(8, '0');
}

function joinBinaryRGB(pixel){
  return convertToBinaryColor(pixel.r) + convertToBinaryColor(pixel.g) + convertToBinaryColor(pixel.b);
}

function splitBinaryRGB(chunk){
  return chunk.match(/.{8}/g);
}
 
function segmentsToJimpObj(segments, alpha){
  return Jimp.rgbaToInt(bin2dec(segments[0]), bin2dec(segments[1]), bin2dec(segments[2]), alpha)
}

function replacePixel(img, width, height){
  console.time("Pixel conversion");
  const pixel = Jimp.intToRGBA(img.getPixelColor(width, height));
  console.log(`[Current] Pixel ${width},${height}: ${pixel}`);

  const binaryRGB = joinBinaryRGB(pixel);
  console.log(`[Current] Pixel ${width},${height} | Binary: ${binaryRGB}`);
  
  const reversedBinaryRBG = reverseString(binaryRGB);
  console.log(`[Current] Pixel ${width},${height} | Reversed Binary: ${reversedBinaryRBG}`);

  const segmentedBinaryRGB = splitBinaryRGB(reversedBinaryRBG);
  console.log(`[Current] Pixel ${width},${height} | Reversed Binary Splitted: ${reversedBinaryRBG}`);
  
  const pixelGenerated = segmentsToJimpObj(segmentedBinaryRGB, pixel.a);
  console.log(`[Current] Pixel ${width},${height} | Final Data: ${pixelGenerated}`);

  img.setPixelColor(pixelGenerated, width, height);
  console.timeEnd("Pixel conversion");
  console.log("--------------");
} 
 
Jimp.read('img_original.jpg', (err, img) => {
  if (err) throw err;
  const originalWidth = img.bitmap.width;
  const originalHeight = img.bitmap.height;
  let currentWidth = 0;
  let currentHeight = 0;
  console.time("Image conversion")
  for (currentWidth = 0; currentWidth < originalWidth; currentWidth++) {
    for (currentHeight = 0; currentHeight < originalHeight; currentHeight++) {
      replacePixel(img, currentWidth,currentHeight);
    }
  }
  
  img.write('img_new.jpg');
  console.timeEnd("Image conversion");
});