function processImage(originalImg) {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
canvas.width = originalImg.naturalWidth;
canvas.height = originalImg.naturalHeight;
ctx.drawImage(originalImg, 0, 0);
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
const data = imageData.data;
for (let i = 0; i < data.length; i += 4) {
const r = data[i];
const g = data[i + 1];
const b = data[i + 2];
const tr = 0.393 * r + 0.769 * g + 0.189 * b;
const tg = 0.349 * r + 0.686 * g + 0.168 * b;
const tb = 0.272 * r + 0.534 * g + 0.131 * b;
data[i] = Math.min(255, tr);
data[i + 1] = Math.min(255, tg);
data[i + 2] = Math.min(255, tb);
}
ctx.putImageData(imageData, 0, 0);
return canvas;
}The Image Vintage Sepia Filter Application allows users to apply a vintage sepia filter to their images, enhancing them with warm brown tones that evoke a nostalgic and classic feel. This tool can be useful for photographers, graphic designers, or anyone looking to give their images an antique appearance for personal projects, social media sharing, or creative presentations.