Image Processing in Node.js with Sharp
/*
This code comes from Vincent Lab
And it has a video version linked here: https://www.youtube.com/watch?v=WtuJLcBvxI0
*/
// Import dependencies
const sharp = require("sharp");
const fs = require("fs");
(async function () {
try {
// // png, webp, jpeg, tiff, heif, raw
// const info = await sharp("images/shapes.png").png().toFile("images/edited-shapes.png");
// const info = await sharp("images/shapes.png").jpeg().toFile("images/edited-shapes.jpeg");
// console.log(info);
// const image = await sharp("images/shapes.png").png().toBuffer();
// fs.writeFileSync("images/edited-shapes.png", image);
// // Metadata
// const metadata = await sharp("images/shapes.png").metadata();
// console.log(metadata);
// // Applies a grayscale effect to the image
// await sharp("images/shapes.png").grayscale().png().toFile("images/edited-shapes.png");
// // Resizes the image
// await sharp("images/shapes.png").resize(300, 200).png().toFile("images/edited-shapes.png");
// // Any pixel value greather than or equal to the threshold value will be set to 255, otherwise it will be set to 0.
// await sharp("images/shapes.png").threshold(100).png().toFile("images/edited-shapes.png");
// // Recomb the image with the specified matrix.
// await sharp("images/shapes.png").recomb([
// [0.3588, 0.7044, 0.1368],
// [0.2990, 0.5870, 0.1140],
// [0.2392, 0.4696, 0.0912],
// ]).png().toFile("images/edited-shapes.png");
// // Transforms the image using brightness, saturation and hue rotation.
// await sharp("images/shapes.png").modulate({
// // brightness: 2, // Increase lightness by a factor of 2
// // saturation: 0.5,
// hue: 180 // Hue rotate by 180 degrees
// }).png().toFile("images/edited-shapes.png");
// // Blur the image. When used without parameters, performs a fast, mild blur of the output image. When a sigma is provided, performs a slower, more accurate Gaussian blur.
// // Value between 0.3 and 1000
// await sharp("images/shapes.png").blur().png().toFile("images/edited-shapes.png");
// Make a new image
const info = await sharp({
create: {
width: 1920,
height: 1080,
channels: 4,
background: { r: 255, g: 0, b: 0, alpha: 0.5 }
}
}).png().toFile("images/edited-shapes.png");
} catch (error) {
console.log(error);
}
})();