Implement the Image Resize and Grayscale Features
Explore implementing image resize and grayscale features in a JavaScript photo editor using 3D arrays. Learn to manipulate pixel data to change image dimensions and convert color images to shades of gray. This lesson teaches practical approaches for handling image pixels and rendering updates on a canvas.
We'll cover the following...
We'll cover the following...
Introduction
In the previous lessons, we implemented the functions to upload, save, rotate, and flip an image. In this lesson, we'll be implementing functions to resize an image and grayscale an image. Let's move on to the implementation.
Function to resize an image
Below is an illustration of the logic of resizing the pixel values of an image. Suppose that we have an image with