Get pixel color from an image

Question

I have an image on a browser.

I want to get the top left pixel of the image color (at coordinates: 0,0), no matter whether the image is rotated or not.

How

Answer 1

For an image on a browser you can't use PHP unless you can transfer the image to a server first.

n the browser, if you can draw the image in a canvas you could use the getImageData() method:

var myImg = new Image();
myImg.src = 'image.jpg';
var context = document.getElementById('canvas').getContext('2d');
context.drawImage(myImg, 0, 0);
var data = context.getImageData(x, y, 1, 1).data;

You'd have to allow for any rotation - presumably you know what rotation has been applied.