Creates image data from HTML image
@param {HTMLImageElement} image HTML Image element
function createImageData(image) {
  const canvas = document.createElement('canvas')
  const ctx = canvas.getContext('2d')
  const width = image.naturalWidth
  const height = image.naturalHeight

  canvas.width = width
  canvas.height = height

  ctx.drawImage(image, 0, 0)

  return ctx.getImageData(0, 0, image.naturalWidth, image.naturalHeight)
}