image-js/lib/stack/utility/averageImage.js

Image processing and manipulation in JavaScript

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = averageImage;
var _Image = _interopRequireDefault(require("../../image/Image"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
 * @memberof Stack
 * @instance
 * @return {Image}
 */
function averageImage() {
  this.checkProcessable('averageImage', {
    bitDepth: [8, 16]
  });
  let data = new Uint32Array(this[0].data.length);
  for (let i = 0; i < this.length; i++) {
    let current = this[i];
    for (let j = 0; j < this[0].data.length; j++) {
      data[j] += current.data[j];
    }
  }
  let image = _Image.default.createFrom(this[0]);
  let newData = image.data;
  for (let i = 0; i < this[0].data.length; i++) {
    newData[i] = data[i] / this.length;
  }
  return image;
}