<commit_before>(function() {
  /**
   * Brief intends for "Binary Robust Independent Elementary Features".This
   * method generates a binary string for each keypoint found by an extractor
   * method.
   * @static
   * @constructor
   */
  tracking.Brief = {};

  /**
   * The set of binary tests is defined by the nd (x,y)-location pairs
   * uniquely chosen during the initialization. Values could vary between N =
   * 128,256,512. N=128 yield good compromises between speed, storage
   * efficiency, and recognition rate.
   * @type {number}
   */
  tracking.Brief.N = 128;

  /**
   * Caches coordinates values of (x,y)-location pairs uniquely chosen during
   * the initialization.
   * @type {Object.<number, Int32Array>}
   * @private
   * @static
   */
  tracking.Brief.randomImageOffsets_ = {};

  /**
   * Caches delta values of (x,y)-location pairs uniquely chosen during
   * the initialization.
   * @type {Int32Array}
   * @private
   * @static
   */
  tracking.Brief.randomWindowOffsets_ = null;

  /**
   * Generates a brinary string for each found keypoints extracted using an
   * extractor method.
   * @param {array} The grayscale pixels in a linear [p1,p2,...] array.
   * @param {number} width The image width.
   * @param {array} keypoints
   * @return {Int32Array} Returns an array where for each four sequence int
   *     values represent the descriptor binary string (128 bits) necessary
   *     to describe the corner, e.g. [0,0,0,0, 0,0,0,0, ...].
   */<commit_msg>Uses Brief-64 by default<commit_after>(function() {
  /**
   * Brief intends for "Binary Robust Independent Elementary Features".This
   * method generates a binary string for each keypoint found by an extractor
   * method.
   * @static
   * @constructor
   */
  tracking.Brief = {};

  /**
   * The set of binary tests is defined by the nd (x,y)-location pairs
   * uniquely chosen during the initialization. Values could vary between N =
   * 128,256,512. N=128 yield good compromises between speed, storage
   * efficiency, and recognition rate.
   * @type {number}
   */
  tracking.Brief.N = 512;

  /**
   * Caches coordinates values of (x,y)-location pairs uniquely chosen during
   * the initialization.
   * @type {Object.<number, Int32Array>}
   * @private
   * @static
   */
  tracking.Brief.randomImageOffsets_ = {};

  /**
   * Caches delta values of (x,y)-location pairs uniquely chosen during
   * the initialization.
   * @type {Int32Array}
   * @private
   * @static
   */
  tracking.Brief.randomWindowOffsets_ = null;

  /**
   * Generates a brinary string for each found keypoints extracted using an
   * extractor method.
   * @param {array} The grayscale pixels in a linear [p1,p2,...] array.
   * @param {number} width The image width.
   * @param {array} keypoints
   * @return {Int32Array} Returns an array where for each four sequence int
   *     values represent the descriptor binary string (128 bits) necessary
   *     to describe the corner, e.g. [0,0,0,0, 0,0,0,0, ...].
   */
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{'dir': 'git-commits-cleaned', 'id': '1838353', 'n_tokens_mistral': 961, 'n_tokens_neox': 886, 'n_words': 315}