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hlac_mat

HLAC(高次局所自己相関)の位置不変性と加法性の確認

深層学習が嫌いになって禿げそうになるので,精神安定剤としての高次局所自己相関プレイグラウンド

元ネタ

世界一やさしいHLAC入門!(間違い探し編) とても分かりやすく書かれています. こちらをほぼそのままMATLAB向けに書きなおしました.

使い方

  1. 2値HLACの実装

    hlac_main.mをMATLAB/MATLAB onlineで実行する.

    下記Figureが出現する. グラフは,犬画像(dog1),位置が異なる犬画像(dog2),猫画像(cat),マージ画像(dogcat)それぞれのHLAC特徴をグラフ化したものである. 下記確認ができる

  2. 2値HLACによる間違い探しの実装

    間違い探しの画像はWikipediaからの引用である. hlac_main2.mをMATLAB/MATLAB onlineで実行する.

    下記グラフが出現する.

    上記グラフは間違い探し画像のReferenceおよびTargetのHLAC特徴量と差分,また,その内積を求めた際の位相差である.位相差が大きい(=間違い探しの答えである確率が大きい)所を,右図に示した.

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