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Platinum Data Meetup vol.1での登壇資料(2018/8/30開催)
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The six step guide to practical project management
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Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
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Bp meetup mahjong-180830
1.
麻雀PJのご紹介と裏話 Platinum Data Meetup
vol.1 2018/08/30 Rio Kurihara
2.
2 はじめに 資料は後日公開予定 写真撮影OK SNSアップOK
3.
麻雀 機械学習 アウトドアコミュ力 エンジニアリング 3 自己紹介 栗原 理央(Rio
Kurihara) ▪ データサイエンティスト 新卒3年目
4.
4 本発表の目的 ▪ 麻雀(PJ)に興味を持ってもらう ▪ あわよくば一緒に開発してくれる人を探す ▪
「麻雀の人」という洗脳がしたい ※技術の細かい話はしません
5.
麻雀PJとは プロセスイメージ Input(画像) ※Sample 牌の識別 役名 1p 2p
3p … 8m 9m p f c 平和 1 1 1 … 0 0 0 0 0 断ヤオ 0 1 1 … 1 0 0 0 0 混一 0 0 0 … 1 1 3 0 0 点数計算 ルールベース 4 一萬:3枚 九萬:3枚 二筒:1枚 三筒:1枚 四筒:1枚 … Who? ただの麻雀好き1名+心優しい助っ人の方々(完全非業務) What? 麻雀の点数計算を自動化する Why? 点数計算ができない・覚えるの面倒くさい・初心者のハードル下げたい How? 画像つかう ※詳細は後述 ※お遊びで始まり、 未だお遊びの域を出ていない
6.
6 0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移
7.
0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 7 ふわっとPJ始動
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8 PJ開始時のリサーチ(2017/2時点) ▪ 需要はあるのか? →
無くはなさそう ▪ 既存サービスは? → 1つ見つけたがリリース前 役自動計算アプリ①(非画像認識) 役自動計算アプリ②(画像認識・開発途中) • 役自動計算アプリ②を作った人っぽい人のブログ
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9 とりあえずテンプレートマッチング 試してみよう
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10 テンプレートマッチングとは テンプレート画像(探索対象)と、 探索領域となる画像を入力とする。テンプレート画像を 少しずつずらしながら、探索領域内の対象領域との比較を行う。
11.
11 テンプレートマッチングによる検出結果(1) output (閾値0.55) output (閾値0.6) テンプレート 画像 入力画像 (探索用) 牌 max_val e 0.763 c
0.534 9s 0.740 9p 0.529 9m 0.749 8s 0.656 7s 0.732 6s 0.601 4p 0.639 3p 0.694 3m 0.577 2p 0.796 1p 0.546 1m 0.721 8m 0.478 6m 0.470 7p 0.466 1s 0.456 2s 0.438 Before After
12.
12 テンプレートマッチングによる検出結果(2) ▪ 牌毎の閾値を設定しようと複数データを識別させてみましたが、そもそも、撮影条件がかなり整っていないと識別は難しそう ⇒完全真上からの撮影、明るさが適切、方向が正しい 逆さま・明るめ・画質悪めの画像(閾値0.4) 正解牌数:0 (閾値0.55で識別0、閾値0.4で上記結果) かなりいい感じの画像①(閾値0.55) 正解牌数:14牌(100%) ちょっと斜めからの画像①(閾値0.55) 正解牌数:2 明るめ・画質悪めの画像(閾値0.4) 正解牌数:0 (閾値0.55で識別0、閾値0.4で上記結果) ちょっと斜めの画像②(閾値0.55) 正解牌数:3 かなり斜め・暗めの画像(閾値0.55) 正解牌数:1
13.
13 テンプレートマッチングによる検出結果(2) ▪ 牌毎の閾値を設定しようと複数データを識別させてみましたが、そもそも、撮影条件がかなり整っていないと識別は難しそう ⇒完全真上からの撮影、明るさが適切、方向が正しい 逆さま・明るめ・画質悪めの画像(閾値0.4) 正解牌数:0 (閾値0.55で識別0、閾値0.4で上記結果) かなりいい感じの画像①(閾値0.55) 正解牌数:14牌(100%) ちょっと斜めからの画像①(閾値0.55) 正解牌数:2 明るめ・画質悪めの画像(閾値0.4) 正解牌数:0 (閾値0.55で識別0、閾値0.4で上記結果) ちょっと斜めの画像②(閾値0.55) 正解牌数:3 かなり斜め・暗めの画像(閾値0.55) 正解牌数:1 圧倒的イケてなさ
14.
14 テンプレートマッチングがうまくいかなかった理由 出力 誤り先 (テンプレー ト) ▪ 牌の中に内包関係がある ▪ 牌の輪郭抽出をしたあとのテンプレートマッチングならうまくいくかもしれない
15.
0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 15 初期モデル 構築完了 初社内発表
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16 助っ人の登場により深層学習(SSD)モデルが誕生
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17 みんな大好きSSD 原文:https://arxiv.org/pdf/1512.02325.pdf 論文和訳:https://qiita.com/de0ta/items/1ae60878c0e177fc7a3a ▪ 深層学習の物体検出アルゴリズム ▪ 画像中の「どこに」「何が」あるかを予測する
18.
18 SSDによる検出結果
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19 SSDによる検出結果 イケてる
20.
0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 20 改良モデル 構築完了 MAX
21.
0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 21 ??? 初社外共有
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22 2018年5月21日 東北大学の学生チームが 初心者向け麻雀支援アプリ「JongHelper」を開発 学生向けハッカソン「JPHACKS2017」に出場し、 審査員特別賞の他4つの企業賞を同時受賞
23.
https://mj-news.net/game-app/2018052198280
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24 み、皆考えることは同じなんや・・・!
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25 焦りはじめ、LINE bot開発に着手
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0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 26 ??? MIN
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27 2018年6月27日 KDDIがiOSアプリ「麻雀カメラ」をリリース
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28 https://game.watch.impress.co.jp/docs/news/1130791.html https://news.mynavi.jp/article/20180627-656167/
29.
29 方々からの煽りを受ける ※ ↓本日meetup主催者 ※ 本日meetup登壇者
→
30.
30 もうやめて! とっくにライフはゼロよ・・・
31.
31 現在 ▪ LINE bot開発継続中 ▪
GDG Dev Fest Tokyo 2018(明後日9/1)に向けて死にそうになりながらデモ作成中 https://aiyprojects.withgoogle.com/vision/
32.
0 10 20 30 40 50 60 70 80 90 100 2017/2 2017/3 2017/4 2017/5 2017/6 2017/8 2017/11 2018/5 2018/6 2018/7 2018/8 2018/8/30 中の人のテンション推移 32 本日
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33 まとめと今後 ▪ 凹まずに頑張ります ▪ 麻雀PJに興味持ってもらえたら嬉しい
34.
34 ご清聴ありがとうございました (ご興味ある方、このあとの懇親会で是非)
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35 【参考】 学習データの作成 ▪ アノテーションは本当に辛い。最低でも数百枚は必要 ▪
34種類の牌画像だけ撮影し、あとはランダムに配置するだけ 牌画像 学習用画像
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