[ITE-BCT202507] (招待講演) IoTセンシング技術の基礎及び放送技術分野へのIoT応用の可能性

Presented in ITE-BCT, 函館, July 24, 2025

石田 繁巳
(招待講演) IoTセンシング技術の基礎及び放送技術分野へのIoT応用の可能性
映像情報メディア学会 放送技術研究会, July 2025

https://www.ite.or.jp/ken/program/index.php?tgs_regid=ff02e69fcee23037e5e1fcd4acb6e77e5410f4870debbaf7c9bfa9cbdb7676a4

映像情報メディア学会 放送技術研究会 https://www.ite.or.jp/study/musen/

Transcript

1. <ish@fun.ac.jp> July 24, 2025 ITE BCT IoT IoT
2. July 24, 2025 Future University Hakodate n o 2025 7 @ o 2025 7 24 o 2
3. July 24, 2025 Future University Hakodate 14 IoT
4. July 24, 2025 Future University Hakodate n IoT o § § → n o IoT 1 IoT 15
5. July 24, 2025 Future University Hakodate 1. 2. 3. IoT o (?) 4. IoT 16
6. July 24, 2025 Future University Hakodate 17 [hayashi 21] Distinguishing working state by palm orientation, IEEE LifeTech
7. July 24, 2025 Future University Hakodate 18 1 ❓ 鐆傴 괏◄ أ٭ّ تُ٭عنؚ٤ ꪜ哅ⳉ 哅ⳉ٬ꪜ哅ⳉ敯䛜 舅Ⳃ䫟㲊بتطّ ⛼哅ꄈס⺎釱⴫ 哅ⳉ ꪜ哅ⳉ 哅ⳉ ꪜ哅ⳉ ䷉ャ ⹚泸 䡗Ꝏ 榟榤䓪⺸┕סג״ס舅䄕畘杼بتطّ ⶡ硾ך وٚؕفب٭מ鿥䜡 : F 0.8 ؛٤ٚؕ٤⚡閱 ذؕم٤ء 璛鋗⛼哅 哅ⳉ X軸 pitch Y軸 Z軸 roll ±0 -90 ±180 90 ±0 -90 ±180 90
8. July 24, 2025 Future University Hakodate 19 n o 7 50 [JRC 20] o [ 20] n o o → [JRC'20] 2020 https://www.jpc-net.jp/research/list/comparison.html [ '20] : , IIR
9. July 24, 2025 Future University Hakodate n o o 3 o → 20
10. July 24, 2025 Future University Hakodate 21 94.3% 66.4% 96.9% 88.9% っ っ 286 (60%) 189 (40%)
11. July 24, 2025 Future University Hakodate n o 3 o § X (roll ) § Y (pitch ) o § : 1 : 0 § 𝑛 →𝑛 22 きラベ生真特 徴量ベ生真特 抽ブック教 きラ 師あり力ンブサタ 角ンブサタ算出 閾値を用いて 掌の向きラベッ生教 真値 特徴量抽出ブ生ック 教師あり徴量ブ生ック 出力 師あり力ン真ンサ 角ンブサタ 掌の向きラベッ X軸 pitch Y軸 Z軸 roll ±0 -90 ±180 90 ±0 -90 ±180 90
12. July 24, 2025 Future University Hakodate n o o Z n : 10Hz n 𝑛: 10 n : 2 ( ) 23 F 10 CV 0.940 0.938 0.939 LOPO CV 0.933 0.924 0.927
13. July 24, 2025 Future University Hakodate n o o Z n : 10Hz 1Hz n 𝑛: 10 n : 2 ( ) 24 F 10 CV 0.929 0.926 0.926 LOPO CV 0.935 0.926 0.929
14. July 24, 2025 Future University Hakodate 25 [ishida 24] User identification via touch-screen button operation for smart home, Sensors and Materials, 36(10) [suda 23] User estimation with touch panel buttons toward in- home activity recognition, ICMU
15. July 24, 2025 Future University Hakodate 26 1 㳃䉀⫂车Ⳃ鏀閁מ⺸ׄגٗ٭ا䫟㲊 إ٭ٜ 䬠勅䣆嫎 82.3% ? • • → 㳃꧅䳩⛼ס攐䐶ךٗ٭ا؅䫟㲊 • • • • • • A B C or or 93.5%
16. July 24, 2025 Future University Hakodate n : AI IoT → 27 AI
17. July 24, 2025 Future University Hakodate n 1. § Ø 2. § Ø 28 ಈ͖ΛಡΈऔΓ εϥΠυ ճస Ϙλϯ
18. July 24, 2025 Future University Hakodate 29 ᶃ σʔλऩूɾಛ௃ྔநग़ ᶄ ϢʔβਪఆɾϞσϧͷֶश F1 0.021 F2 0.135 F3 0.789 ~~ ~~~ Time Position Pressure X Y 0 485 305 0 0.001 485 309 0.21653 ~~~~ ~~~ ~~~ ~~~~~~~ 1.201 482 300 0 ਪఆ݁Ռ
19. July 24, 2025 Future University Hakodate n o § Apple iPhone7 § Web § 85cm o § 20 n 1. § § § 2. : 100 30
20. July 24, 2025 Future University Hakodate n o 31 x, y 2 x, y 2 6 1 2 1 1 0.1 11 1 1
21. July 24, 2025 Future University Hakodate 32 n : 100 ( 90, 10) / n : 90% [pohl 15] → → [pohl 15] One-button recognizer: exploiting button pressing behavior for user differentiation, ACM UbiComp : ( ) + (13) + (17) (28) 84.1 92.5 92.6 85.9 93.1 94.6
22. July 24, 2025 Future University Hakodate 33 [ishida 22] Room-by-room device grouping for Put-and-Play IoT system, IEEE GLOBECOM [ishida 25] CSI sampling for room-by-room device grouping in practical environments, IEEE CCNC IoT
23. July 24, 2025 Future University Hakodate 34 1 IoT إ٭ٜ ؓوٞ٭ز IoT • IoT • IoT IoT (ARI 1.0 )
24. July 24, 2025 Future University Hakodate n IoT (PnP IoT) o ( ) IoT 35 TV 4 ( ) ( OFF)
25. July 24, 2025 Future University Hakodate 36 WPS OK ( ) ( OFF) تُ٭عتم٭؜ ԛ ԛ ԛ
26. July 24, 2025 Future University Hakodate n WiFi (CSI) o èCSI (= )IoT 37 E F v v A B C D F E G A D E G B C F
27. July 24, 2025 Future University Hakodate n WiFi (IEEE 802.11n, 802.11ac) o ( ) o CSI (Channel State Information) o 38 E[k] R[k] E[k] R[k] ࡶԻn H ௨৴࿏ʢνϟωϧʣ H n Hl = 2 6 6 4 h11 h12 · · · h1j h21 h22 · · · h2j · · · · · · · · · · · · hi1 hi2 · · · hij 3 7 7 5 <latexit sha1_base64="rp1Xu21+xBCNxKf1oM4LDSrS2sg=">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</latexit> <latexit sha1_base64="rp1Xu21+xBCNxKf1oM4LDSrS2sg=">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</latexit> <latexit sha1_base64="rp1Xu21+xBCNxKf1oM4LDSrS2sg=">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</latexit> <latexit sha1_base64="rp1Xu21+xBCNxKf1oM4LDSrS2sg=">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</latexit> RXΞϯςφ਺ TXΞϯςφ਺ 𝑅 𝑘 = 𝐻! 𝐸 𝑘 + 𝑛 𝑙:
28. July 24, 2025 Future University Hakodate 39
29. July 24, 2025 Future University Hakodate 40 (1) 1) 0.2 0.9 … 0.1 0.8 … … … … … … 0.2 0.9 … 0.1 0.8 … … … … … … <latexit sha1_base64="vYcOXklh+gWBP/5fdMQ1Vk+XYCU=">AAAB8XicbVDLSgNBEOyNr7i+oh69DIaAp7Ab4uMY8OIxgnlIsoTZyWwyZGZ2mZkVwpKv8CQoiFc/x5N/4yTZgyYWNBRV3XR3hQln2njet1PY2Nza3inuunv7B4dHpeOTto5TRWiLxDxW3RBrypmkLcMMp91EUSxCTjvh5Hbud56o0iyWD2aa0EDgkWQRI9hY6bGfaDbIav5sUCp7VW8BtE78nJQhR3NQ+uoPY5IKKg3hWOue7yUmyLAyjHA6cyv9VNMEkwke0Z6lEguqg2xx8QxVrDJEUaxsSYMWqvtrIsNC66kIbafAZqxXvbn4n9dLTXQTZEwmqaGSLBdFKUcmRvP30ZApSgyfWoKJYvZYRMZYYWJsSK5NwV/9eZ20a1X/qnp5Xy836nkeRTiDc7gAH66hAXfQhBYQEPAMr/DmaOfFeXc+lq0FJ585hT9wPn8A7eqQXQ==</latexit> 21 Subcarrier –28 std p2p iqr … Subcarrier 28 std p2p iqr <latexit sha1_base64="pgBfoqmbH3eroXVc3hDQ/7TuQ2c=">AAAB8XicbVDLSgNBEOyNr7i+oh69DIaAp7Ar8XEMePEYwTwkWcLsZDYZMzO7zMwKYclXeBIUxKuf48m/cZLsQRMLGoqqbrq7woQzbTzv2ymsrW9sbhW33Z3dvf2D0uFRS8epIrRJYh6rTog15UzSpmGG006iKBYhp+1wfDPz209UaRbLezNJaCDwULKIEWys9NBLNOtn/HHaL5W9qjcHWiV+TsqQo9EvffUGMUkFlYZwrHXX9xITZFgZRjidupVeqmmCyRgPaddSiQXVQTa/eIoqVhmgKFa2pEFz1f01kWGh9USEtlNgM9LL3kz8z+umJroOMiaT1FBJFouilCMTo9n7aMAUJYZPLMFEMXssIiOsMDE2JNem4C//vEpa51X/snpxVyvXa3keRTiBUzgDH66gDrfQgCYQEPAMr/DmaOfFeXc+Fq0FJ585hj9wPn8AnWWQ0A==</latexit> lj … Time … Time Time Subcarrier –28 Subcarrier 28 … … <latexit sha1_base64="vYcOXklh+gWBP/5fdMQ1Vk+XYCU=">AAAB8XicbVDLSgNBEOyNr7i+oh69DIaAp7Ab4uMY8OIxgnlIsoTZyWwyZGZ2mZkVwpKv8CQoiFc/x5N/4yTZgyYWNBRV3XR3hQln2njet1PY2Nza3inuunv7B4dHpeOTto5TRWiLxDxW3RBrypmkLcMMp91EUSxCTjvh5Hbud56o0iyWD2aa0EDgkWQRI9hY6bGfaDbIav5sUCp7VW8BtE78nJQhR3NQ+uoPY5IKKg3hWOue7yUmyLAyjHA6cyv9VNMEkwke0Z6lEguqg2xx8QxVrDJEUaxsSYMWqvtrIsNC66kIbafAZqxXvbn4n9dLTXQTZEwmqaGSLBdFKUcmRvP30ZApSgyfWoKJYvZYRMZYYWJsSK5NwV/9eZ20a1X/qnp5Xy836nkeRTiDc7gAH66hAXfQhBYQEPAMr/DmaOfFeXc+lq0FJ585hT9wPn8A7eqQXQ==</latexit> 21 <latexit sha1_base64="pgBfoqmbH3eroXVc3hDQ/7TuQ2c=">AAAB8XicbVDLSgNBEOyNr7i+oh69DIaAp7Ar8XEMePEYwTwkWcLsZDYZMzO7zMwKYclXeBIUxKuf48m/cZLsQRMLGoqqbrq7woQzbTzv2ymsrW9sbhW33Z3dvf2D0uFRS8epIrRJYh6rTog15UzSpmGG006iKBYhp+1wfDPz209UaRbLezNJaCDwULKIEWys9NBLNOtn/HHaL5W9qjcHWiV+TsqQo9EvffUGMUkFlYZwrHXX9xITZFgZRjidupVeqmmCyRgPaddSiQXVQTa/eIoqVhmgKFa2pEFz1f01kWGh9USEtlNgM9LL3kz8z+umJroOMiaT1FBJFouilCMTo9n7aMAUJYZPLMFEMXssIiOsMDE2JNem4C//vEpa51X/snpxVyvXa3keRTiBUzgDH66gDrfQgCYQEPAMr/DmaOfFeXc+Fq0FJ585hj9wPn8AnWWQ0A==</latexit> lj … Feature vector 2) CSI 3) 𝑁"#$
30. July 24, 2025 Future University Hakodate 41 (2) ... Time Device 1 Device 2 ... Device n ICA ICA i ICA j Device 1 Device 2 Device n ... ... ... ... 1) CSI (ICA) 2) ICA 3) CSI
31. July 24, 2025 Future University Hakodate n LAN AP 1 : Buffalo WXR-5700AX7S n IoT 9 : Raspberry Pi 3A+ ( : 0 2m) n : Intel Compute Stick n 4 (40 1 30 1 10 2 ) n CSI 24 n : 60 n 500 o ARI : 2LDK ( ) 42 Bedroom Storeroom CL BR WC CL Living Dining Kitchen AP Data Retriever IoT Devices 2 1,3 4,6 5 7 8 9 5.3m 3.5m 2.5m 4.1m ID 1 290663 2358 2 2968 0 3 198929 2357 4 268754 2880 5 0 0 6 308506 2880 7 347484 2880 8 369627 2880 9 247124 2880
32. July 24, 2025 Future University Hakodate n (ARI) o o −1 ≤ ARI ≤ 1 § 1 § 0 n o : ARI 43 Living room Bedroom
33. July 24, 2025 Future University Hakodate n 𝑁!"#$ ARI o ICA( ) 𝑁!"#$ = 1 ARI=0.943 § 𝑁*+,- = 2 ARI=0.991 § 𝑁*+,- ≥ 4 ARI=1.00 o PCA o Random : IoT 44 0 2 4 6 8 10 Nsamp 0.7 0.8 0.9 1.0 Mean ARI ICA PCA Random 44.4%
34. July 24, 2025 Future University Hakodate 45 [joya 23] Design of room-layout estimator using smart speaker, EAI MobiQuitous
35. July 24, 2025 Future University Hakodate 46 1 تُ٭عتم٭؜؅糋ׂדׄך • ٗ٭اסַ׾鼧㷑؅鏀閁 • ٗ٭اסַ׾鼧㷑סظفؕت ؅䳩⛼ → րꝴ⹦׽ցכٗ٭ا亠⺸؅ ؅䫟㲊 ꮟ⮼全亠⺸מ㓹טׂրꝴ⹦׽ց䫟㲊 • ⮼全亠⺸䫟㲊磵冽ס ր䭰׼ׁց؅⮆冪 • ր䭰׼ׁցמ㓹טַי 鼧㷑ׇכמꮟ嶎؅⮆ꦕ • 鼧㷑亠⺸؅䫟㲊 تُ٭عتم٭؜؅榫ַגրꝴ⹦׽ց䫟㲊 0.85 0.71 إ٭ٜ 䬠勅䣆嫎 = + • 鼧㷑亠⺸ׇכסꮟ؅ 䥩⭳ • ䷷䅨ֵ׽㰢綗ٓظٜ ך鼧㷑ס牊걉؅䫟㲊 スマートスピーカには 数本のマイクがある 前提
36. July 24, 2025 Future University Hakodate 47 WPS OK ( ) ( OFF) تُ٭عتم٭؜ ԛ ԛ ԛ
37. July 24, 2025 Future University Hakodate 1. 2. 48
    
    
     
    
    
    
38. July 24, 2025 Future University Hakodate n o § → 49 
            
    
39. July 24, 2025 Future University Hakodate 1. (4 ) 2. Sound Density Map (SDM) o 3. o 4. o 5. 50 Sound Mapper Data Segmentation Clustering Room Type Estimation Steering Vector Sound Data Sound Density Map Room Angle Room Type 1 2 3 4 5
40. July 24, 2025 Future University Hakodate n n AZDEN SGM-990 4 Behringer UMC404HD o 5cm 70cm o 16bit@44.1kHz 51 
        Kitchen Bedroom Living Room Washroom Bathroom Microphones 270cm 350cm 258cm 258cm 350cm 166cm ( 40 ×20) 1: A 2: B DS (10 ) (10 ) (10 ) (10 ) DS DS DS
41. July 24, 2025 Future University Hakodate n o ARI( ) n o : 52 Kitchen Bedroom Living Room Washroom Bathroom Microphones 270cm 350cm 258cm 258cm 350cm 166cm ARI DS 0.897 0.783 DS 0.327 0.683 DS 0.746 0.967 DS 0.925 0.967 全データ 0.725 0.850 3
42. July 24, 2025 Future University Hakodate 53
43. July 24, 2025 Future University Hakodate n IoT o o o § § n o o § 54
44. July 24, 2025 Future University Hakodate n IoT o IoT n o IoT n o : ish@fun.ac.jp o Web: https://pman0214.netlify.app/ 55
45. © 2025 Shigemi ISHIDA, distributed under CC BY-NC 4.0