LED a) A New LED Array Acquisition Method Focusing on Time-Gradient and Space- Gradient Values for Road to Vehicle Visible Light Communication Syunsuk

Similar documents
& Vol.5 No (Oct. 2015) TV 1,2,a) , Augmented TV TV AR Augmented Reality 3DCG TV Estimation of TV Screen Position and Ro

Fig. 2 Signal plane divided into cell of DWT Fig. 1 Schematic diagram for the monitoring system

xx/xx Vol. Jxx A No. xx 1 Fig. 1 PAL(Panoramic Annular Lens) PAL(Panoramic Annular Lens) PAL (2) PAL PAL 2 PAL 3 2 PAL 1 PAL 3 PAL PAL 2. 1 PAL

2007/8 Vol. J90 D No. 8 Stauffer [7] 2 2 I 1 I 2 2 (I 1(x),I 2(x)) 2 [13] I 2 = CI 1 (C >0) (I 1,I 2) (I 1,I 2) Field Monitoring Server

258 5) GPS 1 GPS 6) GPS DP 7) 8) 10) GPS GPS ) GPS Global Positioning System

IPSJ SIG Technical Report Vol.2011-EC-19 No /3/ ,.,., Peg-Scope Viewer,,.,,,,. Utilization of Watching Logs for Support of Multi-

光学

(a) (b) (c) Canny (d) 1 ( x α, y α ) 3 (x α, y α ) (a) A 2 + B 2 + C 2 + D 2 + E 2 + F 2 = 1 (3) u ξ α u (A, B, C, D, E, F ) (4) ξ α (x 2 α, 2x α y α,

(a) 1 (b) 3. Gilbert Pernicka[2] Treibitz Schechner[3] Narasimhan [4] Kim [5] Nayar [6] [7][8][9] 2. X X X [10] [11] L L t L s L = L t + L s

1 Kinect for Windows M = [X Y Z] T M = [X Y Z ] T f (u,v) w 3.2 [11] [7] u = f X +u Z 0 δ u (X,Y,Z ) (5) v = f Y Z +v 0 δ v (X,Y,Z ) (6) w = Z +

2). 3) 4) 1.2 NICTNICT DCRA Dihedral Corner Reflector micro-arraysdcra DCRA DCRA DCRA 3D DCRA PC USB PC PC ON / OFF Velleman K8055 K8055 K8055

スライド 1

3D UbiCode (Ubiquitous+Code) RFID ResBe (Remote entertainment space Behavior evaluation) 2 UbiCode Fig. 2 UbiCode 2. UbiCode 2. 1 UbiCode UbiCode 2. 2

2003/3 Vol. J86 D II No Fig. 1 An exterior view of eye scanner. CCD [7] CCD PC USB PC PC USB RS-232C PC

橡 PDF

IPSJ SIG Technical Report iphone iphone,,., OpenGl ES 2.0 GLSL(OpenGL Shading Language), iphone GPGPU(General-Purpose Computing on Graphics Proc

Input image Initialize variables Loop for period of oscillation Update height map Make shade image Change property of image Output image Change time L

UWB a) Accuracy of Relative Distance Measurement with Ultra Wideband System Yuichiro SHIMIZU a) and Yukitoshi SANADA (Ultra Wideband; UWB) UWB GHz DLL

(3.6 ) (4.6 ) 2. [3], [6], [12] [7] [2], [5], [11] [14] [9] [8] [10] (1) Voodoo 3 : 3 Voodoo[1] 3 ( 3D ) (2) : Voodoo 3D (3) : 3D (Welc

36 581/2 2012

1

スライド 1

知能と情報, Vol.30, No.5, pp

IPSJ SIG Technical Report Vol.2016-CE-137 No /12/ e β /α α β β / α A judgment method of difficulty of task for a learner using simple

4. C i k = 2 k-means C 1 i, C 2 i 5. C i x i p [ f(θ i ; x) = (2π) p 2 Vi 1 2 exp (x µ ] i) t V 1 i (x µ i ) 2 BIC BIC = 2 log L( ˆθ i ; x i C i ) + q

Fig. 3 Flow diagram of image processing. Black rectangle in the photo indicates the processing area (128 x 32 pixels).

(MIRU2008) HOG Histograms of Oriented Gradients (HOG)

(a) (b) 2 2 (Bosch, IR Illuminator 850 nm, UFLED30-8BD) ( 7[m] 6[m]) 3 (PointGrey Research Inc.Grasshopper2 M/C) Hz (a) (b

5b_08.dvi

DPA,, ShareLog 3) 4) 2.2 Strino Strino STRain-based user Interface with tacticle of elastic Natural ObjectsStrino 1 Strino ) PC Log-Log (2007 6)

IPSJ SIG Technical Report 1,a) 1,b) 1,c) 1,d) 2,e) 2,f) 2,g) 1. [1] [2] 2 [3] Osaka Prefecture University 1 1, Gakuencho, Naka, Sakai,

3 2 2 (1) (2) (3) (4) 4 4 AdaBoost 2. [11] Onishi&Yoda [8] Iwashita&Stoica [5] 4 [3] 3. 3 (1) (2) (3)

9_18.dvi

[2] OCR [3], [4] [5] [6] [4], [7] [8], [9] 1 [10] Fig. 1 Current arrangement and size of ruby. 2 Fig. 2 Typography combined with printing

Vol.55 No (Jan. 2014) saccess 6 saccess 7 saccess 2. [3] p.33 * B (A) (B) (C) (D) (E) (F) *1 [3], [4] Web PDF a m

IPSJ SIG Technical Report Vol.2014-DPS-158 No.27 Vol.2014-CSEC-64 No /3/6 1,a) 2,b) 3,c) 1,d) 3 Cappelli Bazen Cappelli Bazen Cappelli 1.,,.,.,

27 AR

Accuracy Improvement by Compound Discriminant Functions for Resembling Character Recognition Takashi NAKAJIMA, Tetsushi WAKABAYASHI, Fumitaka KIMURA,

THz 300THz nm VLC LED 2. 1 VLC VLC VLC 2. 2 VLC VLC VLC LED VLC 10 VLC 2003 VLC Consortium VLCC [11] VLC VLCC VLC LED LED LED 2010 LED

IPSJ SIG Technical Report GPS LAN GPS LAN GPS LAN Location Identification by sphere image and hybrid sensing Takayuki Katahira, 1 Yoshio Iwai 1

a) Extraction of Similarities and Differences in Human Behavior Using Singular Value Decomposition Kenichi MISHIMA, Sayaka KANATA, Hiroaki NAKANISHI a

1 4 4 [3] SNS 5 SNS , ,000 [2] c 2013 Information Processing Society of Japan

dsample.dvi

sumi.indd

IPSJ SIG Technical Report 1, Instrument Separation in Reverberant Environments Using Crystal Microphone Arrays Nobutaka ITO, 1, 2 Yu KITANO, 1

パナソニック技報

０８０１３９１，繊維学会ファイバ１２月号／報文－０１－西川

A Feasibility Study of Direct-Mapping-Type Parallel Processing Method to Solve Linear Equations in Load Flow Calculations Hiroaki Inayoshi, Non-member

2. CABAC CABAC CABAC 1 1 CABAC Figure 1 Overview of CABAC 2 DCT 2 0/ /1 CABAC [3] 3. 2 値化部 コンテキスト計算部 2 値算術符号化部 CABAC CABAC

Microsoft Word - toyoshima-deim2011.doc

1 Web [2] Web [3] [4] [5], [6] [7] [8] S.W. [9] 3. MeetingShelf Web MeetingShelf MeetingShelf (1) (2) (3) (4) (5) Web MeetingShelf

Study on Throw Accuracy for Baseball Pitching Machine with Roller (Study of Seam of Ball and Roller) Shinobu SAKAI*5, Juhachi ODA, Kengo KAWATA and Yu

光学

ID 3) 9 4) 5) ID 2 ID 2 ID 2 Bluetooth ID 2 SRCid1 DSTid2 2 id1 id2 ID SRC DST SRC 2 2 ID 2 2 QR 6) 8) 6) QR QR QR QR

SICE東北支部研究集会資料(2012年)

Run-Based Trieから構成される 決定木の枝刈り法

Table 1. Reluctance equalization design. Fig. 2. Voltage vector of LSynRM. Fig. 4. Analytical model. Table 2. Specifications of analytical models. Fig

IPSJ SIG Technical Report Vol.2012-HCI-149 No /7/20 1 1,2 1 (HMD: Head Mounted Display) HMD HMD,,,, An Information Presentation Method for Weara

Visual Evaluation of Polka-dot Patterns Yoojin LEE and Nobuko NARUSE * Granduate School of Bunka Women's University, and * Faculty of Fashion Science,


1., 1 COOKPAD 2, Web.,,,,,,.,, [1]., 5.,, [2].,,.,.,, 5, [3].,,,.,, [4], 33,.,,.,,.. 2.,, 3.., 4., 5., ,. 1.,,., 2.,. 1,,


EQUIVALENT TRANSFORMATION TECHNIQUE FOR ISLANDING DETECTION METHODS OF SYNCHRONOUS GENERATOR -REACTIVE POWER PERTURBATION METHODS USING AVR OR SVC- Ju

IPSJ SIG Technical Report Vol.2012-CG-149 No.13 Vol.2012-CVIM-184 No /12/4 3 1,a) ( ) DB 3D DB 2D,,,, PnP(Perspective n-point), Ransa

COM COM 4) 5) COM COM 3 4) 5) COM COM 6) 7) 10) COM Bonanza 6) Bonanza Hearts COM 7) 10) Hearts 3 2,000 4,000

untitled

IPSJ SIG Technical Report Vol.2010-GN-74 No /1/ , 3 Disaster Training Supporting System Based on Electronic Triage HIROAKI KOJIMA, 1 KU

パナソニック技報

一般社団法人電子情報通信学会 THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGIN

.,,, [12].,, [13].,,.,, meal[10]., [11], SNS.,., [14].,,.,,.,,,.,,., Cami-log, , [15], A/D (Powerlab ; ), F- (F-150M, ), ( PC ).,, Chart5(ADIns

& Vol.2 No (Mar. 2012) 1,a) , Bluetooth A Health Management Service by Cell Phones and Its Us

2006 [3] Scratch Squeak PEN [4] PenFlowchart 2 3 PenFlowchart 4 PenFlowchart PEN xdncl PEN [5] PEN xdncl DNCL 1 1 [6] 1 PEN Fig. 1 The PEN

3. ( 1 ) Linear Congruential Generator:LCG 6) (Mersenne Twister:MT ), L 1 ( 2 ) 4 4 G (i,j) < G > < G 2 > < G > 2 g (ij) i= L j= N

Silhouette on Image Object Silhouette on Images Object 1 Fig. 1 Visual cone Fig. 2 2 Volume intersection method Fig. 3 3 Background subtraction Fig. 4

IPSJ SIG Technical Report Vol.2013-CVIM-188 No /9/2 1,a) D. Marr D. Marr 1. (feature-based) (area-based) (Dense Stereo Vision) van der Ma

特別寄稿.indd

2005ITRC-symposium-presen

23 Fig. 2: hwmodulev2 3. Reconfigurable HPC 3.1 hw/sw hw/sw hw/sw FPGA PC FPGA PC FPGA HPC FPGA FPGA hw/sw hw/sw hw- Module FPGA hwmodule hw/sw FPGA h

On the Limited Sample Effect of the Optimum Classifier by Bayesian Approach he Case of Independent Sample Size for Each Class Xuexian HA, etsushi WAKA

IPSJ SIG Technical Report Vol.2009-DPS-141 No.20 Vol.2009-GN-73 No.20 Vol.2009-EIP-46 No /11/27 1. MIERUKEN 1 2 MIERUKEN MIERUKEN MIERUKEN: Spe

Abstract This paper concerns with a method of dynamic image cognition. Our image cognition method has two distinguished features. One is that the imag

1611 原著 論文受付 2009 年 6 月 2 日 論文受理 2009 年 9 月 18 日 Code No. 733 ピクセル開口率の向上による医用画像表示用カラー液晶モニタの物理特性の変化 澤田道人 石川晃則 1) 松永沙代子 1) 1) 石川陽子 有限会社ムツダ商会 1) 安城更生病院放射

1 2 3 マルチメディア, 分散, 協調とモバイル (DICOMO2013) シンポジウム 平成 25 年 7 月.,.,,.,. Surrogate Diner,., Surrogate Diner,, 3,, Surrogate Diner. An Interface Agent for Ps

IPSJ SIG Technical Report Vol.2014-DBS-159 No.6 Vol.2014-IFAT-115 No /8/1 1,a) 1 1 1,, 1. ([1]) ([2], [3]) A B 1 ([4]) 1 Graduate School of Info

０１３８５８，繊維学会誌ファイバー１月／報文－０２－古金谷

Vol. 45 No. 12 Dec ITS, ITS 1 30 m Evaluation of Autonomous Decentralized System Based Mobile Communications Platform for ITS Services Masashi H

IS1-09 第 回画像センシングシンポジウム, 横浜,14 年 6 月 2 Hough Forest Hough Forest[6] Random Forest( [5]) Random Forest Hough Forest Hough Forest 2.1 Hough Forest 1 2.2

guideline_1_0.dvi

[1] SBS [2] SBS Random Forests[3] Random Forests ii

THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS TECHNICAL REPORT OF IEICE {s-kasihr, wakamiya,

3_23.dvi

MDD PBL ET 9) 2) ET ET 2.2 2), 1 2 5) MDD PBL PBL MDD MDD MDD 10) MDD Executable UML 11) Executable UML MDD Executable UML

Sobel Canny i

第６２巻　第１号　平成２４年４月／石こうを用いた木材ペレット

1 1 CodeDrummer CodeMusician CodeDrummer Fig. 1 Overview of proposal system c

Vol.54 No (July 2013) [9] [10] [11] [12], [13] 1 Fig. 1 Flowchart of the proposed system. c 2013 Information

DEIM Forum 2014 D3-5 DSMS DSMS DSMS 2.13% RTOS Realtime-Aware Efficient Query Processing for Automotiv

IPSJ SIG Technical Report Vol.2014-MBL-70 No.49 Vol.2014-UBI-41 No /3/15 2,a) 2,b) 2,c) 2,d),e) WiFi WiFi WiFi 1. SNS GPS Twitter Facebook Twit

1 Fig. 1 Extraction of motion,.,,, 4,,, 3., 1, 2. 2.,. CHLAC,. 2.1,. (256 ).,., CHLAC. CHLAC, HLAC. 2.3 (HLAC ) r,.,. HLAC. N. 2 HLAC Fig. 2

LAGUNA LAGUNA 8 p Saline wedge at River Gonokawa, Shimane Pref., Japan Saline water intrusion at estuary r

Transcription:

VOL. J97-B NO. 7 JULY 2014 本 PDF の扱いは 電子情報通信学会著作権規定に従うこと なお 本 PDF は研究教育目的 ( 非営利 ) に限り 著者が第三者に直接配布することができる 著者以外からの配布は禁じられている

LED a) A New LED Array Acquisition Method Focusing on Time-Gradient and Space- Gradient Values for Road to Vehicle Visible Light Communication Syunsuke USUI a), Takaya YAMAZATO, Hiraku OKADA, Toshiaki FUJII, Keita TAKAHASHI, Tomohiro YENDO, and Shintaro ARAI LED LED LED LED LED LED 2 LED 1. LED [1] [5] LED LED LED LED Nagoya University, Furo-cho Chikusa-ku Nagoya-shi, 464 8603 Japan Nagaoka University of Technology, Nagaoka-shi, 940 2137 Japan Kagawa National College of Technology, Mitoyo-shi, 761 8058 Japan a) E-mail: usui@katayama.nuee.nagoya-u.ac.jp [6] LED LED LED LED LED LED LED LED LED LED LED LED LED 536 B Vol. J97 B No. 7 pp. 536 545 c 2014

LED LED LED [6] LED LED LED LED [7] 2 LED LED LED LED LED [8] LED LED LED LED 2 LED LED LED [9] LED LED LED ( ) 2. 3. 4. 5. LED 6. 7. [8] 2. 1 256 LED 16 16 LED ON-OFF ON- OFF (OOK) LED OOK LED LED OOK LED LED LED LED [10] LED LED 1 Fig. 1 System model. 537

2014/7 Vol. J97 B No. 7 2 Fig. 2 Packet format. 3 Fig. 3 Captured images in time series. ( ) LED LED 2 LED LED 2 LED 3. LED [8] 3. 1 3 LED ON OFF 4( ) y = N 4( ) (x, t) 3. 2 LED LED LED 4( ) 4 Fig. 4 Spatio-temporal image and Spatio-temporal cross-section imege. LED LED LED 4( ) LED 4. 4. 1 5. 1 LED 5 (G t) (G s) LED 90m LED LED LED LED LED 538

LED Fig. 5 5 Scatter diagram of time/space gradient value. 6 10 Fig. 6 Scatter diagram of time/space gradient value (averaging 10 frames). LED LED LED 2 5 LED LED LED 2 4. 2 LED 1000fps LED LED 10 6 LED LED LED 6 G t a G s b 0 (1) LED a b G t 5. LED LED k LED 5. 1 I(x, y, t) Sobel Sobel [11] t = n G t(x, y, n) G s(x, y, n) G t(x, y, n) = {G t1} 2 + {G t2} 2 1 1 G t1 = s 1(k, l)i(x + k, y, n + l) k= 1 l= 1 539

2014/7 Vol. J97 B No. 7 G t2 = 1 k= 1 l= 1 1 s 1(k, l)i(x, y + k, n + l) (2) G s(x, y, n) = {G s1} 2 + {G s2} 2 1 1 G s1 = s 1(k, l)i(x + k, y + l, n) G s2 = k= 1 l= 1 1 k= 1 l= 1 1 s 2(k, l)i(x + k, y + l, n) (3) s 1(k, l) s 2(k, l) Sobel 1 2 1 s 1(k, l) = 0 0 0 1 2 1 1 0 1 s 2(k, l) = 2 0 2 (4) 1 0 1 5. 2 k G t(x, y, n) G s(x, y, n) G t(x, y, n) = 1 k 1 G t(x, y, n l) (5) k l=0 G s(x, y, n) = 1 k 1 G s(x, y, n l) (6) k l=0 5. 3 LED LED D(x, y, n) { 255 (A satisfied) D(x, y, n) = (7) 0 (otherwise) A : G t(x, y, n) a G s(x, y, n) b 0 a b a b G t D(x, y, n) 255 LED LED D(x, y, n) LED LED D(x, y, n) LED D(x, y, n) 1 LED 2 1 LED 5. 4 D(x, y, n) 255 c r pixel LED 6. 5. k a G t b 6. 1 a b [9] a b a b 6 a =0.18082 b =73.344 a b 6 7 LED LED LED 50pixel 50 pixel LED a b 2 KL [9] k LED LED KL k k k 540

LED 8 90m Fig. 8 Captured images from distance 90m. 7 Fig. 7 Discriminant line by Fisher s linear discriminant. 1 Table 1 Parameters of experiment. LED blinking frequency 500Hz Capturing frame rate 1000fps Distance from LED 30m 90m LED blinking pattern On/Off Random Vehicle speed 30km/h Time Weather Daytime Sunny Image resolution 1024 512pixel 9 LED Fig. 9 LED Array at each distances. 6. 2 1 30km/h LED 90-30m 90m 30m LED LED 8 90m 9 30m 50m 70m 90m LED LED LED LED LED 10 LED Fig. 10 Blinking pattern. LED ( ) LED LED LED On/Off( 10 ( )) Random( 10 ( )) On/Off LED ON OFF Random LED Random LED [12] S S(x, y, n) =G t(x, y, n) a G s(x, y, n) (8) 541

2014/7 Vol. J97 B No. 7 11 k Fig. 11 Number of false flames versus k. 12 Random 30m Fig. 12 Scatter diagram (Blinking pattern Random, distance 90m). b b = ϕ max{g t(x, y, n) a G s(x, y, n)} (9) S ϕ b S LED LED 1 LED LED b 6. 3 k 4. 2 LED LED LED a ϕ k 500 a =0.7 ϕ =0.7 6. 4 6. 5 13 Random 90m Fig. 13 Scatter diagram (Blinking pattern Random, distance 90m). 11 k 14 k =15 Random 90m Random 20m LED ( ) LED LED 12 13 Random 15 30m 90m LED 542

LED 14 a Fig. 14 Survival LED pixels versus a. 15 ϕ Fig. 15 Number of false flames versus ϕ. 6. 4 a LED 5 5pixel LED (8) S LED S S LED ( ) LED LED (5. 3 (1) (2)) 15 a 10 14 average a average a =0.7 6. 5 G t b a =0.7 k =15 (9) ϕ 500 ϕ 15 ϕ 0.7 16 Fig. 16 Result of comparing with conventional method. ϕ Random 90m 6. 3 6. 6 a =0.7 k =15 ϕ =0.7 [7] 1 10m 500 500 on/off 100% 543

2014/7 Vol. J97 B No. 7 Random 16 62% 11% LED LED 100% 7. LED LED LED LED LED 2 LED LED LED LED JSPS C 23560449 [1] T. Komine and M. Nakagawa, Fundamental analysis for visible-light communication system using LED lights, IEEE Trans. Consum. Electron., vol.50, no.1, pp.100 107, Feb. 2004. [2] G.-K.-H. Pang, C.-H. Chan, and T.T.O. Kwan, Tricolor light-emitting diode dot matrix display system with audio output, IEEE Trans. Ind. Appl., vol.37, no.2, pp.534 540, March/April 2001. [3] H.-S, Liu and G. Pang, Positionning beacon system using digital camera and LEDs, IEEE Trans. Veh. Technol., vol.52, no.2, pp.406 419, March 2003. [4] LED CS2005-131, March 2006. [5] M. Akanegawa, Y. Tanaka, and M. Nakagawa, Basic study on traffic information system using LED traffic lights, IEEE Trans. Intelligent Transportation Systems, vol.2, no.4, pp.197 203, Dec. 2001. [6] M. Wada, T. Yendo, T. Fujii, and M. Tanimoto, Road-to-vehicle communication using LED traffic light, IEEE Intelligent Vehicles Symposium 2009, pp.179 184, June 2009 [7] B vol.j95-b, no.11, pp.1517 1528, Nov. 2012. [8] S. Usui, T. Yamazato, S. Arai, T. Yendo, T. Fujii, and H. Okada, Utilization of spatio-temporal image for LED array acquisition in road to vehicle visible light communication, ITS WORLD CONGRESS TOKYO 2013, Oct. 2013 [9] C.M. Bishop, Pattern Recognition and Machine Learning, Springer, 2006. [10] Y. Shiraki, T. Nagura, T. Yamazato, S. Arai, T. Yendo, T. Fujii, and H. Okada, Robust receiver design for road-to-vehicle communication system using LED array and high-speed camera, 18th World Congress on Intelligent Transport Systems, Oct. 2011 [11] W.K. Pratt, Digital image processing, Wiley- Interscience publication, New York, 1978. [12] T. Nagura, T. Yamazato, M. Katayama, T. Yendo, T. Fujii, and H. Okada, Tracking an LED array transmitter for visible light communications in the driving situation, IEEE International Symposium on Wireless Communication Systems (ISWCS2010), pp.765 769, Sept. 2010. 25 10 29 26 2 24 24 ITS IEEE 544

LED 63 2 5 10 19 22 9 10 25 ITS e IEEE 7 9 11 12 18 21 23 IEEE ACM 8 10 25 ComEX Best Letter Award 8 10 13 ( ) 10TAO 3D 14JST CREST 16 19 23 3 23 VR IEEE 16 18 21 ITS 23 ITS ITS 20 IEEE 2 7 15 20 23 24 3 3 ITS 8 IEEE 13 18 IRT 3 545

2024 © docsplayer.net プライバシー | 利用規約 | フィードバック