静止画像の可逆圧縮・高速転送に関する試行
Contents
1. nmn HH LAN nn I Capt ur eG aphBui der 2 Set Fi tergraph lt I G aphBui der AddFi ter uUuununnunnunnnun I Capt ur eG aphBui der2 Render amp reant 900000 I Sanpl eGrabber Get Connect edMedi aType 2 0000000 Sanpl eGrabber Set Buf f er Sanpl es Sanpl eGrabber Set MeShot 21 USB DOD I Sanpl eGrabber Set Cal back 0000000 USB UUPCUDUU We O nr Sanpl eGrabber2. G GrabStart slBegnReceive 000000 c Send sLEndReceive c BegnReceive DHASEGBDIDUUBHED s1 Send 000000 O 6000000000 c EndReceive N4 ON NONONG 03 000000000000 9 Send End ACK 3 LAND DI TI GrabStart 3100000 Call Back 14 1 CP IP 100Mbps 1Gbps LAN 4 4 0000000 15 41 0000000000 6 7 3 5 6 6 ACK Acknowledge LAN 4 32 00000 C Draw Image Save ACK DirectShow BMP TIFF GIF PNG JPEG p 10ms ACK g a H MI APA LINA AR 05 000000000 02 D000000000000000000 9719 BMP OO000000 24 bits pixel Tag OD DOM inu i Image Tag L1 0 B B U BE NE File 24 bits pixel mec Forrret 0000000000 ImegeFronStreart Jr Graphics T000 nwa n Imege 0000000 D aa i Interchange 8 bits pixel 256 Ma Format O O 00000000 xem Portable O00 0 0277200 Huffman unnnacknnu jJ Network 24 bits pixel kanga Graphics 000000 mnn J oint oogg 0000000 Photographic 24 bits pixel 0000000000 a San Nl 07 QOQOQO00000000000000000000 Do00000000000000GIF0O000000 42 0000000 D00000000 2560000000000000 ggggaaaguuuiieeattuttut 000000000000
3. 6 000 USB 1 LAN D E UL DI LT L uL C 7 Draw mage Save mage 1 4 PNG OOO 0 0 000 O low complexity 0 1 U B D OO 14 N00 1 N0 O0 0000000000 do00000 LANG 8 I el 9 HOOD 20000000000000000 D000000000 000 14000000000 00000000000 2003 Microsoft Visual Studio NET Professional Edition Version 2002 Qcam Pro 4000 0D 000000000000 2003 00000 YVSBOO00 CH 000 0 http mobi quitous com tsuka programming usbcamera html 2003 NETMaster DirectShow NET http www codepro ject com cs media directshownet asp 2003 DODO DODO OO DDDDBDUDU LAN OO 0000 C HO000000000000000 U OO 150000000000000 00 0 2004 O0O00000000000000L0 O NET Frame work D B 00000 Microsoft Visual Studio NET 2003 D C Kay andJ R Levine j 0 MbCD 1 000000 00000000000000 0 0 0 00 0 1995 J Miano Compressed Image File Formats Addison Wesley Longman Inc 1999 10 G Roelofs PNG The Definitive Guide O Reilly amp Associates Inc 1999
4. 03 000000000000 0000 0000 000 DA F s F s Bytes BMP 102 341 230 454 TIFF 72 185 202 893 GIF 105 251 36 425 PNG 7 8 168 140 058 J PEG 109 30 0 12 366 00000000 D D O Pentium 2GH4 1 LZWIT kajisal2 172 16 11 173 172 16 11 172 04 LAN 100Mps 0 O D i aai NAIN EN BB oop Bond nooo DDD F s F s Bytes BMP 213 469 230 454 5 00000 TIFF 16 0 29 4 212 420 GIF 22 0 384 42 720 DLE PNG 165 271 1442
5. DD DO Net Sockts Socket s s1 s Bind s Listen s BeginAccept 000000 s EndAccept DAA Aaaa Net Sockts Socket c Net Dns Resolve S Send c Connect E End
6. 36000000000000000000 10000 DO 00000 140000000 YO Visual Cr OOOOO0000 LAN DOON DON DD U CCDJDDUDUUUBDUUBDBDDDD 512x 440 D0 0000000 800000000 5 FramefSec DODO ONDDO NONONO ooo pD gagpnupnupnupnupnupnaupauggouuu p ggpnupnupnupnupnupnupaugagogadu DOON DD OD BM OO YU OD 0D DON 0NDDDDO C 0000 Dinagpngua anugpnuanagnpnauagnmnuunp Dp pnunununuaoupnagaugagagpuud OO cepgnaugnugunugnugnaugnu UUDUDUDUDUDDUUDUDUUUDUDBUUDUDDUUDDUDUDDU PONDO NN NONONO DD DD DD DO DODO NON NO NONONO DD DDDD 0 OWindowsQOOOOU000000000000 UUDUDDUUDDUUUDBDDUUBDDUUDBDUDUD USB OOOOPCOOOO wo ANAO OO UUSBIUDDDUUUuu CCDIUDDBDUUUULU 000090 2 6 U 1 DrectShw JHUUDUUDUDDUUUDUDUUuUnuNu a interface DEhowET pr I BaseFi ter 0000000000000 a I G aphBui der 000 0000000 af E CaptureG aphBui der2 0 0000000 000000 m i Sanpl eGrabber 000 DO 000 00 00O x i Madi aCont rol 000 00000000000 M deoW ndow DUDDDUDDUDUDUD 0 2 WBOOOOOD Medi aEvent Ex 0000000000 b cl ass D5howNETT OHOOO0000000000 tL ctMicrosoft Visual M deol nf oHeader Medi aType Studio NET 2 Visual C DB E D UL OL OE EE DE C LI Devi ce AMedi aType O Visual C Visual CH Visual Basicg 1 O Pi nCat egory EL EIER ED ap o ERE Pa EIER ERE EET TE c UD 00 Dbhowr
7. CB Buf f er CX 00000090 Ul USBIJUUDUUDUDUDUU CCDOO0000 I M deoW ndow Set Vi ndovPosi t i on 21000000 3500000 300000000 Medi aEvent Ex Get Event 160x 1200 320x 240 0 00 640x 4800 O00 Medi aEvent Ex Fr eeEvent Par ans HEPEEBOBE BET EDT BU 000000000000 0 200000 usB DI 20 320x 2400000 EE AYE O VFW Video For 22 0000 Windows DOOOOOOOO0C 0O000000 USE DE B BO drop ER DAE EG HUD OOOVFWQ DiretX 0000000 Microsoft DirectX DirectShow N00 OHOOOOUOVFWQOOQOU0DUdCOO DirectX 3D I O00 TANAN USB O ON OONNN NN 000000000 gwag mE JUUDUDUDDDDDDDDUJDAPI 000090 DiretShow 000000000000 0 00 DirectShow 0 g uugmgmauggu 10000 EUHEBHEBIL TON onan DirecShow D000 USB HI B DU D ul 00 APIHnm l 1 U Windows XP LO EL E DLE E D E E EE EE E EE EE E EE EE DE L 0 0000 DiretX8 1 0 J HoOdgddg uggguidaoguuagggudtdageetttuettlu DirectX9 0b Microsoft 000000000090 uugmggugugHuguzsmtliutttgzttdttltttdattLu 000000000000 windows XP BU ugggggmuguggmgmgggditgutldtdttttl DirectX9 0b Bi 000000 DDirectShow uggggagmguggmgmggudigtgutldtdttttl 00000 VBO cog gua CHOO HO BIB rt u 0 render uggencainuugaggguguddatmrtdsat 1 U LI L HH B D B E UE LU D lU OO0000000000 TheCode 0000000000 SetCallBack POOO Project 000000 DShowNET dl 52KB gt uBgguguggggdgdadagmgmuugu RGB 00 000 Bitmap 0000000090
8. 0 200000000 gdgaggadenmutduuldatesartttutl O 4000000000000000000000 000000000 700000000000000 DODO 000000 000000000000 00 OO 000 000000000000 000 00000 70000000 0 230 454 0 00 00 BMP 0 00 O HACK Acknow D00000000000 0 DiretShow 0 000 ledge 000000000000000 00000 ugggamnnagagaagadggguguuguumuanagau gdaggagaguuaegegegttcieut utu ugggamnnagaagaagdggguguuumumuaagau 0000000 SystemDrawing mage 0 0 O O O POOO stream NOO000000000000 P000 0000000 Image NOOD 000000 PONDO DONG N Image O 00000000000000000000000 0000000 Image Save 0 0000000000 mage O NOO 000000000000000 P000 000000000000000000000 D000000000000000 000000000 Pigsa TWIT Eam TS Pari Hs _am Agente ascen lone Get Hmi B ent Peek ERT E imena Fi maga quema en 0000000000 0000 000000 DUUUDUDUDU _ Acknowledge kajisall
9. 00 ES i x a Apa JPEG 279 440 12560 It on entium 4 TU MM r hF 2 4GHz Pentium 4 2GHz 0000000 Pentium 24GH2 0 0 0 O Pentium 2GHz 0 5 LAN 100Mps 0 O O F rame Sec dnm 0000 0000 000 0 Frame Secl 00 1000 F s F s Bytes BMP 13 7 32 4 230 454 TIFF 10 5 20 4 203 700 GIF 15 2 21 2 39 790 ge zs Viele PNG 117 192 134 600 3 J PEG 171 327 11210 0000000 Pentiumt 2GHz 000 O Pentiun4 2 4GHz BMP 34 1 F rame Sec J PEG 30 0 F rame Sec GIF TIFF PNG 4 3 JPEG GIF 30 F rame Sec BMP JPEG BMP 2 3 GIF MP ACK BMP BMP TIFF 7594 JPNG 7794 5 3 LAN 100Mbps 0 O 0 l PNG 100M bps 1 BMP 63 8 4 LAN 5 4 6 5
10. HUU IU L uum uu Feasibility Study of Lossless Compression and Fast Transfer of Still mages Kiyomitsu KAJ ISA For the purpose of applications of remote product tests and remote product monitoring to verify whether the lossless image compression is useful or not from the view point of the speed of continuous transfer of still images using a non expensive USB camera we implemented test programs and tested Results using PNG and TIFF images by standard lossless image compression show that overhead caused by the lossless compression and decompression introduces approxi mately 1 4 transfer delay compared with the case of no image compression though the transfer speed of the compressed images themselves is shorten This technical paper reports the method of capturing still images asynchronously using a USB camera and transferring images via 100Mbps LAN asynchronously implementation of an image capture dient test program and an image display server test program experiments and results of using the test programs and considerations of the experiments Keywords Lossless Compression Still Image USB Camera TCP IP C Sharp 1 0000 000 USHUANI UUDUDUDBUBDUUDUDUUDBUDUDUDUUDUBDBDUUDBDUUDU UUDUDUDUDUUDUUDBDUUDUDBDUDUDI UUIDDBDUUDUDBDUDUDUUDDUUUDBDBUUDUDDUDUDU DUN DON DDO NONONO ooo DODO OO NDONDODO LANGONI DODO OO OO NONONO ODDNO UUIDUDUDDBDUUDUDUUDUUHDDUUDBDBDUDUDU DODO OO BOND NDN PONDO NDN NDN Wooo CCD OOO00 d00000000000000000
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