Giai pliap ticli lioip xay dung lie thong cung cap anh quang canh 360 do dirdng pho Ha Noi
Nguyin Chi Cong'" - NguyAn Hal CItau"" - Nguyin Ngpc Hda""
^ ^4
Tom tat: Hien nay, co nhieu djch vy cung cap anh 360 do tai mot so thanh phd Idn tren the gidi nhi;
Google Streetview, MapJack,... Viec ket hap djch vg b^n do s6 tri/c tuyen va anh 360 do da mang lai cho ngudi dung nhOng trai nghiem nhi; duoc dimg tai vj tri chup, nang cao tinh trtfc quan va hien thi/c.
Bai bao nay tap trung lam ro giai phap tich hap cho phep xay di/ng he thong cung cap anh 360 do di/dng pho Ha Npi triic tuyen tren Internet, gidi thieu c^c thanh ph^n cung nhi/ nhiJng ky thuat chinh cua he thong nay. NhOng ket qua thu du"ac cua gicii phap la tien de cho nhOng md rpng xay dung mang xa hoi, phuc vu cdng dong.
i.Mdilau
Anh 360 dd la Inh chyp td may Inh sd hoac phim, hoac tii'eh ra td mdt ti'ame trong mdt doan wdeo. cho phep ngudi xem cd the nhin thay quang canh xung quanh vcfi gdc nhin 360 dp tiieo phuong ngang. Gdc nhin tiieo phuong dpc cua anh phg tiiudc vao tinh nSng thiet bi nhu may Inh, dng kinh, thudng Idn hPn lOOo [151. Mdt he thdng cung d p anh quang canh 360 dd eho phep ngudi sir dung cd till xem cac anh quang dnh 360 dd, ddng tiicB cd thi sddung con chudt hoac ban phim de h/dng tac VCR he tiidng va di ehuyin td quang canh nay sang quang dnh khac, tao cam giae nhu ho dang diiig tai not chup anh. Tren thi gidi hien nay ed nhieu \\h ttidng eung cap anh quang dnh nhuGoogle Sti-eet View [8], MapJack [9], FotoCalle [10]. Trong sd dd, Google Street View la he thdng Idn nhat va cd anh quang dnh d rat nhilu nude tren ttie gidi. Tuy vSy, anh quang canh cua Viet Nam, dae btdt la cac tiianh phd chinh nhu Ha Ndi, TP.Hd Chi Minh v.v.. ehua cd ti'ong eae he tiidng b'dn. Hien tai d Viet Nam vln chua ed mpt he ttidng nao eung d p anh quang dnh 360 dp m^c dii anh quang d n h 360 dd ddn le khdng phai la mdi d Viet Nam.
Anh quang dnh 360 dd kit hdp vdi tfidng tin dia ly va thdng tin md ta mang den cho ngudi sd dung mdt gde nhin ti/ang ddi day dit ve khu vuc minh quan tam, cd the dng dung trong nhilu finh vUc nhudu lieh, quang ba dia danh, gidi thieu npi that V.V..
Bdi vay, giai phap ti'ch hpp xay dung he thdng cung d p anh quang canh 360 dp cd the ap
Preci3i6r de capiura sobmetnca. GPS*Glofi3!S Auiicaciones para Web. Oesktoci y Uobihdad
Panoraniicas 360 de tiasla errriie crea/ y ctvnpanii punios de i m e m Coneuon ax\ lerceros a travts de Webserv>ces
?oom de alia lesolijCiOn y estructura Biramidal Visw Flasd / Flei con Google Maps Aoiicaciones de nealKlad Aumentada
r . i i ^ s a Fci'ig'atica Re'lei
er bi c '•0 do cua FotoCalle
dgng eho tat ca cac vj tri dia ly d \flet Nam.
Phidn bSn dau tidn ciia he thdng, dUtjc thd nghi$m voi dd lidu la inh chgp t^i mdt sd dudng phd va dia dilm n6i tieng cua Ha Npi- Bai bdo nay ngoai ph^n md d^u edn cd phcin 2 gidi thieu ve mpt sd hd thdng sSn cd tren thi gidi; phan 3 md ta cac ydu ch can ban ciJa mdt he tiidng anh quang canh 360; ph^n 4 md ta giai phap thgc hi^n cua nhdm tac gia va cudi cung, ph^n 5 dua ra eac tfiao luan cho vide ilhg dung he ttidng va phuong hudng phat triln tiep tiieo.
2. Mot sA he thdng cung c ^ anh quang canh tren t h i gidi
2.1 Goo^ Street View
Google street View la dich vu dupe phat tnen dUa ti'en nIn Google Maps va Google Earth, cung cap toan dnh lUOt xem tU cac vi ti^i khac nhau doc theo rat nhieu dUdng phd ti'en thi gidi. Djch vu nay dUOc bit d k vao ngay
25/5/2007, ban dlu chi 6 mdt so tiianh phd d Hoa Ky, va td dd dan dan md rdng bao gom nhieu thanh phd va eae khu vuc ndng tiidn ti'en toan tiie gidi.131
cac anh toan canh cda Google Street View dupe thu th$p mpt each ti/ddng ttidng qua hS thdng chgp chuyen biet, tilp den dUpc xif ly lam md nhiitig viing neng bJctia cac ddi tUpng ti'ong anh, va sau dd dupe cung d p ti'Uc tuyln trdn Internet. Cac khu vUc khdng tiie ti'uy cap b^ng xe hoi, chIng han nhu cac khu vuc ngudi di bp, dudng phd eh§t hep, hem v&
khu ti-UOt tijyet, Google si!f dung tiiilt bj Trikes (xe ba banh) hole mdt xe truot tuyet [31. Thiet bi ehgp anh cua Google ttiUdng s\i dgng ed chin may anh hUdng cho 360 dd chilu ngang va 180 dd cho chilu ddng, dat cao kho3ng 2,5 met, kem ttieo mpt GPS phuc vg dmh vl va ba may quel laser xae dinh chudng ngai vat trong vdng 50m de tgo anh toan canh thoang hdn. Ngoai ra edn cd cac thilt bj
4 4 • TAP CHI TIN HQC NGAN HANG • s 6 4C128) - 5/2012
Hint] 1: Anh quang canh dUdng pho tai w tri kmh do 51.464044, vTdd-0.215427
Hinh 2: Dich vu MapJack t?i Maritime Park
3G/GSM/Wi-Fi cho phep quet xac dinh cac diem quan tam [31.
Trong tiudng hpp tai diem ngUdi dung quan tarn cd san anh quang canh, anh nay se xuat hien sau khi ngUdi dung phdng to qua mdc cao nhat ti'ong cac dieh vu ban do va hinh anh ve tmh eua Google, hoac bang each keo ddi h/Ong pegman vao mdt vi tri tren ban dd.
Ngudi dung cd the s\i dgng ban phim hoac chudt de tiiUc hien eac chdc nang phdng to/thu nho/dich trai, phai, quay hinh, ... Tai cac niit giao d t cac tijyen dUdng va xe may anh, nhilu miii ten se dupe hien thi d l cho phep ngucn diing chpn hudng di tiep.
Dich vu Google Sti'eetview sd dung flash plug- in tiong tiinh duyet d l hien tfii anh quang canh dudng phd. Dieh vu nay dupe eung cap dudi hinh tilde eac anh panorama 360 dd chup ti'en dudng phd, kem ttieo nhting ttidng tin md ta phu ti-o nhUvi ti'i ^ a ly, hudng di ti-en cac phd tat diem hien thdi, diem lan can... Cac diem nay dUOe chgp rdi rac, va dUOc lien k i t lai, hien thi ti'en cdng cu sd dgng cdng nghe Flash nhung ti'ong ti'inh duyet d l hien tiij.
Vdi viec sd dung thilt bi chup anh ehuyen dung nhu da neu tren, quy ti'inh thu thap anh quang canh va thdng tin md ta kem theo cua dich vu Google Streeb/iew cd the duoc minh hoa nhu sau:
Tai mdi vj tri ma ttiiet bi chgp chuyen dung di qua, cac sensors se xac dinh eac chudng ngai vat va he tiidng se sijf dung eac dd lidu thu dupe td cac sensors dd d l quylt dinh cd chup anh quang canh tai dilm do hay di tilp.
Trong tiudng hpp khdng bi can cae gdc chgp, thilt bj chup se tiln hanh tu ddng thiet lap cac tiiam sd cho eae may anh gan kem theo cac
gdc ti/ang dng, sau dd chgp anh cho cac gdc dd. Song song vdi qua trinh dd, thdng tin dia ly tai dilm hien thdi se dupe thu nh^n qua GPS,
He thdng thu thap se tien hanh gep ndi d l tao anh quang canh tat vi tri hien thdi, phan tach thanh eac lat anh theo ky thuat phan lat da neu d [2]. 0 budc nay, td mdt anh quang canh chup, cd the smh ra duoc nhilu anh da phan lat tuong dng vdi nhi/ng mdc phdng khac nhau, va mdt anh cd kich thude nhd kieu thumbnail.
Thdng tin md ta dilm anh quang canh hien thdi cung se dupe phan ti'ch, lUu lai trong CSOL ciia he tiidng. Mdt sd thudc ti'nh quan ti'ong cDa anh quang canh.
cac thudc ti'nh d i / l i ^ ^ h :
- Dmh danh ID cua diem do, the hien bang thupc tinh pano_id= "lGgDcQTKz76t8ui- tiHRlg". Dinh danh nay dUpc sd dung lam dinh danh cua diem anh quang canh dd ludn.
- Kinh thudc anh (sd diem anh chilu rpng/ngang).
- Kinh tiiudc anh dupe chia nhd (chia theo lat vudng - tile).
• Vl tri dia ly tiieo kinhAT dd tai vj tri gde da chgp va vi tri da c$p nhat theo ban dd Google Maps.
- Mdc phdng anh tdi da
- Thdng tin md ta dia diem nhu viing, miln, dat nude,...
cac tiiude h'nh chilu:
- Kieu chieu, thdng thudng la chieu ttieo hinh cau (spherical projection)
- Gde lech cua anh quang canh (pano_yaw_de.
tilt_yaw_deg va tillLpftch_deg).
cac tiiudc b'nh md tS b6 sung:
- Gdc lech (yaw_deg) so vdi cac diem lan c^n (thdng qua dinh danh cua eac diem lan can).
Gdc nay dupe sd dung de tao nen ehi din v l dudng dl tren cdng cu hien thj - Mau sac hien ttii va ten dudng phd tuong Ung vdt cac diem lan can,
Theo quy trinh thu thap ciia Google StreetView, qua trinh chgp anh quang canh cd the dpc lap so vdt qua trinh xd ly anh quang canh, eae thdng tin md ta d l luu vao CSDL he thdng. Qua trinh dd se dUpc xd ly tai trung tam de cd the bo xung nhiing md ta v l cac dilm quan tam, v l dich vu kem liieo,
2.2 Djch vu MapJack
MapJack cung la mdt dieh vg eung cap miln phi anh quang d n h dudng phd tai mdt sd tiianh phd ti'en the gicfl", xuat hien td nam 2005 tai dia chi' http://www.mapjack.com Trong djch vu nay, cac anh quang canh cung duoc td chdc dudi dang nhilu anh con ghep liln nhau nhu Google Streetview. Mdi anh cung duoc gin kem vi tri dja ly va cac thdng bn md ta, va dUpc ^nh danh ttidng qua mdt chudi 12 ky tU khi chua kem ttidng tin phdng to (chlng han:
http:/A™AV.mapjack.coni^XPGnWAm4bFHE la URL de truy xult din anh quang canh tai vj tri ed thdng tin: Lat: 37.807224, Lon: - 122.422476, Hdg: 235 deg, Alt: 7 m) hoac 16 ky tu khi cd mdc phdng (URL httiJ://wwv/.mapjack com/?XPGnWAm4bFHE la anh tai vi *- i-ft-n nhung da dUOc phdng to
-Omh danh anh quang canh, gdm 10 ky tu(vdi diem 6 hinh trdn la XPGnWAm4bFI
• Gdc lech ciJa anh quang c^nh t^ii vi tii ngUdi quan sat, dupe ma hoa b^ng 2 ky tU (t^i gdc 235dd, mahoaia2kytUHE) - MUe dp phdng (nlu ed), dUde ma hoa bang 4 k y tu(taidiachi:
http:/Avww.map]ack.com/^XPGnWAm4bFHE 7CUA, mdc phdng dupe m3 hoa ttianh 7CUA) - Vi tri dta ly hidn tiidi: kmh dd, vidd, cao dd,...
Dd lieu dilm Snh quang c^nh: mdi dilm ^nh sd chi dUOc luu trU mdt miK phdng duy nhlt ti'ong he tiidng luu trO (khac biet vdi Google la mdi mUl: phdng ciia Google dlu dupe lUU ti'd ddc lap trong he thdng), ed kieh ttiUde ehu^n cd dmh la 4000 x 750 (pixels) dupe chia tiianh 8
Snh nhd kich ttiUdc 1000 x 350 pixels. NhU vSy, mdi dilm sS cd 8 3nh con va kdm theo 8 cinh thumbnail ci!ia chiing. Cac Snh con nay sd dupe truy xu^t td edng eg Rash trong trinh duyfit thdng qua xac djnh td ddng URL ciJa chung tUvi ti'i dja lyhidn thdi.
Thdng tin md tS eie dilm lan cjn, Cae thdng tin nay dupe td chdc ridng trong mdt tdp va dupe cdng cy flash tSi v l phia ngudi dung ngay liic bat diiu truy v^n din dilm Snh tuong dng.
2.3 Djch w FotoCalle
Djch vg FotoCalle la dupc cung d p ch thilt b| \hn dd li$u v l dnh quang ednh dudng phd 360 dd t9i Madrid, Tay Ban Nha Thilt bj thu ehgp anh quang cSnh dUdng phd va cac dd lidu md ta kdm theo dupe minh hog nhu hinh
^ ^ Tdi li$u ttiam khdc
sau day [3].
Thilt bi thu chgp ndy bao gdm bdn may anh SLR sd dgng dng kinh gde rpng de td dd co t h i tdng hdp dupe Snh toan canh cd dd phan giSi khoang 32MegaPixels, 360 dp chieu ngang va 180 dd chilu ddng. Ngoai ra, thilt bj djnh v| GPS cung dUi?c g^n kem de xac djnh VI tri dia ly hidn thdi luc chgp. He ttidng thdng tin kdm theo thilt b; nay ed kha nang kilm soat khoSng each gida nhOhg anh ehgp, thu nh^n dd lidu tU eac eSm biln va tiiilt bi d l tdng hi^p, luu trd trong co sd dd lieu cua FotoCalle.
cac anh toan cSnh cua di/ lidu FotoCalle cd c h ^ lupng tuong dot tdt va dupc hiln tfii vcfi vide si!r dgng cdng eg flash cua hang KRPano.
(Con n05)
1 G. Bradski. A. Kaetiler, Learning OpenCV' Computer vision with ttie OpenCV li- brary, O'Reilly Media. 2008.
2. J. Stiaw, Jolin Sttav/s Closeups in Nature (Practical Ptiotography Books}, Am- photo Books, 1st edition, 1937.
3. Canon Inc . EOS Rebel Tti, EOS 500D instrucbon manual 4. M. Stall, The Definitave Guide to ImageMagick, Apress, 2005.
5. J. K. VanDyh, Pro Drupal deuetopment, 2nd edifion, Aoress, 2008, 6. http://sourceforge net/prcflects/opencv
7. hUp'/Zhighscaiability carrvHickr-arctiitecture 8 http//maps.google.com 9. httpy/mapiack com 10 tittp//Wwwrotocallecom 11. tittpyAvww. imagemagick.org
12. tittp.//www.graptiicsmagick,org 13. t)ttp//en,wikipedia org/\Mki/Panorama 14. hHp//en wikipedia org/wiki/Pano'amic_ptKitography 15. tittpyAiww.o-seo.com
16.http:/M\rw.ptgrey,conv'productSi/1aclybug2/)adybug2_360_video_cameraas P
17. http-y/^ww.immersivemedia com/im&'pagelOS/lU.TechSpecDo- deca_120808 pdf
18. tinp://www, krpano.com 19. http//aws.amazon com/simpledb/
20 http/Anvw drupal org 21. http / A w w wordpress.com 22. http :/Avww, tsoft.it/oanorama/ptvi ewer htan
Cong nghe xui ly ngon ngii va phat trien thj Iriidng no! dung so Viet Nam
Vi§n Cdng ngh$ thdng tin • Ogi hpc Qudc gia Ha Ndi vOa t6 ehUe Hpi ttiao "Cdng nghd XLf ly ngdn ngd va phat tnen thj trUdng ndi dung sd Vi$t Nam ra t h i gidi".
oay la djnh hudng nghidn cUu trpng tam eiJa Vidn Cdng nghe thdng tin vd ^nh hudng nay phu h^p vdt sU biing nd cija thj ti'Udng ndi dung sd trong nudc va Qudc t l nhtJng nam g^n dSy.
Hdi thao da tgo diln dan trao ddi gida cae nha khoa hpe vdi cac doanh nghiep, gidi thidu cae cdng nghe, dac biet la cdng nghe xd ly tieng Viet vi ctflnh cdng nghe nay ed t h i trd ttianh t h i mgnh cgnh tranh cho cac doanh nghiep VN trong ITnh vi/c cdng nghidp ndi dung sd. Qua dd, cac nha trudng, vien nghidn cUu va nhifng doanh nghidp ciing tim kiem co hpi hdp tac.
Tham du hpi thao ed hon 200 dgi bieu, trong dd bao gdm cac nha quan ly, cac nha khoa hpc ve CNTT, cac nha ngdn ngd, cac doanh nghiep hang dau Viet Nam trong linh vUc xd ly ngdn ngif va cung cap ndi dung sd, cac hpc vien cao hoc, sinh vien va cdng ddng ngucri diing.
Thgc Hien
4 6 • TAP CHI TIN HQC NGAN HANG • s 6 4 ( 1 2 6 ) - 5 / 2 0 1 2