KY YEU "CAC BE TAl NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAl NGUYEN VA MOl TRUONG GIAI SPAN 2002-2006"
DE TAI: N G H I E N C L f U C O N G N G H E B I E N T A P B A N D O S O V A LTNG D U N G C O N G N G H E M U L T I M E D I A T R O N G T H A N H L A P B A N D O
X U A T B A N T R E N D I A Ca quan chu tri de tai: Nha Xuat han Ban do
Chu nhiem de tai: ThS. Chau Thi Hd, KS. Duong Van Phi Cac thanh vien
KS. Nguyin Tai Dudng Nha XuS't ban Ban dd TS. Nguyin Diic Minh Nha XuS't ban Ban dd ThS. Li Phifdc Thanh Nha XuS't ban Ban dS KS. Nguyin ThiPhudng Nha XuSi ban Ban dd KS. Dd Thi Ha Nha Xuat ban Ban dd KS. Vu Bich Thuy Nha XuM ban Ban dd KS. Nguyin Hdng Viit Nha Xuat ban Ban dd KS. Luu Van Giang Nha Xui't ban Ban dd Muc tieu cua de tai:
1. Nghidn cuu ca sd xay dung ban do ung dung cong nghd multimedia va de xua't quy trinh thanh lap ban dd chuyen de ung dung cdng nghe Multimedia.
2. Dua ra giai phap chuydn ddi du lieu ban dd sd hoa dinh dang D G N thanh mdt dinh dang mdi phat hanh trdn dia CD ma v i n dam bao cho ngudi cung cap khdng bi ma't ban quyen vd dfi lieu; xay dung quy trinh bien tap ndi dung ban do sd phat hanh tren dia CD td du lieu ngudn la ban do sd dinh dang D G N
Noi dung nghien curu chinh:
1. Nghidn cuu cd sd xay dung ban do ung dung cdng nghd Multimedia.
2. Lua chon phuong thdc thuc hien dng dung cdng nghd Multimedia trong san xuat ban dd chuydn dd.
3. Xay dung san pham thd nghiem - Ban dd gidi thieu vd Ha N d i .
4. Nghidn cuu xay dung qui trinh thanh lap ban dd chuydn dd dng dung cdng nghe Multimedia.
5. Nghien cuu ndi dung ban dd sd phat hanh tren dia CD. Lua chon cac giai phap chuydn ddi du lieu dinh dang D G N .
6. Xay dung, vid't phan mdm Mapconvertor dd chuydn ddi d u lieu ban dd sd cd dinh dang D G N thanh dinh dang mdi CPH dd hien thi trdn phan mem B A N D O . (Thay bang Quy trinh chuydn ddi du lieu dinh dang D G N thanh dinh dang T I F duac hidn thi tren phan mem B A N D O ) .
7. Nghidn cuu xay dung, viet phan mem hidn thi ban do Bando, Qui trinh bien tap ban dd ndn sd phat hanh tren dia CD td du lieu sd dinh dang D G N .
8. Thd nghidm.
^ KY YgU XAC fig TAI NGHIEN COD KHOA HOC - CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI DOAN 2002-2006' Tom tat ket qua nghien curu
P H A N 1: U N G D U N G C O N G N G H E M U L T I M E D I A T R O N G T H A N H L A P B A N D O C H U Y E N D E
C H U O N G I : C O S 6 X A Y D U N G B A N D O U N G D U N G C O N G N G H E M U L T I M E D I A
1.1. TONG QUAN V E B A N DO M U L T I M E D I A .
Ban do da phuong tien (Multimedia Cartography) la su ket hop giua mdt ben la nha ban d6 va mot ben la ngudi su dung cac san pliant ban do thong qua mot phan mem hidn thi da chuc nang. Nghla la ban dd cho phep ngudi sd dung thdng t i n ddi tuong dia ly tren mat dat dudi nhieu hinh thdc khac nhau. D d lam dupe dieu dd, ngudi thidt ke (nha ban do) phai cung cap phuong tidn (cdng cu) thuan l p i nha't cho ngudi sd dung ban dd.
1.2. NOI DUNG CUA SAN P H A M M U L T I M E D I A
1.2.1. K h a o sat cac dang san p h a m d n g d u n g cdng nghe M u l t i m e d i a san xuat d t r o n g va ngoai nude
1. San pham d trong nude: Ba san pham ung dung cdng nghe Multimedia san xua't b trong nude dupe dua vao khao sat bao gdm: D i a C D - R O M du lich Viet N a m - "Viet Nam Travel" do Trung tam Thdng t i n - Tdng cue D u lich phat hanh 1998.
2. San pliant phat hanh nude ngoai: Hai san pham dua vao khao sat la C D - R O M (de md), gidi thieu vd thanh phd Kualalumpur - Malaysia, tai lidu tham khao trong hdi nghi Thong tin dia ly nam 2001 tai Malaysia do phong Ban dd thudc cue D o dac va Ban dd Malaysia san xua't nam 2000 va dd m d gidi thieu thanh phd Moscow (Mascova) ddu la san pham ban dd Multimedia thuc su vdi day du npi dung thd hien dupe cac chdc nang hidn thi va sd dung ban do.
3. Cac san pham ban dd Multimedia dupe gidi thieu tren mang Internet cd nhidu nhung dang chu y hon ca la san pham Atlas of Switzerland - alat Multimedia hidn thi ndi dung td he thdng tin dia l y .
1.2.2. T h a n h phan cua cac dang ban do M u l t i m e d i a
J. Am thanh: Cac san pham dupe cung ca'p am thanh nham dd thd hidn phong phu them thdng tin cua ddi tupng nhu qudc ca cac nude, cac ban nhac cd l o i , nhac khdng ldi, loi binh...
2. Text (chu viet): Cac bai vid't tap hop cac kf t u duoc l u u g i u trong may tinh dang tep tin ASCII nham cung cap thdng tin cua ddi tupng ma k f hieu trdn ban do chua thd hidn dupe he't.
3. Hinh anh dong (video): Dang thdng tin la cac doan bang (video lip) dupe sir dung dd cung cap them thdng tin cua ddi tupng mdt each sinh ddng va hap dan tao cho ngudi xem cd each nhin thuc thd hap dan hon so vdi each nhin ban dd thd hien canh quan bd mat.
Y YEU "CAC BE TAl NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAl NGUYEN VA MOl TRLfONG GIAI BOAN 2002-2006°
4. Yeu to ddng (animations): Thd hien dong thai cua yeu t d ndi dung ban do. Ban do thudng the hien cac qua trinh tong hop vd cac yeu td dia l y .
5. Anh: anh chup vd ddi tupng cung la mpt trong cac thong t i n tren ban do. N o lam tang tinh hap dan va lam phong phu npi dung cua ban do. anh cd thd la anh phang hoac anh lap thd.
6. Ban do dung dSkd't noi npi dung (hypermap): D d i vdi ngudi su dung ban dd thi ban dd ket ndi la mdt phuong tien truy cap tu nhien hoac trao ddi qua lai ddi vdi du lieu.
1.2.3. Nhan xet chung ve n d i d u n g cua ban do M u l t i m e d i a
Cd thd nhan thay rang cac san pliant ban dd Multimedia phan anh dung ten gpi cua no bao gdm cac he thdng ban dd va cac ndi dung thdng t i n khac lidn quan den chu dd cua san pham bao gdm anh, video, text va am thanh.
1.2.4. Su ket ndi cac npi d u n g t r o n g ban dd M u l t i m e d i a
Trong thanh phan cua ban dd da phuong tidn nhu da ndi phan trudc bao gdm:
1. Ban dd - la tap hop cac ky hieu hinh tupng khdng gian bieu thi cac ddi tupng dia ly theo ngdn ngu ban dd. Cac ddi tupng nay lien ket rang bupc nhau tao nen khdng gian ma no md ta.
2. Cac ddi tupng phi khPng gian thd hidn tinh chat ddi tupng ma ban than ky hidu ban do khdng phan anh dupe. Cac thanh phan nay bao gdm cac bai viet, am thanh hay doan hinh anh ddng w . . . Cac thanh phan nay deu cd didm chung la cd m d i quan he true tidp tdi ky hieu ddi tupng ma no phan anh.
1.2.5. Co sd xay d u n g cac ket ndi t r o n g ban dd M u l t i m e d i a
Dd xay dung cac kd't ndi can phai truy cap dupe dd dinh nghla cac ddi tupng nguyen to theo muc tieu cua ban dd da phuong tidn va quan tri no, dieu khien luong du lieu theo muc dich ridng can xay dung. Thuc te k h i xay dung cac quan he nay thudng cd cac each sau:
1. Lidn he vdi nha cung ca'p phan mem dd nghi dupe hd trp dd cd ca'u true tep (file) gdc td dd cho phep truy nhap, hoac nha cung ca'p phan mem cho cdng cu hd trp cho phep truy cap tdp du lieu.
2. Trdn cac phan mem thanh lap ban dd trudc dd xua't dd lieu ra cac khudn dang du lieu cd ca'u true chuan da cdng bd chang han nhu cac dinh dang *dxf, *.tif, *bmp, * w m f v v
Nhu vay co sd xay dung cac kd't ndi trong ban do Multimedia la can phai xay dung cac chdc nang co ban sau:
- Tao dupe lap ddi tupng nguyen to thdng qua xay dung cac trudng thupc tinh.
Chang han nhu cac thudc tinh nay cho phep nhan dang, xac dinh v i tri, trang thai hidn thi yv..
- Thiet lap quan he giua toa dp ddi tupng va toa dp man hinh hidn thi.
- Thiet lap chdc nang kidm soat trang thai ddi tupng
KY YEU "CAC BE TAI NGHIEN CUD KHOA HOC • CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006"
- Thiet lap cac chdc nang tao nhom ddi tuong cd cung tinh cha't dd tao ldp.
- Thiet lap cac chdc nang hidn thi cac Ihdng t i n thudc tinh phi khdng gian thdng qua loi gpi cac ham co ban cua hd thdng nhu cac ham truy nhap hidn thi anh, tep tin text, movie v.v...
1.3. NHUNG V A N DE CHUNG TRONG X A Y DUNG B A N DO M U L T I M E D I A 1.3.1. Y e u cau t h i e t b i .
May hinh cau hinh manh it nhat la may tinh Pentum I I tdc do trdn 500 M H z ; Card dd hoa (Graphic Card); Card am thanh (Sound Card); Loa (Speaker); Modem; Nhung trang thiet bi khac
1.3.2. Y e u cau d d i v d i d d lieu
- D d i vdi du lieu ban dd: M d i tep t i n du lieu ban dd khdng nen the hien khu vuc lanh thd qua rdng.
- D d i vdi du lieu dang text: Thdng tin dang text thudng bao gom bai viet thuyd't minh va sd lieu thd'ng ke.
- D u lieu am thanh: Ngoai trd nhung tep tin am thanh cd khudn dang cho may Apple, ddi vdi cac may tinh sd dung he didu hanh Windows cac tep tin am thanh dang W A V va MP3 deu cd thd su dung dupe. Su dung khudn dang tep t i n am thanh nao phu thudc vao phan mem Multimedia dupe chon.
- Hinh anh ddng (Video): Loai trd du lidu video dang Quicktime - Apple Quicktime, ca hai loai video khudn danag M P E G va A V I deu su dung dupe trong m d i trudng Windows va sd dung loai tep video d khudn dang nao phu thudc vao lua chon phan mdm Multimedia (phan mdm Marcromedia Director su dung tep video dang *. A V I
- anh: D u lieu anh cd dupe td cac ngudn khac nhau, anh chup sd dung may anh ky thuat so, anh quet t d anh chup analogue, anh bay chup, anh ve tinh v.v
1.3.3. X a y d u n g cac ket ndi a) Chon phuong thdc thuc hien
T d nhung phan tich tren, cd thd cd mdt so giai phap cdng nghd dupe dat ra nhu sau:
Hudng thd nhat la thud mdt hang chuyen san xuat phan mdm thuc hien. Tren co sd su dung san pham ban do so ma co sd san xuat dang cd.
Hudng thd hai la khai thac dng dung cac tien ich da phuong tidn cd trong cac phin mem lam ban dd hien dang sd dung.
Hudng thd ba la khai thac dng dung mdt trong cac phan m e m thudc nhom ngdn ngfi Macro dd nghien cuu lam san pham thu nghiem.
b) Khao sat cac phan mdm theo phuong thdc chon
Ba phan mdm thudc nhom ngdn ngu Macro da dupe khao sat bao gdm: Authoware, Macromedia Flash va Macromedia Director.
c) Ket luan cudi cung ve phuong thdc thuc hidn
Y YEU "CAC Oi TAl NGHIEN CUU KHOA HOC - C6NG NGHg NGANH TAl NGUYEN VA MOl TRUONG GIAI DOAN 2002-2006"
Tir co sd phan tich tren, phan m d m Macromedia Director co the7 coi nhu" la cong cu co nhidu kha nang nha't d u n g cho viec tao cac san p h a m da p h u o n g tidn dang tuong tac.
CHUONG II: XAY DUNG SAN PHAM THU" NGHIEM II. 1. X A Y DUNG MO HINH CUA SAN PHAM
II.2. X A Y DUNG DUXIEU CUA SAN P H A M I I . 2 . 1 . D d lieu ban do
- Su dung dd lieu ban dd gdc (ban dd so- ban do gdc tac gia) duoc bien tap theo phuong phap su dung cac phan mdm chuydn dung nhu phan m e m Freehand; Microstation, hoac Maplnfo (neu chua cd thi phai thanh lap mdi)
- Phan ldp ndi dung cho ban dd dd hidn thi dang tat m d theo ldp ddi tuong - K i hieu va ndi dung cua ban dd xay dung theo ty Id 1:10 000
II.2.2. D d lieu bai viet thuye't m i n h
- Bai viet thuydt minh cho ddi tuong (thdng tin hidn thi ciing vdi anh cua ddi tuong - ldp didm du lich, chua va khach san)
- Bai viet dung trong cac tep tin am thanh (ghi am) cd bai viet vd Lang Bac, Van Midu, H d Guam.v.v
- Bai viet dung trong phan phan thdng tin them (kien true, im thuc, tdm tat lich sd hinh thanh va phat tridn cua Ha Ndi).
II.2.3. D d lieu a m t h a n h
D d lieu am thanh gdm cd cac l d i binh duoc ghi am dd bidn tap video clip hoac dua vao cac p h l n ndi dung minh hoa va du lieu am thanh la cac ban nhac cd ndi dung vd Ha Ndi duac suu tam chon loc dd dua vao san pham.
II.2.4. D u lieu anh
D d lidu anh duoc chuan b i y dd cua san pham, theo ldp ddi tugng can thd hidn thdng tin phi khdng gian cung vdi cac bai viet thuyet minh d khudn dang *.GIIF.
II.2.5. D u lieu video
Cd 4 video clip " khu di tich H d guom", "khu di tich Van M i e u - Qudc T d Giam",
"khu di tich Lang Chu Tich H d Chi M i n h " va cac hinh anh vd "Nha Xuat ban Ban do", do ky su ban do kd't hop vdi k y thuat vien cung quay bang, tao du lieu am thanh va dung phim trdn may tinh sd dung phan mdm Ulead Video Studio 7. Cac video clip gdc ( * . A V I ) sau dd dugc x d l y trong phan mem Director dugc tep tin dung lugng nho hon dd dua vao san p h i m .
KY YEU -CAC OE TAI NGHIEN CUU KHOA HOC - CONG NGH$ NGANH TAI NGUYEN VA MOl TRUONG GIAI DOAN 2002-2006'
M O H I N H S A N P H A M
Bat dau,L6 go NXB, hinh anh dac trung Ha Noi
Hien thi > cong ban do
Tim kiem Di
chuyen O.Khien ldp
Do dac Chu giai Tham quan
H.thjH text, anh video,an thanh
T.Tin
khac Thoat
O.K
xTim kiejrrr'
Hien thj Hien thi Hien thj Hien thj Hien thi Hien thj Hien thi Hien thi Dong
II.3. THIET K E GIAO DIEN
Ban do "Giai thieu vd Ha N o i " : Ha N o i la thu do cua nude Cong Hoa X a H o i Chu Nghla Viet Nam - M a n h dat co lich sir gan 1000 nam xay dung va phat trien. Giao didn cua san pham can phai phan anh dupe net dac trung cua lanh tho, sir dung giao didn thuc don cho cac muc doc ban do (tim kiem, khung nhin, dieu khidn lop..) va giao dien hinh d6 hoa cho phan hien thi thong tin ddi tuong bang hinh anh va bai viet (su dung kf hieu ddi tupng lam Icon, k h i kich chupt vao k i hieu, thong t i n anh va bai viet xua't hidn).
KY YEU "CAC Dg TAI NGHIEN CUl) KHOA HOC - CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006" ^
CHL/ONG III: QUY TRINH THANH LAP VA XUAT BAN BAN DO CHUYEN DE U N G D U N G C O N G N G H E M U L T I M E D I A III. 1. SO DO Q U Y T P J N H
Co so dd xay dung quy trinh thanh lap va xua't ban ban dd M u l t i m e d i a la:
- Ket qua nghien cuu cac tai lieu vi thanh lap va xuat ban ban do Multimedia co tren mang Internet.
- Ket qua nghien cuu va xay dung san pham thd nghidm "Ban dd gidi thieu vi Ha N o i "
- Bao cao kd't qua nghien cuu de tai "Nghien cuu xay dung quy trinh : Thanh lap ban do chuydn di va atlas bang cdng nghd so" cua Nha Xua't ban Ban do thuc hidn nam 2002.
Quy trinh thanh lap ban do chuyen de ting dung cong nghe Multimedia Gdm 4 budc:
Budc 1: Thiet kd' ndi dung Budc 2: Xay dung kich ban Budc 3: Xay dung san pham
Budc 4: Ddng gdi, giao ndp san ph£m III.2. GIAI THICH NOI DUNG QUY TRINH
Budc 1: Thiet kenpi dung
- Xac dinh tdn gpi cua san pham (tdn ban dd).
- Xac dinh ddi tuong sd dung.
- Nganh khoa hoc cd lien quan (Giao due, L i c h su, Y te w . ) . Day chinh la mdt yeu cau bat budc ddi vdi cdng tac thanh lap ban dd chuydn dd.
- M d i trudng xay dung san pham bao gdm cdng nghd phan mem va he didu hanh may tinh.
- Hinh thdc phat hanh: phat hanh tren dia C D hay qua mang Internet Budc 2: Xdy dung kich ban
- Xay dung cau true tdng thd cua san pham: quy dinh so phan, sd canh, va cau true cua tirng canh, tirng phan. M d i phan ban dd cd cac canh lidn quan dd hidn thi trdn man hinh sau mdi l&n sd dung chdc nang chinh cua ban dd ( t i m kidm, do d a c . ) .
- Xac dinh chdc nang, cac phan tuong tac, quy dinh vd chdc nang t i m kiem, vd hidn thi khung nhin, ve tat m d ddi tuong v.v
- Thid't ke giao didn chinh - phu ve dupe so dd giao didn
- Hoan chinh so do kich ban - ve dupe so do kich ban san ph&m
- Xac dinh khudn dang du lieu can cd theo phan mdm chon: Liet ke tat ca cac loai du lieu dn chuan bi. So lupng ban dd cua san pham, ty Id va mdc dp chi tiet npi dung;
liet ke du lieu anh tinh anh ddng, bang hinh, bai viet cho cac yeu to v.v.
Budc 3: Xdy dung san pham
+ Xay dung du lieu theo thiet ke bao gdm cd d u lieu ban do va cac du lieu khac theo liet ke va dua ve khudn dang du lidu c h u i n trong phan mdm Macromedia Director
- Xay dung va viet cac m d dun ham chuong trinh con cho san pham (hidn thi, t i m kidm..)
KY YEU "CAC Pg TAI NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI POAN 2002-2006"
- Tich hop cac chuc nang thanh phan (tim kiem, khung nhin, tat m d lop doi tuong v.v) - Ket noi toan he thong thanh san pham hoan chinh
- K i e m tra, chay thu.
K i e m tra, chay thu duoc chia thanh 3 budc.
+ K i e m tra so bo du lieu trudc k h i ket ndi. V i du k i d m tra, chay thd video, chat luong am thanh, chat luong anh, text.
+ Chay thu kidm tra chuong trinh trong phan mdm sau k h i ket ndi, tich hop cac thanh phan ndi dung.
+ Chay thu dd kidm tra sau k h i dich sang chuong trinh (*.EXE) dd chay ddc lap tren CD - thu trong cac m d i trudng Windows khac nhau dd k i d m chung san pham.
Budc 4: Dong goi, giao nop san pham
- Dich tep tin san pham sau khi chay thd va sda chua thanh tep t i n (*.EXE) va tao tep tin autorun va ghi dia CD. Can ghi ca cac tep du lieu font chu va bang ma danh tieng Viet dd ngudi dung cd thd cai vao may trudc k h i su dung san pham .
- I n va dan nhan dia cung nhung thdng tin can thiet theo dia
- Chuydn sang khudn dang Web (neu dua len mang Internet). Phan mem Macromedia Director cd chdc nang dich tep tin sang khudn dang trdn trang Web.
PHAN 2: NGHIEN CUU CONG NGHE BIEN TAP BAN DO SO XUAT BAN TREN DIA CD CHUONG IV: NHU CAU sCf DUNG BAN DO SO TRONG CAC NGANH
K I N H T E Q U O C D A N
- Ban do sd cho phep phong to, thu nho di chuydn hinh anh tren man hinh - Cd thd xem ddng thdi mdt vung trdn hai cua sd vdi hai ty td phong khac nhau - Tren ban dd so cd thd xem cac thanh phan khac cua ban do nhu: Ten, bang chu giai, so ghi chu toa dd dia ly, toa dd X , Y , thdng tin xuat x d ban do...tren mot cda sd rieng, cd thd an hidn tuy theo lua chon cua ngudi su dung.
- Ban do sd cd thd didn ta su ndi tiep cac vung khac nhau trong mdt khdng gian rdng ldn trong mdt tep tin lidn tuc trong k h i ban dd truydn thdng phai chia cac vung lidn tiep thanh cac manh rieng biet.
- Ban do sd cd thd truy cap tdi co sd du lieu, lien ket v d i cac m d i trudng da phuong tidn, tao ban do ddng va thuc hien cac chdc nang tuong tac.
- Ban dd sd cd kha nang chuydn tai mdt lupng thdng t i n rat ldn bao gdm khdng chi cac thdng tin do hoa khdng gian ma con ca cac thdng t i n thupc tinh lam cho vide md ta cac ddi tupng thdm chi tiet va chinh xac.
- V d i phuong tien k y thuat cua cdng nghd thdng t i n hidn nay ban do sd con la mdt phuong tidn truydn thdng nhanh chdng va hieu qua cao.
C H U O N G V : G l A l P H A P C H U Y E N D O I D I N H D A N G D G N V A H I E N T H | D Q L I E U B A N D O S O
Dd cd thd thanh lap ban dd ndn sd t d du lieu sd ban dau dinh dang D G N thi can thiet phai nghien cuu cac giai phap tdng thd t d cdng doan chuydn ddi dinh dang D G N nhu thd
nao den cdng doan hidn thi ban do sd d phan mdm nao va phuong thdc hidn thi ra sao.
KV YEU 'CAC P£ TAl NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAl NGUYEN VA MOl TRUONG GIAI POAN 2002-2006'
V. 1. YEU C A U CUA D I N H DANG B A N DO N E N SO V A PHAN M E M HIEN THI:
- Cac yeu to" npi dung ban do tren phan mem hien thi hoan toan gidng nhu tren ban do giay dupe i n ra t d fiel D G N ve mau sac, k y hidu.
- Qua trinh chuydn ddi dinh dang D G N va hidn thi ban do cung phai dam bao dupe muc dich la hinh anh hidn thi hoan toan gidng nhu quan sat tren ban dd giay.
- Cho phep hidn thi doc nhanh ban dd: Thu phong, d i chuydn man hinh tdc dp nhanh - Cho phep them dupe thdng tin nhu: ve them dudng, chudi dudng, didm, cac vung dang polygon, cac ghi chu dang text tren ndn ban dd
- Cho phep xem dupe nhidu manh ban do tiep bien vdi nhau - Cho phep do khoang each giua cac ddi tupng tren ban dd - Cho phep in dupe ban dd sd.
V.2. CAC GIAI PHAP CHUYEN DOI DINH DANG DGN VA HIEN THI DUTIEU BAN DO SO
Tren co sd xem xet kha nang cua cac nhom phan mdm san xuat ban dd, uu nhupc didm cua cac dinh dang vector va raster , ddng thdi can cd vao yeu cau ddi vdi dinh dang ban dd ndn sd va phan mdm hidn thi. Cac giai phap dupe dua ra nhu sau:
Giai phap 1:
Hidn thi
D g lidu ? 7 N h o m p M n mdm GIS:
Chuydn ddi dinh .TAB(Mapinfor);
.DGN(MicroStatton) • .SHP(Acrview)
Hinh II.2.3-1 So dd giai phap 1 Giai phap 2:
Hidn thi
D u l i e u 7 ^
Chuydn ddi dinh
.DGN(MicroStation) '. • .PDF (Adobe Acrbat)
Hinh II.2.3-1 So do giai phap 2
Giai phap 3:
Du lidu
.DGN(MicroStation) Chuydn ddi dinh
Hidn thi
- N h o m phan mdm do hoa:
Corel Draw, Freehand,...
~* - N h o m phan m d m x d l y anh:
Photoshop, A C D See, IrasC, H i r m II.2.3-1 So do giai phap 3
KY YEU -CAC BE TAI NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAl NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006' Giai phap 4:
DuU?u ^ s , Xay dung, viet ph^nmem
.DGNdvUcroStation) ^ to ^ ^ B A N D O theo yeu cau dat ra
. D G N raster
H i n h II.2.3-1 So do giai phap 4 CHUONG VI: GlAl PHAP CONG NGHE DUOC LUA CHON CHO
N G H I E N C U D THU" N G H I E M .
Phan ket l u | n trong muc V . 2 da khang dinh, giai phap cong nghe dupe lua chon cho nghien cuu thu nghiem la giai phap thu 4.
V I . 1. G l A l PHAP CONG NGHE CHUYEN D O I DINH DANG DLTLIEU:
V I . 1 . 1 . T a i sao chuyen file D G N sang file anh raster ( T I F , JPG,...)?
K h i nghien cuu, xay dung, phat tridn phdn mem hien thi B A N D O da xac dinh, dinh hudng phan mem hien thi B A N D O hidn thi dupe dinh dang raster. Do do cdng doan thu nhat la chuydn ddi dinh dang D G N sang dinh dang raster.
Nhung han che k h i sd dung dinh dang raster se dupe x d l y d cong doan giai phap hidn thi ban do. Mat khac k h i chuydn ddi sang raster thi hanh anh luu g i u dupe toan h>6 mau sac, cac loai k y hieu ban do gidng nhu tren ban dd giay ma khdng can phai bidn tap lai tren phan mdm hidn thi trong k h i chuydn sang vector t h i khdng dupe nhu vay. Ngoai ra muc tieu cua dd tai la chi cung cap mdt ban do ndn dd sd dung cd thd xem, doc va ve ky hidu, ghi chu tren ndn ban dd sd tuong t u nhu su dung ban do giay. D o vay dinh dang raster dap dng yeu cau dd tai dd ra.
VI.1.2. Chuyen file D G N sang file a n h raster ( T I F , JPG,...) a, So do giai phap
D u lieu D G N F i l e r a s t e! " + b ^ g chaD
Hinh I I . 1.2 So do giai phap chuydn ddi t d dinh dang D G N sang f i l e anh b, Quy trinh chuydn ddi dinh dang DGN sang dinh dang raster:
Qua trinh chuydn ding dang D G N sang dinh dang rasto qua 2 cdng doan:
- Chuydn t d D G N sang EPS sd dung phan mdm Cadscript
- Chuydn t d dinh dang EPS sang f i l e anh rasto sd dung phan mdm Photoshop.
Y YEU "CAC DE TAl NGHIEN CUU KHOA HOC - C6NG NGHE NGANH TAl NGUYEN VA MOI TRUONG GIAI DOAN 2002-2006"
VI.2. GIAI PHAP CONG NGHE HIEN THI B A N DO
Sau k h i da co cac file anh rasto cua cac manh ban do dia hinh cau hoi tiep theo dupe dat ra la hidn thi cac file anh nay d phan mem nao va hien thi nhu the nao dd co dupe hinh anh ban dd nhu tren ban dd giay? Cac cau hoi nay se lan lupt dupe giai quyet. N h o m nghien cuu da lua chon m d i trudng Visual Basic 6.0 va cdng nghd GIS cua hang ESRI (Map Object 2.2) dd xay dung, phat tridn ph£n mdm Input Tool dd nhap toa dp cac file anh va phan mdm B A N D O dd hidn thi cac file anh.
V I . 2 J . Nhap toa dp cho cac file anh
Sau qua trinh V I . 1 chung ta thu dupe cac file anh rasto (TIF) t d du lieu ngudn la ban do sd dinh dang D G N . Van dd dat ra la cac file anh raster tren phang va chua cd toa dp, v i v^y chung can dupe nhap toa dp chinh xac va dupe hidn thi cd toa dp thuc nhu la file gdc ban dau d dinh dang D G N .
Do vay d budc nay, can phai xay dung cdng cu nhap toa dp cho cac f i l e anh sao cho vi tri tuong quan va khoang each gitta cac yd'u to ban dd tren anh phai tuong ung v i t r i tuong quan va khoang each gitta cac yd'u to ban dd tren dtt lieu nguon D G N .
Co sd dd nhap toa dp anh la cdng thdc sau:
X' = A x + B y + C
Y' = Dx+Ey+F Cdng thdc (1) vdi:
x' = Toa dp thuc td theo true x tren ban dd y '= Toa dp thuc te theo true y tren ban dd x = Chi so pixel anh theo cot
y = Chi sd pixel anh theo hang
A = He sd ty Id theo true x, sd don v i dp dai thuc te/lpixel trdn true x D,B = Gdc quay tren true x va y
E = He so ty le theo true y, so don v i dp dai thuc te/lpixel tren true y (Gia tri nay ludn ludn am, bdi v i khdng gian anh theo chidu tren xudng - cung chieu vdi man hinh nghla la toa dp x=0, y=0 tai t r i t r i tren trai cua man hinh, trong k h i khdng gian ban dd thi theo chidu dudi len)
C = Khoang each dich trdn true x, theo toa dp ban dd F = Khoang each dich tren true y, theo toa dp ban do Chuong trinh InputTool:
Dd' thuan l p i cho vide nhap toa dp anh theo cO chd' trdn, n h o m nghidn cdu da phat tridn p h i n m d m Input Tool. Day la cdng cu cho phep t i n h toan toa dp cac anh cho p h u hop v d i t h d t u trong bang chap va t y Id cua ban do.
VI.2.2. Phan ldp anh de hien t h i
Cac file anh da dupe nhap toa dp tren la dang raster, do vay chung cd han che la tdc dp hidn t h j cham ddng thdi qua trinh phong to thu nho, d i chuydn man hinh t h i se xay ra hien tupng nhde anh, "rd anh".
Dd giai quyet cac van dd da neu, giai phap phan ldp anh da dupe thuc hien va da dua ra dupe ket qua la sap xep anh theo thd t u toa dp va kidm soat dupe qua trinh phong to,
KY YEU "CAC B£ TAl NGHIEN COU KHOA HOC - CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006'
thu nho, di chuydn man hinh dd dat duoc muc dich hidn thi cac doi tuong raster gan nhu vai cac doi tuong vector, vdi chat luong hinh anh chap nhan duoc.
V I . 2 . 3 . H i e n t h i ban do tir cac file anh r o i rac
Dua tren mOi trudng Visual Basic 6.0 va c6ng nghd GIS cua hang ESRI (Map Object 2.2) dd xay dung, viet phan mdm B A N D O dd hidn thi cac f i l e anh da dupe nhap toa dp (chi tiet vd phan mdm hidn thi B A N D O se trinh bay d muc sau III.3).
Sau k h i cac f i l e anh dupe x u ly toa dp, dudng dan cua chung dupe luu trong file Access. Dua vao f i l e Access nay chuong trinh B A N D O didu tiet qua trinh thu phong, khac phuc nhupc didm rd anh cua cac trinh hidn thi anh binh thuang, ddng thdi tang tdc dp hidn thi anh.
VI.3. X A Y DUNG, VIET PHAN M E M HIEN T H I B A N DO
Trong khudn khd bao cao nay khdng trinh bay chi tiet theo kidu bao cao phat tridn mdt phan mem ma chi dua ra cac so dd khdi va neu nhung chdc nang, cdng cu cua ph£n mdm hidn thi B A N D O .
Phan mdm hidn thi cd ten la B A N D O , chuong trinh nay dupe viet tren mdi trudng Visual Basic 6.0 va ndn tang cdng nghd GIS cua hang ESRI (Map Object 2. 2).
Yeu cau: Phan mdm hidn thi B A N D O phai doc dupe cac f i l e anh duoc x d ly, nhap toa dp da neu trong muc (VI.2.1), cd giao didn, chdc nang va cac cdng cu do nhom nghien cuu dd ra.
V I . 3 . 1 . So do k h d i he t h d n g m d ta chdc nang:
Chuydn ddi D G N sang
raster
File anh
Hidn thi ban do Chuydn ddi
D G N sang
raster Hidn thi ban do
X t i ly d d lieu H i e n t h i anh Tao g h i c h u I n an
Do k h o a n g each
H i e n t h i V e
T h a y d d i t y l e
Chuydn ddi vector
Y YEU "CAC DE TAI NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAI NGUYEN VA MOl TRUONG GIAI DOAN 2002-2006- VI.3.2. So do luong d f i lieu cho he thdng hien t h i ban d d :
Trong phan nay de cap dd'n mdt sd so do:
a) Bidu dd luong du lieu mdc khung canh b) Bieu dd luong du lieu mdc dinh
c) Bidu dd ludng du lieu mdc dudi dinh
VI.3.3. Phan m e m hidn t h i B A N D O : Cac chdc nang va cdng cu
- Giao dien cua phan mdm hidn thi B A N D O : Sau k h i cai dat chuong trinh xong.
Chuong trinh se chay va xuat hien giao didn nhu hinh VI.3.3. N g u d i sd dung cd thd sd dung ngay cac cdng cu thu phong ban dd, d i chuydn man hinh, ve them cac k y hidu dudng net, vung, ghi chu chu...
- Cac chdc nang cua B A N D O dupe danh theo thd t u tren thuc don chon (menu) chuong trinh va dupe liet kd trong phu luc: X e m phu luc 2 chuyen dd I I
- Chi tiet cac chdc nang va tac dung cua cac cdng cu nhu sau:
CHITONG VII: QUY TRINH CONG NGHE BIEN TAP BAN DO SO PHAT HANH
T R E N OTA C D T U D Q LIEU B A N D O S O D I N H D A N G D G N
Sau khi da nghien cuu thd nghiem cac giai phap chuydn ddi dinh dang du lieu, giai phap hidn thi ban dd va xay dung, viet phan mdm hidn thi B A N D O . N h o m nghidn cuu da xay dung thanh quy trinh bien tap ban do sd phat hanh tren dia C D td du lieu sd dinh dang DGN. Trong dd cd cac quy trinh chuydn ddi dinh dang D G N sang dinh dang T I F va hidn thi tren phan mdm B A N D O .
Quy trinh cdng nghd xem phu luc 3 chuyen de I I VII. 1. NOI DUNG CUA BAN DO NEN SO:
Trudc het dd bat dau vao cdng doan chuydn ddi dinh dang dd lieu can phai xac dinh cac ydu td ndi dung cua ban dd sd.
Theo muc tieu cua chuyen dd I I ia thanh lap ban do nen sd song song vdi ban dd gia'y da phat hanh. Nhung ban do gia'y dd dupe bien tap va che ban didn td t d du lieu ngudn cd dinh dang D G N . N h u vay ndi dung cua ban dd ndn so se tuong ung vdi ndi dung trdn ban dd gia'y va tuong dng vdi npi dung tren ban dd sd dinh dang D G N .
Tuy nhidn do tinh linh hoat cua du lieu ban do so nen cd thd thd hidn ndi dung tren ban dd ndn sd phat hanh tren dia CD theo ydu cau khac nhau dupe.
Nhu thd ndi dung cua ban dd ndn so chia thanh 2 mdc dp bidu t h i : T h d nhat la cd day du ndi dung nhu trdn ban dd i n ra tren gia'y; T h d hai la cd thd loai bd mdt sd yeu t d theo ydu cau cua khach hang.
Sau khi da xac dinh dupe ndi dung thd hidn cua ban dd sd va kidm tra lai cac ydu t d ndi dung cua file D G N tren phan mdm MicroStation, tie'n hanh sang cdng doan chuydn ddi dinh dang du lieu.
VII.2. QUY TRINH CHUYEN DOI TU'DINH DANG D G N (MICROSTATION) SANG D I N H DANG TIF V A HIEN THI TREN PHAN M E M BANDO
V I I . 2 . 1 . So do quy t r i n h cdng nghe:
Xem phu luc sd 1 Chuydn de II: So dd quy trinh cdng nghd chuydn ddi td dinh dang D G N (MicroStation) sang dinh dang T I F va hidn thi tren phan mdm B A N D O
KY YEU "CAC DE TAl NGHIEN CUU KHOA HOC - CONG NGHE NGANH TAl NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006°
V I I . 2 . 2 . Q u y t r i n h cong nghe:
B u d c l : Chuydn ddi dinh dang D G N thanh dinh dang T I F a, Lap so do phan cap anh
Tren co sd du lieu of dinh dang D G N tien hanh lap so dd chia nho dien tich ban dd va dat ten cho cac vung chia nho dd. Vide nay nham muc dich dd tao ra cac file anh TTF cd dd phan giai khac nhau va kich thudc khdng ldn dd tang tdc dd hidn thi anh trdn phan mdm hidn thi Bando.
b, Chuydn dinh dang D G N sang dinh dang EPS
Sau k h i cd dd lieu ban dd dia hinh da dupe bien tap xong v d i cac yeu t d ndi dung cho phep dupe phat hanh va lap so dd phan chia nho didn tich ban do nhu trdn. Tidn hanh chuydn ddi dinh dang D G N thanh dinh dang EPS bang phan mdm Cadsript. Thuc chat day la qua trinh in file D G N thanh f i l e poscript.
c, Chuydn ddi dinh dang EPS sang dinh dang T I F
Su dung phan mdm x d l y anh Photoshop dd chuydn ddi dinh dang EPS sang dinh dang TIF. Tien hanh rasto hoa lin lupt cac f i l e EPS tren thanh cac f i l e anh TTF tuong ung vdi cac dp phan giai 50dpi, 100dpi, 200dpi. Vide dat tdn cac f i l e anh T I F phai dam bao tuong ung vdi cac ten file EPS.
Budc 2: X d ly dd lieu anh T I F
a, Tinh toan, nhap anh T I F bang chuong trinh Input Tool
Cdng vide tinh toan dupe chuyen ddi ban tu ddng thdng qua dng dung Input Tool.
(Xem phan nhap toa dp cho cac file anh VI.2.1)
Can cd vao kich thudc pixel cua cac file anh T I F va khoang each trdn thuc dia thidt lap quan hd dd tinh toan hd sd ty Id A , E trong cdng chdc (1) va nhap toa dp cho cac file anh TIF. Tinh he sd ty Id A , E la cdng vide quan trong.
b, Lap file CSDL cho cac file anh T I F
K h i xay dung phan mdm B A N D O da cd san mpt f i l e quan l y co sd du lidu m l u 6 dang Access. M d f i l e Access va nhap dudng d i n va v i t r i ldp cua cac file anh da dupe xir ly nhap toa dp d cdng doan trudc.
Budc 3: Hidn thi cac f i l e anh T I F trong p h l n mdm hidn thi B A N D O .
Sau k h i da x u l y xong cac file anh dong thdi da nhap chinh xac dudng dan va vi tri ldp cac file anh dd vao file mau Access. Ta khdi ddng phan mem B A N D O dd hidn thi ndi dung ban do. Giao dien phan mdm hidn t h i B A N D O se xuat hidn nhu hinh VI.3.3.
VII.3. K I E M TRA - SUA CHUA:
Sau k h i khoi ddng p h l n mdm hidn thi B A N D O , giao didn phdn m d m B A N D O xuat hien va hidn thi ban do sd vda bidn tap chuydn ddi dinh dang. Tien hanh k i d m tra mdc dd chdng khdp anh, v i t r i cac ldp anh, mau sac cua cac file anh.... da dat yeu cau de ra chua va tien hanh sda chua.
VIIA DONG GOI SAN PHAM:
Sau k h i da kidm tra xong ndi dung ban dd sd da dat yeu ciu dd ra. Chuydn sang cdng doan ddng gdi san pham, thiet lap bp cai dat (Setup) cho p h l n mem B A N D O .
Y YEU "CAC BE TAl NGHIEN CPU KHOA HOC - CONG NGH$ NGANH TAI NGUYEN VA MOI TRUONG GIAI DOAN 2002-2006°
C H U O N G VIII: S A N P H A M THU" N G H I E M C U A C H U Y E N B E II San pham thu nghiem cua chuyen de I I gom:
Ban do hanh chinh thanh pho Hai Phong va ban do dia hinh sd ty le 1/50.000 VIII. 1. BAN DO HANH CHINH THANH PHO HAI PHONG TY LE 1/50.000:
Ban d6 hanh chinh Thanh phd H a i Phong ty le 1/50.000 da dupe bien tap, sd hoa, che ban dien td tren phan mem MicroStation nam 2003. Ban do nay da dupe in offset tren gia'y kich thudc 4 td AO va phat hanh nam 2003.
Npi dung cua ban dd nen so Thanh phd Hai Phong phat hanh tren dia CD thu nghiem la ndi dung ban dd trdn gia'y da phat hanh.
Thuc hien theo quy trinh cdng nghd trinh bay d chuong V I I de thanh lap, kd't qua la ban dd nen so hanh chinh Thanh Phd Hai Phong.
VIII.2 BAN DO DIA HINH SO TY LE 1/50.000:
Thu nghiem tren 4 manh ban do dia hinh ty le 1/50.000 khu vuc Bac Ninh: F-48-69- A, F-48-69-B, F-48-69-C, F-48-69-D.
Cac cdng doan tie'n hanh theo quy trinh cdng nghd trong chuong V I I , tuong tu nhu thanh lap ban do nen so hanh chinh Thanh phd Hai Phong.
Ndi dung cua ban dd nen so phat hanh tren dia C D thd nghiem la ndi dung ban dd dia hinh tren giay da phat hanh.
VIII.3. CAC TINH NANG SUDUNG BAN DO NEN .SO: HANH CHINH THANH PHO HAI PHONG TY LE 1/50.000 V A B A N DO DIA HINH TY LE 1/50.000 THlTNGHIEM:
- Cho phep xem, doc ban dd, thu nho, phong to, xem toan bp ban dd ( f i t view) di chuyen man hinh dd dang va thuan tien.
- Chuyen khu vuc nhanh bang cdng cu xem nhanh (quick view), cho phep hidn thi nhanh chdng cac khu vuc khac nhau tren ban do
- Cho phep do khoang each giua hai diem va tong khoang each cua cac doan thang - Cho phep sd dung ve them cac hinh do hoa trdn nen ban do so nhu: hinh vudng, hinh trdn, dudng thang, chudi dudng thang (linestring), k y hieu diem (point), chu ghi chu (text)..., cd thd thay ddi dupe mau sac cua vung, mau sac cua dudng vien, kich thudc, font chu... Cac cong cu nay se giup cho ngudi sd dung cd the thiet ke, lap ke hoach tdng thd tren nen ban dd tuong t u nhu k h i thiet ke trdn ban do giay.
- Cho phep luu giu dupe cac hinh ve, ghi chu ma ngudi sd dung ve them thanh file cd dinh dang SHP (shape) va m d lai dd dang.
- Cho phep xda bo cac hinh ve ma ngudi su dung ve them, tinh nang nay hon han ban do tren gia'y
- Cd thd danh da'u vung hidn thi theo nhan (book mark) dd nhanh chdng t i m lai v i t r i da danh dau
- Cd thd thay ddi ty le ban dd dd dang - Cho phep xem ban do tren he toa dp thuc - Cho phep m d rdng dupe vung hidn thi ban do
KY YEU "CAC fig TAI NGHIEN CUU KHOA HOC - CONG NGHg NGANH TAI NGUYEN VA MOl TRUONG GIAI BOAN 2002-2006"
- Cho phep thay doi du lieu dd hien cac ban do khac nhau
- Co the thay the viec su dung ban d6 gia'y bang each sir dung phuang tien may tinh, giup cho ngudi sir dung ban do de dang van chuydn, di chuyen k h i d i thuc dia...
- Cong cu do khoang each co do chinh xac tuang duang vai dp chinh xac k h i do ban do tren gia'y
- M o t sd han che':
+ M p t so cong cu m d i de cap ma chua phat trien de hoat dpng dupe nhu: Cac cong cu tren thuc dan Chinh sda, T r p giup
+ M p t sd chu hidn thi tren thanh trang thai chua dich thanh tieng Viet
+ K h i i n ra chi in dupe ndi dung trong pham v i man hinh hidn thi ma chua i n dupe ca vung rdng ldn hon
VIII.4. CAI D A T PHAN M E M HIEN T H I BANDO
Do du lidu ludn thay ddi phu hop vdi nhu cau, v i vay bp cai dat se cd hai phan rieng biet: cai dat chuong trinh va cai dat du lieu. Qua trinh cai dat kha don gian vdi giao didn cai dat than thien.
KET LUAN - KIEN NGHI KET LUAN
Phan 1
1. Gidi thieu dupe khai nipm chung va kha nang dng dung cua cdng nghd Mulimedia trong thanh lap ban dd chuydn de.
2. Dd xuat dupe quy trinh thanh lap ban dd chuyen dd dng dung cdng nghfi Mulimedia.
3. Xay dung dupe san pham thd nghiem cd day du cac ydu t d ndi dung cua mdt san phim. ban dd da phuang tidn va do chinh bidn tap vien ban dd t u thiet ke va true tidp hoac tham gia cung thuc hien (kd ca phan video clip). Thdng qua san pham thd nghiem nay, cho tha'y bd sung them kha nang hudng da dang hoa san pham cua nha Xuat ban Ban dd trong thdi gian tdi.
Phdnl
1. Da dua ra dupe cac giai phap chuydn ddi dinh dang ban dd sd dinh dang DGN va hidn thi du lidu ban do sd.
2. Da de xua't dupe quy trinh chuydn ddi t d dinh dang D G N (MicroStation) sang dinh dangTIF va hidn thi anh T I F trdn phan mem hidn thi B A N D O .
3. Da phat tridn phan mdm hidn thi B A N D O dd hidn thi ban do sd va cd cac tinh nang sd dung ban dd kha thuan tien. Dua ra thi trudng mpt dang ban do so phat hanh song song vdi cac ban dd gia'y.
4. Da de xuat dupe quy trinh bien tap ban dd ndn sd phat hanh trdn dia C D td dd lieu sd nguon dinh dang D G N
5. Da hoan thanh dupe cac san p h i m thu nghiem:
KIEN NGHI
Y YEU XAC DE TAI NGHIEN CUU KHOA HOC - C6NG NGHg NGANH TAI NGUYEN VA MOl TRUONG GIAI DOAN 2002-2006"
1 COng nghe th6ng tin ngay nay dang phat tridn rat manh me, thanh lap ban do sd xua't ban tren C D hoac tren mang Internet la x u the cua cac nha san xua't ban do. Tuy nhien cac san p h i m ban dd so trdn C D hoac tren mang Internet cua nude ta hien nay cd chat luong chua cao. La mdt co quan nha nude vdi vai trd la nha cung ca'p thdng tin dia ly, Bd Tai nguyen va M d i trudng nen quan tam hon nua dd'n vide trien khai cac cdng tac nghien cuu va san xuat lidn quan dd'n cac thd loai ban do sd nay. Nham sdm dua ra thi trudng cac san pham ban dd so cd chat luong cao, cd nhidu gia tri thdng tin va nhieu tinh nang, tien ich de phuc vu nhu cau cua ngudi su dung ban do so ngay cang cao.
2. Phan mdm hidn thi B A N D O nhom nghidn cuu chuyen dd I I da phat tridn xong, tuy nhien do han che ve thdi gian va kinh phi nen mdt so cdng cu va tidn ich van dd d mdc de xua't ma chua hoat ddng dupe, ddng thdi hinh thdc giao didn chua that hap d i n ngudi su dung ban do. Neu dupe tao dieu kien nghien cuu tiep thi se khac phuc dupe nhung khiem khuyet tren ddng thdi cd thd nghien cuu them dd dua cac thdng tin thupc tinh lien ket vdi phan do hoa de cd thd cd mdt san pham phan mem hidn thi B A N D O cd tinh linh hoat: vda cd thd cap nhat thdng tin, thiet ke tren ndn ban do vda cd kha nang tra cuu tim kiem thdng tin tren ndn ban do dd.
