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X´AC DI.NH VI. TR´I C´AC GI´A D ˜O
.
H`ANG 275
H`ınh 14. Thuˆa.t to´an x´ac di.nh hu.´o.ng v`a vi. tr´ı gi´a d˜o. h`ang v´o.i xe tu.
. dˆo.ng
Nhˆa. n x´et
Bu.´o.c 6 (thu.
. c hiˆe.n nhu. bu.´o.c 3) v`a bu.´o.c 7 (du.`o.ng d´u.t n´et) khi thu.
. c hiˆe.n trˆen m´ay t´ınh
tuˆa`n tu.
. rˆa´t ph´u.c ta.p v`a dˆo. ch´ınh x´ac khˆong cao; nhu.ng khi ch´ung ta su.’ du.ng hˆe. CNN UM
th`ı viˆe.c x´ac di.nh thˆong sˆo´ Orientation rˆa´t ch´ınh x´ac v`a do.n gia’n. Do vˆa.y trong thuˆa.t to´an
ch´ung ta c´o thˆe’ bo’ qua khˆong su.’ du.ng hai bu.´o.c 6 v`a 7.
3. THU
.
. C NGHIˆE. M
Thu.
. c nghiˆe.m nhˆa.n ra dˆo. lˆe.ch cu’a pallet (g´oc ϕ) thu.
. c hiˆe.n v´o.i mˆo.t mˆo h`ınh pallet chˆau
ˆAu thu nho’ c´o k´ıch thu.´o.c theo ty’ lˆe. 1:2 (pallet thu.
. c c´o k´ıch thu.´o.c 1200×800×144, pallet
mˆo h`ınh c´o k´ıch thu.´o.c 600×400×72). Camera Bi-I d´u.ng yˆen v`a mˆo h`ınh pallet d´u.ng yˆen.
Khoa’ng c´ach gi˜u.a camera v`a mˆo h`ınh l´o.n nhˆa´t 2 m. Camera d˘a.t o.’ dˆo. cao cˆo´ di.nh 0,5 m (do
mˆo h`ınh thu nho’). Diˆe` u kiˆe.n du’ ´anh s´ang. Tˆo´c dˆo. b˘a´t a’nh 1000fps. ˆO´ng k´ınh camera Bi-i
V2 loa.i 1:1.4 50 mm v`a 1:1.4 25 mm. Thuˆa.t to´an du.o.
. c m˜a ho´a trˆen PC b˘a`ng Code Compose
3.1 cu’a h˜ang Texas Instrument.
Ch´u ´y: Sˆo´ liˆe.u o.’ c´ac ba’ng 1 v`a 2 o.’ khoa’ng c´ach 2 m l`a sˆo´ liˆe.u thu.’ nghiˆe.m dˆe’ kiˆe’m tra kha’
n˘ang phˆan biˆe.t khoa’ng c´ach v`a sˆo´ pixel; khˆong liˆen quan g`ı dˆe´n bu.´o.c 9 trong thuˆa.t to´an.
Kˆe´t qua’:
* Nhˆa.n da.ng g´oc lˆe.ch ϕ v´o.i dˆo. ch´ınh x´ac cao (sai lˆe.ch gi˜u.a g´oc lˆe.ch thu.
. c v`a chu.o.ng tr`ınh
nho’ ho.n 2o). Kˆe´t qua’ ˆo’n di.nh.
* X´ac di.nh vi. tr´ı gi˜u.a camera v`a mˆo h`ınh pallet: Sai sˆo´ 3 cm o.’ c´ac hu.´o.ng su.`o.n v`a ch´ınh
diˆe.n. Kˆe´t qua’ ˆo’n di.nh.

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520 1587-1-pb09

  • 1. X´AC DI.NH VI. TR´I C´AC GI´A D ˜O . H`ANG 275 H`ınh 14. Thuˆa.t to´an x´ac di.nh hu.´o.ng v`a vi. tr´ı gi´a d˜o. h`ang v´o.i xe tu. . dˆo.ng Nhˆa. n x´et Bu.´o.c 6 (thu. . c hiˆe.n nhu. bu.´o.c 3) v`a bu.´o.c 7 (du.`o.ng d´u.t n´et) khi thu. . c hiˆe.n trˆen m´ay t´ınh tuˆa`n tu. . rˆa´t ph´u.c ta.p v`a dˆo. ch´ınh x´ac khˆong cao; nhu.ng khi ch´ung ta su.’ du.ng hˆe. CNN UM th`ı viˆe.c x´ac di.nh thˆong sˆo´ Orientation rˆa´t ch´ınh x´ac v`a do.n gia’n. Do vˆa.y trong thuˆa.t to´an ch´ung ta c´o thˆe’ bo’ qua khˆong su.’ du.ng hai bu.´o.c 6 v`a 7. 3. THU . . C NGHIˆE. M Thu. . c nghiˆe.m nhˆa.n ra dˆo. lˆe.ch cu’a pallet (g´oc ϕ) thu. . c hiˆe.n v´o.i mˆo.t mˆo h`ınh pallet chˆau ˆAu thu nho’ c´o k´ıch thu.´o.c theo ty’ lˆe. 1:2 (pallet thu. . c c´o k´ıch thu.´o.c 1200×800×144, pallet mˆo h`ınh c´o k´ıch thu.´o.c 600×400×72). Camera Bi-I d´u.ng yˆen v`a mˆo h`ınh pallet d´u.ng yˆen. Khoa’ng c´ach gi˜u.a camera v`a mˆo h`ınh l´o.n nhˆa´t 2 m. Camera d˘a.t o.’ dˆo. cao cˆo´ di.nh 0,5 m (do mˆo h`ınh thu nho’). Diˆe` u kiˆe.n du’ ´anh s´ang. Tˆo´c dˆo. b˘a´t a’nh 1000fps. ˆO´ng k´ınh camera Bi-i V2 loa.i 1:1.4 50 mm v`a 1:1.4 25 mm. Thuˆa.t to´an du.o. . c m˜a ho´a trˆen PC b˘a`ng Code Compose 3.1 cu’a h˜ang Texas Instrument. Ch´u ´y: Sˆo´ liˆe.u o.’ c´ac ba’ng 1 v`a 2 o.’ khoa’ng c´ach 2 m l`a sˆo´ liˆe.u thu.’ nghiˆe.m dˆe’ kiˆe’m tra kha’ n˘ang phˆan biˆe.t khoa’ng c´ach v`a sˆo´ pixel; khˆong liˆen quan g`ı dˆe´n bu.´o.c 9 trong thuˆa.t to´an. Kˆe´t qua’: * Nhˆa.n da.ng g´oc lˆe.ch ϕ v´o.i dˆo. ch´ınh x´ac cao (sai lˆe.ch gi˜u.a g´oc lˆe.ch thu. . c v`a chu.o.ng tr`ınh nho’ ho.n 2o). Kˆe´t qua’ ˆo’n di.nh. * X´ac di.nh vi. tr´ı gi˜u.a camera v`a mˆo h`ınh pallet: Sai sˆo´ 3 cm o.’ c´ac hu.´o.ng su.`o.n v`a ch´ınh diˆe.n. Kˆe´t qua’ ˆo’n di.nh.