7/22/2019 Midterm II 2013-2014

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Khoa in in T Kim Tra Gia Hc KII 2013-2014BMn Vin Thng Mn Thi: XL nh v XL Ting Ni

GiThi: 9:05, Ngy 24-03-2014; Thi Gian: 45 pht

Cuhi1(6.0im):Chonhkchthc3x3f(x,y)cmtcnh(edge)nmgia.

S dnglachnlpixng(flippingpadding)quabinnh,nhvoclcvicas mtn.a. Tmnhcm rng.b. Lctrungbnhs hc1x3(1hng3ct).c. Lctrungbnhhnhhc1x3(1hng3ct).d. Viphnbc2dngtont Laplacian.e. Viphnbc1tnhgradientdngtont Sobel(ringr choGxvGy).

f. Tm lncagradientvgitr ngng cth xcnhccnh(edge)chnhxc.Cuhi2(3.0im):Chonhngvof(x,y)kchthcMxN,vikhonggitr ngvomcxm[0

10],histogramcanh rrpr

52

3)( , virlgitr mcxmcchunha[0,1].

a. Tmhmcnbnghistograms=T(r).b. Yucubininhngvothnhnhngrachistogram 23)( zzp

z ,vizlgitr mc

xmcchunha[0,1],tmhmchuynimcxmz=K(r).c. nhngvofcnhconkchthc4x4nh hnhv di,tmngranhconnykhis dng

chuyni cub.

Cuhi3 (1.0 im):MnhnhUDHDTV (2160x3840)ckch thc85 inches (kch thc ngchomnhnh),t l mnhnh16:9(t l chiudi:chiurng).Tnhs imnhtrn inchvung(dpi:dotperinchsquare)camnhnh.

0 0 2550 0 2200 2 255

? ? ?? ? ?? ? ?

x x x x x

x 0 0 255 xx 0 0 220 xx 0 2 255 xx x x x x

1 2 10 0 01 2 1

1 0 12 0 21 0 1

? ? ? ?? ? ? ?? ? ? ?? ? ? ?

8 0 5 105 5 5 84 8 8 104 1 4 1

nhngvo3x3 nhngvom rng nhngra3x3

Trngs chotont Gx Trngs chotont Gy

nhngvoMxN nhconngvo4x4 nhconngra4x4