石家庄铁道学院四方学院 教案纸 规定直方图概率分布 灰度级 0 2 3 4 6 7 概率 000000000.15020030020015 直方图规定化步骤: (1)对原始直方图操作: t0=1n0=790p2(3o)=0.19 t1=3n1=1023p、(S1)=0.25 l2 n2=850 P(S2)=0.21 t3=6n13=985p,(s3)=0.24 14=7n14=448P(S4)=0.11 (2)对规定直方图像操作: =0.00=T2()v1=0.00=T(1) V2=0.00=7n(2)v3=0.15=T2(u2) v4=035=Tn(u4)v5=065=7(u5) 0.85=Tn(l6)V7=100=72(u2) (3)映射结果: t0=1→>V3=T(l2)→l2=31=3→V4=Tn(a4)→l4=4 t2=5→v5=Tn(ul3)→>l5=5 t3=6>V6=T2(ul6)→>l6=6 t5=7→>v=T(l1)→>l=7 逆变换得 T()==3T-()=l4=47-(2)=l5=5 T。(5)=l6=67-(2)=l2=7 (4)规定化后各灰度级像素数: no=0nn=0nn2=0nn3=790 1023 =850n5=985 48 第6页石 家 庄 铁 道 学 院 四 方 学 院 教 案 纸 第 6 页 规定直方图概率分布 直方图规定化步骤： （1）对原始直方图操作： （2）对规定直方图像操作： （3）映射结果： 逆变换得 （4）规定化后各灰度级像素数： 灰度级 0 1 2 3 4 5 6 7 概率 0.0 0.00 0.00 0.15 0.20 0.30 0.20 0.15 t 0 =1 nt0 = 790 pt (st0 ) = 0.19 t 1 = 3 nt1 =1023 pt (st1 ) = 0.25 t 2 = 5 nt2 = 850 pt (st2 ) = 0.21 t 3 = 6 nt3 = 985 pt (st3 ) = 0.24 t 4 = 7 nt4 = 448 pt (st4 ) = 0.11 0.00 ( ) 0.00 ( ) 0 0 1 T u1 v T u v = = u = = u 0.00 ( ) 0.15 ( ) 2 2 3 T u3 v T u v = = u = = u 0.35 ( ) 0.65 ( ) 4 4 5 T u5 v T u v = = u = = u 0.85 ( ) 1.00 ( ) 6 6 7 T u7 v T u v = = u = = u t 0 =1→v3 = Tu (u3 ) →u3 = 3 t 1 = 3→v4 = Tu (u4 ) →u4 = 4 t 2 = 5→v5 = Tu (u5 ) →u5 = 5 t 3 = 6 →v6 = Tu (u6 ) →u6 = 6 t 5 = 7 →v7 = Tu (u7 ) →u7 = 7 ( 0 ) 3 3 1 = = − Tu t u ( 1 ) 4 4 1 = = − Tu t u ( 2 ) 5 5 1 = = − Tu t u ( 3 ) 6 6 1 = = − Tu t u ( 4 ) 7 7 1 = = − Tu t u 0 nu0 = 0 nu1 = 0 nu2 = nu3 = 790 nu 4 =1023 nu5 = 850 nu6 = 985 nu7 = 448