图像处理代码共享

Colbie

图像处理代码共享

9 \. E0 l5 G  T9 O, {; s. l---------------------------------我是分割线--------------------------------------
h=fspecial('average',[3 3])%3*3的均值滤波器
) N% Q. j; L$ Th=fspecial('disk',5)%半径为5的圆形平均模板
; H$ U: D9 k# Hh=fspecial('gaussian',[5 5],0.5)%5*5,标准差为0.5的高斯低通滤波器
h=fspecial('sobel')%加强水平边缘的竖直梯度算子
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; K# M; T. ]  L4 pI=imread('baby_noise.bmp');
) j( L; u% q/ f1 s, }' o9 Sfigure,imshow(I);
7 S7 g) s  @' P6 m# B# ?$ @9 X1 xh3_5=fspecial('gaussian',3,0.5);
I3_5=imfilter(I,h3_5);
7 j4 K' Z( g; a8 Afigure,imshow(I3_5);
) C0 b% s+ y: fh3_18=fspecial('gaussian',3,1.8);
3 x2 o3 W; _. U3 d; y  y% PI3_18=imfilter(I,h3_18);
6 R% E& n8 s+ f' J3 f' B$ ^; Ffigure,imshow(I3_18);
h5_8=fspecial('gaussian',5,0.8);
. V2 T5 {5 R- C% {3 U% R/ x2 @I5_8=imfilter(I,h5_8);
figure,imshow(I5_8);
" o" t2 `; E1 Y7 Q4 p( ^imwrite(I5_8,'baby5_8.bmp');
h7_12=fspecial('gaussian',7,1.2);
( X% b+ n0 ^( ?5 p2 n$ NI7_12=imfilter(I,h7_12);
3 G2 B: Q$ X0 I* ufigure,imshow(I7_12);
imwrite(I7_12,'baby7_12.bmp');
6 @% p/ q1 k1 d& w
$ V' B% f( L3 p$ j) @# Y---------------------------------我是分割线--------------------------------------
3 _5 ~- }' t6 u$ cf=imread('cameraman.tif');
imshow(f);
, @# _, r) V& b, rw=[0.1 0.1 0.1;0.1 0.1 0.1;0.1 0.1 0.1]
4 t- q1 E. T& ~, g9 R; ?w
1 B$ A0 j- v; p( b" |; R$ cg=imfilter(f,w,'corr','replicate');
+ z" y# q' @3 |* d/ G4 xfigure,imshow(g);

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% n" H& e& W; p6 S- v; U- Q# k( u3 PI=imread('baby_noise.bmp');
figure,imshow(I);
h=fspecial('average',3);
* r# ]0 n8 z" Z9 |I3=imfilter(I,h,'corr','replicate');
figure,imshow(I3);
h=fspecial('average',5);
I5=imfilter(I,h,'corr','replicate');
  j; J+ w. w! gfigure,imshow(I5);

: G7 E4 Z. d3 f4 ]---------------------------------我是分割线--------------------------------------
0 `3 U6 x3 q7 H) [1 O& ^%Robert 交叉梯度
I=imread('bacteria.bmp');
imshow(I);
w1=[-1 0;0 1];
$ n, R. n! A1 sw2=[0 -1;1 0];
( e4 `# f; V; q1 f( ?/ PG1=imfilter(I,w1,'corr','replicate');
4 r, F6 N; Z, QG2=imfilter(I,w2,'corr','replicate');
  w7 N% L, [8 o8 ]/ }G=abs(G1)+abs(G2);
' k* t# g0 W* S1 E& ?figure,imshow(G,[]);
figure,imshow(abs(G1),[]);
figure,imshow(abs(G2),[]);
  V9 {6 _6 S$ i) d3 `1 F1 L1 W# y8 e
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6 Y, P2 I6 }& z$ F: L%三种拉普拉斯模板
I=imread('bacteria.bmp');
imshow(I);
* _& x2 {5 o: E/ N- qI=double(I);
* u0 K$ A0 N- L) M: jw1=[0 -1 0;-1 4 -1;0 -1 0];
L1=imfilter(I,w1,'corr','replicate');
8 h+ O: O# B& c8 @, b' _7 ww2=[-1 -1 -1;-1 8 -1;-1 -1 -1];
* v6 \/ |1 y- Z% o, lL2=imfilter(I,w2,'corr','replicate');
, a, b) j. _, v0 S# Tfigure,imshow(abs(L1),[]);
figure,imshow(abs(L2),[]);
w3=[1 4 1;4 -20 4;1 4 1];
L3=imfilter(I,w3,'corr','replicate');
% b: C3 }8 _. B( F8 h' afigure,imshow(abs(L3),[]);

* j) V' |$ g5 F6 ?) U. t---------------------------------我是分割线--------------------------------------
8 Y6 Z0 |/ c$ I  v4 T- _
%sobel梯度
+ e7 v4 f% B5 ~; A' PI=imread('bacteria.bmp');
w1=fspecial('sobel');
w2=w1';
G1=imfilter(I,w1);
G2=imfilter(I,w2);
G=abs(G1)+abs(G2);
figure,imshow(G1,[]);
figure,imshow(G2,[]);
. O! D" Y5 z" D' y! k9 qfigure,imshow(G,[]);
( r. f/ [; y) L% N+ s: P# d5 g1 }6 `
---------------------------------我是分割线--------------------------------------
I=imread('baby.bmp');
3 l+ Z8 j3 C4 |8 d" F1 n, I* lfigure,imshow(I,[]);
" t, ?; s9 h9 v# RId=double(I);
h_lap=[-1 -1 -1;-1 8 -1;-1 -1 -1];
9 _$ q' I: `7 Z7 t# h" U# j" HI_lap=imfilter(Id,h_lap,'corr','replicate');
figure,imshow(uint8(abs(I_log)),[]);
2 w& E) B  Y# ^+ h, c- D/ ?3 Sh_log=fspecial('log',5,0.5);
I_log=imfilter(Id,h_log,'corr','replicate');
. `  V2 K$ Z7 ofigure,imshow(uint8(abs(I_log)),[]);
( G. }( y( c! I+ A! O' \h_log=fspecial('log',5,2);
I_log=imfilter(Id,h_log,'corr','replicate');
) ]  @* [: ]9 c$ v" c. P# }( Wfigure,imshow(uint8(abs(I_log)),[]);
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aplerll

看看都有哪些代码。