EDA365电子论坛网
标题:
图像处理代码共享
[打印本页]
作者:
Colbie
时间:
2020-5-14 11:19
标题:
图像处理代码共享
图像处理代码共享
5 m! z1 ]* I2 g0 G8 Z
; ]2 o1 R8 H) j& f& _4 A- q' u" w$ [
---------------------------------我是分割线--------------------------------------
" ]+ |6 E3 D# \ Q0 v" `* L: z0 O
h=fspecial('average',[3 3])%3*3的均值滤波器
* i" u9 [, M; w0 b/ ]
h=fspecial('disk',5)%半径为5的圆形平均模板
: Z" d; l( `' x1 A1 P, n
h=fspecial('gaussian',[5 5],0.5)%5*5,标准差为0.5的高斯低通滤波器
+ u4 ^+ s% |- z( _
h=fspecial('sobel')%加强水平边缘的竖直梯度算子
. D% F; Z, I! q7 b
& H: X% r F4 @' W
---------------------------------我是分割线--------------------------------------
7 P1 n3 _6 B/ x& w0 r
I=imread('baby_noise.bmp');
& T9 I( a( Y2 W2 H$ ?* g0 l6 I
figure,imshow(I);
d1 E' Q8 l8 R' b% H9 g
h3_5=fspecial('gaussian',3,0.5);
( s8 v; }. |( r: h! t" J0 e L S
I3_5=imfilter(I,h3_5);
0 a+ d( z7 w& o6 \& K) f2 r" o
figure,imshow(I3_5);
9 X6 c0 d6 ~+ ]+ _; E8 c
h3_18=fspecial('gaussian',3,1.8);
1 A5 C- G, T0 T" |: ^
I3_18=imfilter(I,h3_18);
8 u( ]% D3 q( l9 l0 t. {+ Z
figure,imshow(I3_18);
2 \0 N" A i" m* Z: W) ]
h5_8=fspecial('gaussian',5,0.8);
& B! H) |! B+ @, x; h# \3 k1 f: {
I5_8=imfilter(I,h5_8);
; K8 y# y6 l6 @: i+ |
figure,imshow(I5_8);
) q3 w0 |5 @" V# g6 a& M; Y
imwrite(I5_8,'baby5_8.bmp');
, \8 U$ I% p& \6 F, ^
h7_12=fspecial('gaussian',7,1.2);
7 n9 X( x8 }9 Z% R* _. ?/ a
I7_12=imfilter(I,h7_12);
. q, d4 a/ C. @, ?! R( \! y
figure,imshow(I7_12);
! _' V4 t+ O e1 _* x3 V. `' Q
imwrite(I7_12,'baby7_12.bmp');
/ Q1 t% q+ u" p! X
, p- m! b4 l5 T# K4 U
---------------------------------我是分割线--------------------------------------
/ D7 u8 U- P; V4 z
f=imread('cameraman.tif');
" a$ k# f: }: ^4 ~6 G3 l. l; u
imshow(f);
% D% z3 k5 ]: o3 M$ u
w=[0.1 0.1 0.1;0.1 0.1 0.1;0.1 0.1 0.1]
+ F& M8 p3 j8 B3 X* m5 {
w
2 _. Y1 P& o j8 b
g=imfilter(f,w,'corr','replicate');
9 z$ ^3 K) H2 C7 ~6 p+ O: D
figure,imshow(g);
( y0 O6 E" l8 \+ i+ m4 w
4 a; U( f( j2 V/ P2 s
---------------------------------我是分割线--------------------------------------
5 b: `$ z/ s% E. e$ r
- [/ g' J3 b9 |
I=imread('baby_noise.bmp');
2 Z/ X) ]# f9 d4 m
figure,imshow(I);
! w, z% W- T* F# T* y1 W7 }
h=fspecial('average',3);
2 r# l* q9 C+ {8 @* ^( F
I3=imfilter(I,h,'corr','replicate');
3 |0 |6 X! t4 r7 ] @/ W/ M
figure,imshow(I3);
7 N, c* c I n# E( ?/ y
h=fspecial('average',5);
' C0 z' L$ m& F+ j9 J/ }
I5=imfilter(I,h,'corr','replicate');
0 R& v) J2 o6 Y% l& ^( { a$ w
figure,imshow(I5);
3 }# S$ w3 a% B4 c
7 p O% f: u- u8 E6 O2 l6 r
---------------------------------我是分割线--------------------------------------
! r1 j0 G0 W$ T
%Robert 交叉梯度
Y: N9 ^0 z7 {( b+ S2 D' U* m! {
I=imread('bacteria.bmp');
3 t+ ?+ `% }+ Z
imshow(I);
! ]+ s$ x$ C% h. M
w1=[-1 0;0 1];
7 x+ l8 U* ?) Q a K6 m
w2=[0 -1;1 0];
P7 M3 Q7 X/ s1 j
G1=imfilter(I,w1,'corr','replicate');
. [ s/ h4 t- l. D
G2=imfilter(I,w2,'corr','replicate');
( Y; O5 ?! E6 k% f' b/ g z) m
G=abs(G1)+abs(G2);
; f. c6 Q W7 j0 |/ h5 A" _
figure,imshow(G,[]);
% t- Z* @! ~# G, z9 [. y) T& A e) w/ w
figure,imshow(abs(G1),[]);
$ Z) w8 F: O3 F1 j7 l( X
figure,imshow(abs(G2),[]);
2 E6 x! h$ H6 I+ e9 z8 K
$ ~4 J0 T, o4 x5 k* s
---------------------------------我是分割线--------------------------------------
+ B0 t% X( p. U0 p/ _) d
%三种拉普拉斯模板
5 ^& W/ i+ T* i/ a
I=imread('bacteria.bmp');
1 Z; _* f7 h: g* ]( c
imshow(I);
, K: Q; F. A0 G8 i8 G1 Q
I=double(I);
& a5 J9 O- r0 W* q9 f
w1=[0 -1 0;-1 4 -1;0 -1 0];
; k! _' V2 h( ^2 ?7 d9 L
L1=imfilter(I,w1,'corr','replicate');
1 T$ ^/ P# o0 B8 r* @; }2 h* D
w2=[-1 -1 -1;-1 8 -1;-1 -1 -1];
( n; U( K ^& A, k. y6 u1 p
L2=imfilter(I,w2,'corr','replicate');
4 I$ p6 ^, W6 {3 n2 |) M% j
figure,imshow(abs(L1),[]);
6 t0 k7 X) h) j, [
figure,imshow(abs(L2),[]);
* ?& t5 d0 S; e$ j6 v8 G. K
w3=[1 4 1;4 -20 4;1 4 1];
) |+ u, v+ B, O. i/ i, }
L3=imfilter(I,w3,'corr','replicate');
4 c% U. H( n! O" h2 M, K9 ~' J( p/ Y
figure,imshow(abs(L3),[]);
# @+ E- g9 d4 |; P/ v2 c
8 C) O+ x% x! h2 I4 A+ L+ X
---------------------------------我是分割线--------------------------------------
: x- S K" C' L+ p
2 _' w: X6 o7 v
%sobel梯度
( w$ S2 }1 h2 [& g6 j: Q# ^6 B- L
I=imread('bacteria.bmp');
, M. i$ e+ o* M. j. {. U" a* f
w1=fspecial('sobel');
' s9 G3 J C2 t- v1 \) T. X. k
w2=w1';
- |+ V' i% E0 p0 a; S& E2 d! N
G1=imfilter(I,w1);
5 |7 u- S h' r5 u/ P
G2=imfilter(I,w2);
7 v E" z' S! g; g; N: g8 r. R
G=abs(G1)+abs(G2);
$ J' U: Q6 w/ ~' @ q8 A1 f
figure,imshow(G1,[]);
( c6 F: e8 [8 Q' Z3 C
figure,imshow(G2,[]);
1 G5 D9 `/ o) C5 R
figure,imshow(G,[]);
' B8 J$ A& @: q
0 C5 d( H% @ @7 C4 R5 k
---------------------------------我是分割线--------------------------------------
- j' H4 e& p( | {7 S5 d
I=imread('baby.bmp');
: u1 p- W% j/ s- k# m# m1 j5 w' X9 N
figure,imshow(I,[]);
8 {- ]' o2 p$ v6 g
Id=double(I);
6 X! h6 U* N: o5 _( w, H
h_lap=[-1 -1 -1;-1 8 -1;-1 -1 -1];
& I) k/ ?% J+ ^, O: n& ^
I_lap=imfilter(Id,h_lap,'corr','replicate');
5 Z7 G2 R( ^% T$ X7 r/ Y
figure,imshow(uint8(abs(I_log)),[]);
8 Y* F6 ~4 M3 T8 @. E2 C% R% h
h_log=fspecial('log',5,0.5);
' P& O) w* c1 R) p$ L
I_log=imfilter(Id,h_log,'corr','replicate');
' @$ G9 a0 u' [. U- k8 i) O+ c
figure,imshow(uint8(abs(I_log)),[]);
% m* ^3 W* I8 j2 H& x9 R
h_log=fspecial('log',5,2);
; n6 j8 A/ i# `
I_log=imfilter(Id,h_log,'corr','replicate');
: M' g7 W. ^& l# D
figure,imshow(uint8(abs(I_log)),[]);
8 h& h4 a. Z. S! ]
作者:
aplerll
时间:
2020-5-14 13:16
看看都有哪些代码。
欢迎光临 EDA365电子论坛网 (https://bbs.eda365.com/)
Powered by Discuz! X3.2