diff --git a/Matlab/dip/lab2/A.bmp b/Matlab/dip/lab2/A.bmp
new file mode 100644
index 0000000..d51a8a5
Binary files /dev/null and b/Matlab/dip/lab2/A.bmp differ
diff --git a/Matlab/dip/lab2/B.bmp b/Matlab/dip/lab2/B.bmp
new file mode 100644
index 0000000..ea574ef
Binary files /dev/null and b/Matlab/dip/lab2/B.bmp differ
diff --git a/Matlab/dip/lab2/lab2_1.m b/Matlab/dip/lab2/lab2_1.m
new file mode 100644
index 0000000..0c3ad1b
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_1.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_3_1a.m====');
+
+X=uint8([255 0   75
+         44  255 100])
+Y=uint8([50  50  50
+         50  50  50])
+Z=imadd(X,Y)
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=rgb2gray(I1);
+I4=rgb2gray(I2);
+I5=imadd(I3,I4);    % Óï¾ä1
+
+subplot(1,3,1),imshow(I3),xlabel('A');
+subplot(1,3,2),imshow(I4),xlabel('B');
+subplot(1,3,3),imshow(I5),xlabel('A+B');
diff --git a/Matlab/dip/lab2/lab2_2.m b/Matlab/dip/lab2/lab2_2.m
new file mode 100644
index 0000000..2a11706
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_2.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_3_4.m====');
+
+X=uint8([255 0   75
+         44  255 100])
+Y=uint8([50  50  50
+         50  50  50])
+Z=imsubtract(X,Y)
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=rgb2gray(I1);
+I4=rgb2gray(I2);
+I5=imsubtract(I3,I4);
+
+subplot(1,3,1),imshow(I3),xlabel('A');
+subplot(1,3,2),imshow(I4),xlabel('B');
+subplot(1,3,3),imshow(I5),xlabel('A-B');
diff --git a/Matlab/dip/lab2/lab2_3.m b/Matlab/dip/lab2/lab2_3.m
new file mode 100644
index 0000000..c9f0d7e
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_3.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_3_7.m====');
+
+X=uint8([50  50  50
+         50  50  50])
+Y=uint8([1  2  3
+         4  5  6])
+Z=immultiply(X,Y)
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=rgb2gray(I1);
+I4=rgb2gray(I2);
+I5=immultiply(I3,I4);
+
+subplot(1,3,1),imshow(I3),xlabel('A');
+subplot(1,3,2),imshow(I4),xlabel('B');
+subplot(1,3,3),imshow(I5),xlabel('A*B');
diff --git a/Matlab/dip/lab2/lab2_4.m b/Matlab/dip/lab2/lab2_4.m
new file mode 100644
index 0000000..37b2417
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_4.m
@@ -0,0 +1,26 @@
+close all
+clear
+clc
+disp('====E4_3_10.m====');
+
+X=uint8([0  0   50
+         50  50  50])
+Y=uint8([0  1   0
+         2  3   4])
+Z=imdivide(X,Y)
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+
+I3=rgb2gray(I1);
+I4=rgb2gray(I2);
+I5=imdivide(I3,I4);
+
+I6=im2bw(I1);
+I7=im2bw(I2);
+I8=imdivide(I6,I7);
+
+subplot(1,4,1),imshow(I3),xlabel('(a)ͼA');
+subplot(1,4,2),imshow(I4),xlabel('(b)ͼB');
+subplot(1,4,3),imshow(I5),xlabel('(c)»Ò¶ÈͼÏóA/B');
+subplot(1,4,4),imshow(I8),xlabel('(d)¶þֵͼÏñA/B');
diff --git a/Matlab/dip/lab2/lab2_5.m b/Matlab/dip/lab2/lab2_5.m
new file mode 100644
index 0000000..ee215ac
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_5.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_3_14.m====');
+
+X=uint8([0  0  1  1
+         0  0  2  3])
+Y=uint8([0  1  0  1
+         0  2  0  3])
+Z=X&Y
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=im2bw(I1);
+I4=im2bw(I2);
+I5=I3&I4;    % Óï¾ä1
+
+subplot(1,3,1),imshow(I3),xlabel('(a)A');
+subplot(1,3,2),imshow(I4),xlabel('(b)B');
+subplot(1,3,3),imshow(I5),xlabel('(c)A AND B');
diff --git a/Matlab/dip/lab2/lab2_6.m b/Matlab/dip/lab2/lab2_6.m
new file mode 100644
index 0000000..c8c10d9
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_6.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_3_15.m====');
+
+X=uint8([0  0  1  1
+         0  0  2  3])
+Y=uint8([0  1  0  1
+         0  2  0  3])
+Z=X|Y
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=im2bw(I1);
+I4=im2bw(I2);
+I5=I3|I4;
+
+subplot(1,3,1),imshow(I3),xlabel('£¨a£©A');
+subplot(1,3,2),imshow(I4),xlabel('£¨b£©B');
+subplot(1,3,3),imshow(I5),xlabel('£¨c£©A OR B');
diff --git a/Matlab/dip/lab2/lab2_7.m b/Matlab/dip/lab2/lab2_7.m
new file mode 100644
index 0000000..9fa8752
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_7.m
@@ -0,0 +1,19 @@
+close all
+clear
+clc
+disp('====E4_3_16.m====');
+
+X=uint8([0  1  2  3])
+Y=~X
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=im2bw(I1);
+I4=~I3;
+I5=im2bw(I2);
+I6=~I5;
+
+subplot(1,4,1),imshow(I3),xlabel('£¨a£©A');
+subplot(1,4,2),imshow(I4),xlabel('£¨b£©NOT A');
+subplot(1,4,3),imshow(I5),xlabel('£¨c£©B');
+subplot(1,4,4),imshow(I6),xlabel('£¨d£©NOT B');
diff --git a/Matlab/dip/lab2/lab2_8.m b/Matlab/dip/lab2/lab2_8.m
new file mode 100644
index 0000000..4fc4d5c
--- /dev/null
+++ b/Matlab/dip/lab2/lab2_8.m
@@ -0,0 +1,20 @@
+close all
+clear
+clc
+disp('====E4_2_17.m====');
+
+X=uint8([0  0  1  1
+         0  0  2  3])
+Y=uint8([0  1  0  1
+         0  2  0  3])
+Z=xor(X,Y)
+
+I1=imread('A.bmp');
+I2=imread('B.bmp');
+I3=im2bw(I1);
+I4=im2bw(I2);
+I5=xor(I3,I4);
+
+subplot(1,3,1),imshow(I3),xlabel('£¨a£©A');
+subplot(1,3,2),imshow(I4),xlabel('£¨b£©B');
+subplot(1,3,3),imshow(I5),xlabel('£¨c£©A XOR B');
diff --git a/Matlab/dip/lab2/rice.png b/Matlab/dip/lab2/rice.png
new file mode 100644
index 0000000..8e17898
Binary files /dev/null and b/Matlab/dip/lab2/rice.png differ