Point Processing(2)
Histogram Equalization: :Histogram Equalizationhisteq() : pixel: img= imread(); img1=histeq(img);
imhist (2/1)imhist pixel : img = imread(); TABLE = imhist(img);
3Imhist(2/2)imhist show(Histogram) : img= imread(); h=histeq(img); imhist(h);
stemstem : h=imhist(img); stem(h, 'r','*'), stem(h,,), : k; r; b); : * ; + ; . .. ;
bar
,
x =[2 3 4 5 7; 4 2 3 2 1];bar(x);
Matlab Function
functionfunctionfunctionMatlab Functionfunction2
average.m
Matlab Functionaverage.m
p=3;
q=7;
r=average(p,q);
p=p+r;
q=q+r;
2015/4/710
Nearest Neighbor Interpolation(NNI) ()2015/4/7112.5aaaaabbbbb Nearest Neighbor Interpolation(NNI) ()2015/4/712
Bilinear Interpolation ()2015/4/713
Bilinear Interpolation ()
Bicubic Interpolation ()
2015/4/715
2015/4/716 Bicubic Interpolation()
Bilinear Interpolation2015/4/717
128*128
2015/4/718NNI BILINEARNNINNIBICUBIC:,,function
2015/4/719Matlab imresize
B=imresize(A, 4() ,nearest); [pixel] bilinear
