Unsharp Masking(USM) filtering to sharpen edge in Images using Image Processing Techniques

1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031323334 I=imread(‘lenna.JPG’);if length(size(I)) == 3 I=rgb2gray(I);end[row,col]=size(I);J=zeros(row+4,col+4);J(3:row+2,3:col+2) = I;% I*HK=edge(J,’canny’);% M = I – (I*H)M = [];for i=1:row+4 for j=1:col+4 M(i,j)= J(i,j) – K(i,j); endend% I’ = I + alpha*MN = [];for i=1:row+4 for j=1:col+4 N(i,j)= J(i,j) + (0.7)*M(i,j); endendJ=uint8(J);N=uint8(N);subplot(1,2,1);imshow(J);subplot(1,2,2);imshow(N); facebook,youtube,download,movies,google,streaming //pagead2.googlesyndication.com/pagead/show_ads.js Advertisements

CHAPTER-01 : 1.1 DIGITAL IMAGE PROCESSING

Image Editing / Digital Imaging “Manipulating of digital images using an existing software application such as ADOBE PHOTOSHOP , CORAL PAINT and etc.” Digital Image Processing “The conception,design,development and enhancement of digital imaging programs.” Computer Graphics “Graphics created using computer and the representation of image data by a computer from geometrical descriptions.” Pin-Hole Camera Model…