![0000 Screenshot.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/200567/0000%20Screenshot.png)
i need code urgently for my project, please help me
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
viswanath reddy
am 11 Jan. 2019
Kommentiert: viswanath reddy
am 26 Jan. 2019
i want code for comparison of pixels in an image by considering a 3*3 matrix. for each pixel, a 3*3 matrix around the pixel should be considered and the pixel must be compared with both the diagonals of the considered 3*3 matrix, whether the pixel is greater than all the diagonal elements or not?
0 Kommentare
Akzeptierte Antwort
Image Analyst
am 11 Jan. 2019
If you're not turning it in for homework, you can use my code below which uses highly optimized 2-D convolution:
grayImage = imread('cameraman.tif');
subplot(1, 2, 1);
imshow(grayImage, []);
% Do one corner
kernel = [-1,0,0;0,1,0; 0,0,0];
filter1 = conv2(grayImage, kernel, 'same');
% Do another corner
kernel = [0,0,-1;0,1,0; 0,0,0];
filter2 = conv2(grayImage, kernel, 'same');
% Do another corner
kernel = [0,0,0;0,1,0; -1,0,0];
filter3 = conv2(grayImage, kernel, 'same');
% Do another corner
kernel = [0,0,0;0,1,0; 0,0,-1];
filter4 = conv2(grayImage, kernel, 'same');
% Output must have middle pixel greater than all 4 corners.
outputImage = (filter1 > 0) & (filter2 > 0) & (filter3 > 0) & (filter4 > 0);
subplot(1, 2, 2);
imshow(outputImage, []);
![0000 Screenshot.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/200567/0000%20Screenshot.png)
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Image Processing Toolbox finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!