How do I make atrifacts for a synthetic image?
3 views (last 30 days)
Show older comments
Hello to everyone, could anybody help me making artifacts for a synthetic image?
1 Comment
Answers (2)
Image Analyst
on 10 Jul 2011
1 Comment
Jan
on 11 Jul 2011
This is an adequate answer. Neither "artifact" nor "synthetic image" is well defined, such that an answer can be pure guessing only. Please, Mary, explain all needed details.
Sean de Wolski
on 11 Jul 2011
Ring artifacts and reconstruction artifacts for a parallel beam configuration:
I = imread('cameraman.tif');
theta = 0:.1:180; %make a bigger increment to add more reconstruction noise (e.g. 0:5:180);
S = radon(I,theta);
n = 5; %num rings
r = floor(rand(n,1)*size(S,1));
r2 = min(r+floor(rand(n,1)*8),size(S,1)); %max ring thickness is 8
for ii = 1:n
S(r(ii):r2(ii),:) = bsxfun(@minus,S(r(ii):r2(ii),:),.4*range(S(r(ii):r2(ii),:),2));
end
I2 = uint8(iradon(S,theta));
imshow(I2)
0 Comments
See Also
Categories
Find more on Image Processing Toolbox in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!