How do I make atrifacts for a synthetic image?
3 ビュー (過去 30 日間)
古いコメントを表示
Hello to everyone, could anybody help me making artifacts for a synthetic image?
1 件のコメント
回答 (2 件)
Image Analyst
2011 年 7 月 10 日
1 件のコメント
Jan
2011 年 7 月 11 日
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
2011 年 7 月 11 日
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 件のコメント
参考
カテゴリ
Help Center および File Exchange で Image Processing Toolbox についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!