Info
この質問は閉じられています。 編集または回答するには再度開いてください。
how can i zero pad of an image(vein) to make it look like a cylinder
2 ビュー (過去 30 日間)
古いコメントを表示
I have an image that i want to pad the volume until it looks like a cylinder! Then when i rotate it by 90 deg it wont look like a lot of long lines but only a lot of short lines.
2 件のコメント
回答 (1 件)
Nikhil Sonavane
2020 年 1 月 30 日
If you have the Image Processing ToolBox you can use the function PADARRAY. For example if I wanted to pad 2 zeroes around the matrix:
A = [1 2; 3 4];
B = [5 6; 7 8];
C = cat(3,A,B); % 3D matrix
D = padarray(C,[3 3 3],0,'both');
If you do not have the toolbox you could work around by by writing a few extra lines of code:
A = [1 2; 3 4];
B = [5 6; 7 8];
C = cat(3,A,B); % 3D matrix
vec= size(C); %Storing the dimensions of the a3d matrix
vec= vec+4; %Increasing the dimensions depending upon the number of zeroes to be padded.
paddedMatrix = zeros(vec); %Creating an empty matrix with new dimensions
paddedMatrix(3:end-2,3:end-2,3:end-2)=C; %Putting C into the empty matrix.
1 件のコメント
この質問は閉じられています。
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!