how to create columns in a image
3 次查看(过去 30 天)
显示 更早的评论
i have more number of rows in an image so for equalizing with columns i need to add some columns can any one suggest .
3 个评论
采纳的回答
Image Analyst
2015-11-9
You can just assign some lower right row,column and it will extend the canvass to the right, and below with zeros:
grayImage = imread('cameraman.tif'); % Originally 256x256
size(grayImage) % Show size in command window.
% Expland image to be 400 by 600 by padding with zeros.
grayImage(400, 600) = 0;
imshow(grayImage);
size(grayImage) % Show size in command window.
Alternatively, if you want to expand the canvass on all sides, you can use padarray().
2 个评论
Image Analyst
2015-11-10
You must know, or be able to determine through some algorithm, the number of rows and columns. It can still be varying but in the end, they end up with some value, right? Like they might be 400x600 one time, and 480x640 the next time, but you still must know what they are. Even if you get random sizes by using randi(), you still know what they are.
更多回答(1 个)
Walter Roberson
2015-11-9
[r, c, ~] = size(YourImage);
if r > c
YourImage(r,r,:) = 0; %extend it with 0's
end
2 个评论
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!