How to enlarge binary image background in output screen?

2 次查看（过去 30 天）
Zara Khan
Zara Khan 2018-12-4
回答： Image Analyst 2018-12-4
I am drawing 16 different radii circles over a binary image. I want visualize all circles that has been drawn over the image.
  4 个评论
显示 2更早的评论
Zara Khan
Zara Khan 2018-12-4
no that I have already but not able to visualize all circles See pic.png. larger circles are not visible

请先登录，再进行评论。

请先登录，再回答此问题。

回答（3 个）

KSSV
KSSV 2018-12-4
I = imread('P1_G4_9.png') ;
imshow(I)
[nx,ny] = size(I) ;
[X,Y] = meshgrid(1:ny,1:nx) ;
C = [mean(X(:)) mean(Y(:))] ;
R = 1:10:100 ;
th = linspace(0,2*pi) ;
x = cos(th) ; y = sin(th) ;
hold on
for i = 1:length(R)
plot(C(1)+R(i)*x,C(2)+R(i)*sin(th),'r')
end
  5 个评论
显示 3更早的评论
Zara Khan
Zara Khan 2018-12-4
Padding with back ground pixels possible so that can visualize all diameter circles ??????
KSSV
KSSV 2018-12-4
use imresize and increase the dimensions of your image.

请先登录，再进行评论。

Image Analyst
Image Analyst 2018-12-4
Assuming you have the circles and just need to visualize them, use viscircles().
Image Analyst
Image Analyst 2018-12-4
If you want all the circles you have to, for some reason, extend beyond the image, you're going to have to enlarge the image with padarray(), NOT imresize().

类别

在 Help Center 和 File Exchange 中查找有关 Convert Image Type 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by