Create vectors that allow to subdivide the pixels of an image

4 次查看（过去 30 天）
Alejandro Fernández
评论： Alejandro Fernández 2021-7-10
Hello, I was wondering if someone could tell me how I can subdivide an image, for example img, so that I can store in a vector the positions of the rows and in another vector the columns (which logically would not be integers) to divide each pixel in 5 parts.
img = rand(10,20);
figure, imshow(img,'InitialMagnification','fit');
That is, what I would like is to be able to build a grid that follows the basis of what the poly2mask function does but with all the pixels:
Poly2Mask Grid
Thank yo so much

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2021-7-9
编辑：Matt J 2021-7-9
[m,n]=size(img);
y=linspace(0,m,5*m+1).'+0.1; y(end)=[];
x=linspace(0,n,5*n+1).'+0.1; x(end)=[];
  3 个评论
显示 1更早的评论
Matt J
Matt J 2021-7-10
编辑：Matt J 2021-7-10
Ran in:
I don't see anything wrong, other than that the XData,YData that you've chosen for the image are oddly shifted,
img = rand(10,20);
[m,n]=size(img);
y=linspace(0,m,5*m+1).'+0.1; y(end)=[];
x=linspace(0,n,5*n+1).'+0.1; x(end)=[];
[X,Y] = meshgrid(x,y);
figure, imshow(img,'InitialMagnification','fit');
hold on
plot(X,Y,'.')
himg=findobj(gca,'Type','image');
himg.XData=(1:n)-0.5;
himg.YData=(1:m)-0.5;
axis([0,n,0,m])

请先登录，再进行评论。

更多回答（0 个）

类别

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

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by