Change pixels to mm in axes

5 次查看（过去 30 天）
Eliska Paulikova
Eliska Paulikova 2023-3-3
评论： Eliska Paulikova 2023-3-3
Hello, I have an image, I know that 1 pixel is 0.14mm. But if I plot some points from the image. The axes is in pixels. But I would like to have it in mm. How can I do it? Thank you so much

请先登录，再回答此问题。

回答（2 个）

Simon Chan
Simon Chan 2023-3-3
Read about function imref2d
DUY Nguyen
DUY Nguyen 2023-3-3
Hi Eliska, you can try this code:
% Load image
I = imread('your_image.bmp');
% Define conversion factor
conversion_factor = 0.14; % mm/pixel
% Get size of image
[M, N] = size(I);
% Create spatial referencing object
ref = imref2d([M N],conversion_factor,conversion_factor);
% Plot points on millimeter-scale axis
imshow(I, ref);
  3 个评论
显示 1更早的评论
Eliska Paulikova
Eliska Paulikova 2023-3-3
I was trying to use imred2D function, but as you can see I have a problem here. I don't know what to do with a table

请先登录，再进行评论。

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

R2022b

Community Treasure Hunt

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

Start Hunting!

Translated by