Saving a resized image while keeping the resized values

22 次查看（过去 30 天）
Alberto Acri
Alberto Acri 2023-1-2
编辑： Matt J 2023-1-2
Hi! I want to save a resized image in .png format. The .png image I start from has size 656x875 pixels.
I used this code to resize the image so that it is 500x500 pixels and the code works.
imageArray = imread('figure_001.png');
figure();
axis equal
imshow(imageArray);
image8bit = rgb2gray(imageArray);
imagelogical = logical(image8bit);
figure();
axis equal
imshow(imagelogical);
resize_image = imresize(imagelogical, [500 500]);
name_figure = figure;
axis equal
imshow(resize_image);
The problem occurs when I save the resized image. I am using this code:
output = sprintf('figure.png');
fulldestination = fullfile(pwd, output);
saveas(name_figure, fulldestination)
however when I view the properties of the figure I get a size of 766x855 pixels. How come?

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2023-1-2
编辑：Matt J 2023-1-2
Because with saveas, you are saving a screenshot of the figure window, not an image composed from the pixel values of resize_image itself. Use imwrite instead,
imwrite(resize_image,fulldestination)

更多回答（0 个）

类别

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

标签

产品


版本

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by