How to change one pixel only in plain image?

9 次查看（过去 30 天）
Arshub
Arshub 2022-1-20
回答： Kevin Holly 2022-1-20
How can I change one pixel in an image?
I need this to calculation NPCR and UACI between to cipher images whose plain images have only a one-pixel difference. hence, ineed original image and original image with edit value of on pixel only to encrypt them.

请先登录，再回答此问题。

回答（1 个）

Kevin Holly
Kevin Holly 2022-1-20
Ran in:
I = imread('peppers.png');
imshow(I)
size(I)
ans = 1×3
384 512 3
I(45,45,1) = 255; % red
I(45,45,2) = 255; % green
I(45,45,3) = 255; % blue
imshow(I)
grayscale_I = rgb2gray(I);
imshow(grayscale_I)
size(grayscale_I)
ans = 1×2
384 512
I(45,45) = 255;
imshow(I)

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

R2014a

Community Treasure Hunt

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

Start Hunting!

Translated by