實驗要求：

Zooming and Shrinking Images by Pixel Replication
Objective
To manipulate a technique of zooming and shrinking images by pixel replication.
Main requirements: Ability of programming with C, C++, or Matlab.
Instruction manual:
(a) Write a computer program capable of zooming and shrinking an image by pixel replication. Assume that the desired zoom/shrink factors are integers. You may ignore aliasing effects. You will need to download Fig. 2.19(a).
(b) Download Fig. 2.19 (a) and use your program to shrink the image from 1024 x 1024 to 256 x 256 pixels.
(c) Use your program to zoom the image in (b) back to 1024 x 1024. Explain the reasons for their differences.

實驗目的就是通過編程對圖像大小進行放大或縮小。

上代碼：

%% clear all; clc; close all;%% % 1024*1024 to 256*256 shrink; img_name = 'general_img_1024.jpg'; img = imread(img_name);img1 = imresize(img, [256, 256]); figure(1) imshow(img); title('1024 * 1024'); figure(2) imshow(img1); title('256 * 256');imwrite(img1,'general_img_shrinked.jpg');% 256 * 256 to 1024 * 1024 zoom； img_name = 'general_img_shrinked.jpg' img2 = imread(img_name); img3 = imresize(img, [1024, 1024]);figure(3) imshow(img3); title('1024 * 1024');imwrite(img3,'general_img_zoomed.jpg');

程序中主要調用了MATLAB中的 imresize 這個函數對圖像大小進行縮放。

實驗結果：

總結

以上是生活随笔為你收集整理的数字图像处理实验（3）：PROJECT 02-03, Zooming and Shrinking Images by Pixel Replication的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。