如何从MATLAB中的图像创建子图像 [英] How do I create a subimage from an image in MATLAB

问题描述

给出这样的图像i，取四点

Given image, i, by taking four points like this

x=[p1,p2,p3,p4]
y=[p5,p6,p7,p8]

并将这些点连接到一个矩形中，如何显示该矩形包围的图像子集?

and by joining these points into a rectangle, how do I show the subset of the image enclosed by this rectangle?

推荐答案

im = magic(100)
subIm = im(p1:p3,p5:p6,:)

imshow(subIm)

假设p1 == p2，p3 == p4，p5 == p7和p6 == p8

This assumes that p1 == p2, p3 == p4, p5 == p7 and p6 == p8

基本上，您正在获取矩阵的一个子集.根据您p1..p8的设置方式，您会在此主题上有所不同.

Basically, you are taking a subset of the matrix. Depending on how your p1..p8 are set up, you will have a variation on this theme.

这篇关于如何从MATLAB中的图像创建子图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！