Matlab中的灰度 [英] Grayscale in matlab

问题描述

我正在尝试将2D数组转换为灰度，但使用mat2gray却无济于事，并且imshow()似乎创建了一个二进制图像，当我绘制图形时我无法旋转它，例如原始数组为2d，但映射为3d.那么，在Matlab中对2d数组进行灰度处理的最佳方法是什么，那么如果您有A = rand(5,10)或其他东西并且想要对灰度进行灰度处理，什么是最佳方法?

I'm trying to convert a 2D array to grayscale but using mat2gray doesn't do anything and imshow() appears to create a binary image that when I graph I cannot rotate it, e.g. the original array is 2d but maps in 3d. So, what is the best way to take a grayscale of 2d array in Matlab so if you have A=rand(5,10) or something and want to take a grayscale of that, what is the best way?

推荐答案

如果在2D图像上使用imshow，则最好使用自动缩放.

If you use imshow on a 2D image, it is a good idea to use autoscaling.

img = randn(100);
imshow(img,[]);

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