creating a frame(image), randn

1 次查看（过去 30 天）
PChoppala
PChoppala 2011-10-13
Hi
Does
a = sqrt(3)*randn(20,20)
imshow(a,([ ]))
create a frame(image), with 20x02 pixels, size of each pixel being 1x1, and the values of the pixels representing a Gaussian with covariance '3', and the intensity of each pixel to be gray linear scale.
Thanks
P

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2011-10-13
No. Try again. By the way, what do you mean by covariance? Do you mean variance or standard deviation instead?
  3 个评论
显示 1更早的评论
Image Analyst
Image Analyst 2011-10-13
Like I said in your duplicate post, perhaps the Example in the help will be a sifficient hint:
Example 1
Generate values from a normal distribution with mean 1 and standard deviation 2:
r = 1 + 2.*randn(100,1);

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Filtering and Enhancement 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by