清空筛选条件
清空筛选条件

im2bw finding an alternative

6 次查看（过去 30 天）
Lisa Kaatz
Lisa Kaatz 2017-9-26
回答： Image Analyst 2017-9-29
Hey everybody, I try to find an alternative to im2bw(x,y).
Here's the code excerpt:
A1 = imread('filename.png'); A2 = im2bw(A1,0.5); %Make BW matrix (0=black, 1=white)
thanks for helping
  1 个评论
Geoff Hayes
Geoff Hayes 2017-9-26
Lisa - are you looking for an alternative because you don't have access to this function? I don't think it would be that difficult to come up with your own implementation of this function.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Eeshan Mitra
Eeshan Mitra 2017-9-29
If you do not have access to the Image Processing Toolbox as Geoff commented, you can manually threshold, as described in the following post:
https://www.mathworks.com/matlabcentral/answers/307299-how-can-i-convert-grayscale-image-to-binary-image-without-using-toolbox
Image Analyst
Image Analyst 2017-9-29
To threshold at a level of one half, try this:
level = intmax(class(A1)) / 2;
BW = A1 > level; % Or can use < instead to get dark things.

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with Image Processing Toolbox 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