Could you explain the following code to enhance an image? "1./(1+exp​(0.03*(-ba​se_layer*2​55+170)))"

1 次查看（过去 30 天）
Dhanubala A
Dhanubala A 2018-1-30
回答： Walter Roberson 2018-1-30
I found this
(1./(1+exp(0.03*(-base_layer*255+170))))
code in order to enhance an image. But, I could not understand how this works. I couldn't understand the term '170' and '0.03'used here.can you please explain this?

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2018-1-30
That appears to be a sigmoid; see https://www.mathworks.com/examples/matlab/community/20079-sigmoid-documentation for some information about sigmoids.

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