清空筛选条件
清空筛选条件

how to set black (pixel=0 or <20) to NaN in an image

11 次查看（过去 30 天）
Tian Tian
Tian Tian 2017-8-31
评论： Tian Tian 2017-8-31
Hi there, can anyone tell me how to convert black regions on grayscale image to NaN value? I appreciate any answers.

请先登录，再回答此问题。

采纳的回答

KSSV
KSSV 2017-8-31
Let I be your matrix....read using imread
If you want to make pixels [0 20] to NaN..do this:
I(I>=0 & I<= 20) = NaN

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Arithmetic 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