how to split a gray image into dark, middle and bright pixels

1 次查看（过去 30 天）

显示更早的评论

Elysi Cochin 2014-7-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/141736-how-to-split-a-gray-image-into-dark-middle-and-bright-pixels

编辑： Elysi Cochin 2014-7-15

采纳的回答： Image Analyst

how to split a gray image into dark, middle and bright pixels

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst 2014-7-14

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/141736-how-to-split-a-gray-image-into-dark-middle-and-bright-pixels#answer_144988

You would have to know the algorithm they're using because there are quite a few gray levels that seem to be in all three classes. I think there is quite a bit of overlap in what they call dark, middle, and bright.

2 个评论
显示无隐藏无

Elysi Cochin 2014-7-14

can you tell any simple method...

Image Analyst 2014-7-14

在 MATLAB Online 中打开

Simple method is thresholding

darkPixels = grayImage(grayImage < 100));
middlePixels = grayImage((grayImage >= 100) & (grayImage <= 200));
brightPixels = grayImage(grayImage > 200));

请先登录，再进行评论。