How to get OverExposure , under exposure, and normal Picture using Matlab code

7 次查看（过去 30 天）

Programming student 2013-10-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/90750-how-to-get-overexposure-under-exposure-and-normal-picture-using-matlab-code

评论： Image Analyst 2016-11-29

if i am given a picture and want to have its OverExposure , under exposure, and normal forms , is this possible using matlab code ? please refer me some links i am new to matlab

回答（1 个）

Image Analyst 2013-10-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/90750-how-to-get-overexposure-under-exposure-and-normal-picture-using-matlab-code#answer_100231

在 MATLAB Online 中打开

Just add or subtract some number from them.

overExposedImage = grayImage + 50;
underExposedImage = grayImage - 75;

The link does not have anything related to the above question.. Also, the above operation would result in a global shift of the intensity values. Is there a way to locally introduce exposure distortions?

Image Analyst 2016-11-29

I don't know why the link is there. It was probably in response to a question that they have since deleted.

Distortion is a spatial optical aberration, not an intensity problem.

To change the exposure locally on a pixel-by-pixel basis, you can multiply or divide, or add or subtract some amount from the original gray level, where the amount changes on a pixel-by-pixel local basis.

请先登录，再进行评论。

请先登录，再回答此问题。