how to reduce the brightness of an image?
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In MATLAB there are direct commands to enhance the brightness. I need to reduce it. How to achieve it.
Answers (3)
Rene
on 11 Sep 2012
image = image./3;
imshow(image,[0 255])
yields a threefold reduction
Image Analyst
on 11 Sep 2012
1 vote
There are several ways, such as you can divide the image by a factor, you can subtract a number from it, or you can convert from RGB color space to HSV colorspace, reduce the intensity of the v channel (for example by subtracting or dividing) and then convert back to RGB color space.
DGM
on 28 Apr 2022
0 votes
There are many different ways, using both simplistic direct methods and purpose-built tools. The answers in this related question cover several of the ways and should apply directly to this question as well.
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on 11 Sep 2012
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