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how to reduce the brightness of an image?

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Sivakumaran Chandrasekaran
Sivakumaran Chandrasekaran am 11 Sep. 2012
Beantwortet: DGM am 28 Apr. 2022
In MATLAB there are direct commands to enhance the brightness. I need to reduce it. How to achieve it.

Antworten (3)

Rene
Rene am 11 Sep. 2012
image = image./3;
imshow(image,[0 255])
yields a threefold reduction

Image Analyst
Image Analyst am 11 Sep. 2012
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
DGM am 28 Apr. 2022
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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