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.
回答（3 个）
Rene
2012-9-11
image = image./3;
imshow(image,[0 255])
yields a threefold reduction
Image Analyst
2012-9-11
1 个投票
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
2022-4-28
0 个投票
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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在 帮助中心 和 File Exchange 中查找有关 Image Filtering and Enhancement 的更多信息
2012-9-11
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