Is it possible to access the alpha value from an RGB image

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aswathy pavithran
aswathy pavithran 2020 年 6 月 13 日
回答済み: Walter Roberson 2020 年 6 月 13 日
i want to measure transparency of a hazy or foggy image.is there any other parameter that gives me the information of transparency.

回答 (2 件)

Ameer Hamza
Ameer Hamza 2020 年 6 月 13 日
If you have a png image, you can get transparency values using the 3rd output argument of imread()
[img, ~, alpha] = imread('https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png');

Walter Roberson
Walter Roberson 2020 年 6 月 13 日

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