Can we find the transparency of an overlay on an image ?
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If I have an image with a transparent overlay on it, can we find the percentage of transparency from the alpha channel of the image?
6 comentarios
Walter Roberson
el 5 de Oct. de 2017
Editada: Walter Roberson
el 5 de Oct. de 2017
Could you post a sample image?
Will the line always be straight? Is the line in a known position or does it need to be detected?
Respuestas (1)
Walter Roberson
el 17 de Ag. de 2017
Yes.
if isinteger(YourAlphaData)
tAD = im2double(YourAlphaData);
else
tAD = YourAlphaData;
end
percent_transparent = 100 * (1 - tAD);
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