03-07-2024, 04:41 AM

Hi, I'm a newbie and using GIMP(2.10.36) on Mac for several months. I have a question about Layer Mode: Addition.

According to the official guide, the Addition equation is "The pixel values of the upper and lower layers are added to each other. The resulting image is usually lighter."

So I made my own example to make sure this equation.

1. Top Layer(RGB Red): 227.0

2. Bottom Layer(RGB Red): 53.0

3. Resulting Image(RGB Red): 232.0

As far as I know, the Addition equation would be "E = min((M + I), 255)". According to the equation, "E = min((227.0 + 53.0), 255)" should yield 255. However, I got 232.0 as a result. Why does it happen?

According to the official guide, the Addition equation is "The pixel values of the upper and lower layers are added to each other. The resulting image is usually lighter."

So I made my own example to make sure this equation.

1. Top Layer(RGB Red): 227.0

2. Bottom Layer(RGB Red): 53.0

3. Resulting Image(RGB Red): 232.0

As far as I know, the Addition equation would be "E = min((M + I), 255)". According to the equation, "E = min((227.0 + 53.0), 255)" should yield 255. However, I got 232.0 as a result. Why does it happen?