Hey,

i have a pretty basic question but i dont find a solution for it.

I dont really understand the way ImageJ converts a color jpg to 8 bit.

If i have the values

red = 248, green = 177, blue = 149

the sum is 574 and divded by 3 it is 191.3333

ImageJ makes it 192.

If i have the values

red = 247, green = 176, blue = 148

the sum is 574 and divded by 3 it is 190.3333

ImageJ makes it 190.

This look just random to me, does anyone know how exactly that gets calculated? Is it not just pixel by pixel? All alpha values are 255 by the way.

Best regards

Gwinzy