Normal Blend Mode
This is the standard blend mode which uses the top layer alone, without mixing its colors with the layer beneath it.
Where a is the value of a color channel in the underlying layer, and b is that of the corresponding channel of the upper layer. The result is most typically merged into the bottom layer using "simple" (b over a) alpha compositing, but other Porter-Duff operations are possible. The compositing step results in the top layer's shape, as defined by its alpha channel, appearing over the bottom layer.
Read more about this topic: Blend Modes
Famous quotes containing the words normal, blend and/or mode:
“Philosophically, incest asks a fundamental question of our shifting mores: not simply what is normal and what is deviant, but whether such a thing as deviance exists at all in human relationships if they seem satisfactory to those who share them.”
—Elizabeth Janeway (b. 1913)
“The man whose whole activity is diverted to inner meditation becomes insensible to all his surroundings. If he loves, it is not to give himself, to blend in fecund union with another being, but to meditate on his love. His passions are mere appearances, being sterile. They are dissipated in futile imaginings, producing nothing external to themselves.”
—Emile Durkheim (1858–1917)
“A man of genius has a right to any mode of expression.”
—Ezra Pound (1885–1972)