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:
“Love brings to light the lofty and hidden characteristics of the lover—what is rare and exceptional in him: to that extent it can easily be deceptive with respect to what is normal in him.”
—Friedrich Nietzsche (1844–1900)
“Resignedly beneath the sky
The melancholy waters lie.
So blend the turrets and shadows there
That all seem pendulous in air,
While from a proud tower in the town
Death looks gigantically down.”
—Edgar Allan Poe (1809–1849)
“Young children learn in a different manner from that of older children and adults, yet we can teach them many things if we adapt our materials and mode of instruction to their level of ability. But we miseducate young children when we assume that their learning abilities are comparable to those of older children and that they can be taught with materials and with the same instructional procedures appropriate to school-age children.”
—David Elkind (20th century)