I'm looking to reproduce the glowing effect from this, if I understand well, then we first Image is "alpha texture" (black and white), and we blur (RGB * A) texture.
How is it possible to make alpha texture so that some color goes to white, and the other is black? I have found this: But I do not really know how to use these answers.
thanks
It appears that you can understand this error that the image is showing to you. This is actually all a texture, but (a) shows RGB color and shows the (b) alpha channel (c) That's what happens when you multiply RGB B
The alpha is not really "black and white", it is an abstract concept, and between it, a range of values 0.0 and 1.0 . In order to understand its meaning for the human brain, it interprets it as black ( 0.0 ) and white ( 1.0 ). In reality, alpha, whatever you want you want it and unrelated to color (although it can be used to do something in color).
The alpha channel will usually be prepared by a post-process image filter, which appears in areas of texture with much higher average luminance. In the modern graphics engine, HDR is used and any part of any part can be seen as a bright color candidate, which can be displayed on the monitor. The intensity of this glow is derived from the point that monitor can be displayed.
In this case, it is man-made. Think of an alpha channel like a mask, some artists looked at UFOs and decided that in areas where data-less (b) was not visible, they would look like zero zero Alpha Man was assigned (shiny bright with alpha = 1.0 )
Incidentally, you should not blur the alpha mask, you want to blur RGB * A result . If you blur the alpha mask, then this glow is not exactly the same. This idea is to blur the inflammable parts of UFO which are ready to shine and then the base adds up on the UFO color.
No comments:
Post a Comment