8

Blur Rendering Effect 259
Non-Back ground—
Affectseverythingbutthe
background image or animation when chosen.
This is useful when the Blur effect has dimmed
your scene objects but not the background. B y
Using Brighten, Blend , and Feather Radius, you
canmaintaintheoriginalcolorsofthescene.
Brighten—Brightens the rendered image except for
the background image or animation.
Blend—Blends the Blur effect and the
Non-Background parameters with the orig ina l
rendered image.
Feathe r Rad ius—Feathers the Blur effect applied
to the Non-Background elements of your scene.
When us ing Non-Background as a Pixel Selection
you will notice that t he scene objects have a hard
edge to their blur since the objects are being
blurred but the background is not. Use the spinner
to feather the blur and eliminate the hard edge of
the effect.
Luminance—Affects any pixels that have luminance
values that fall between it’s Min and Max spinners.
Brighten—Brightens pixels that fal l between the
MinimumandMaximumluminancevalues.
Blend—Blends the Blur effect a nd the Luminance
parameters with the orig inal rendered image.
Min—Sets the minimum luminance value
necessary for each pixel in order for the Blur effect
to be applied to the pixel.
Max—Sets the m aximum luminance value a pixel
can have in order for the Blur effect to be applied
to the pixel.
Feathe r Rad ius—Feathers the Blur effect applied
to pixels that fall between the Minimum and
Maximum luminance values. When using
LuminanceasaPixelSelectiontheBlureffectcan
createahardedgeontheeffect.Usethespinner
to feather the blur and eliminate the hard edge of
the effect.
Map Mask —Applies the Blur effect according to the
channelselectedandmaskappliedthroughthe
Material/Map Browser. After selecting a mask you
must select a channel from the Channel list. Blur
then examines the mask and channel according
to the values set in the Minimum and Maximum
spinners. Any pixels in the mask that are of the
selected channel and b etween the Min and Max
values will have the Blur effect applied. This is
useful for blurring selected portions of a scene
such as a winter morning as seen through a f rost
covered window.
Chan n e l —Selects a channel that the Blur effect will
be applied to. After selecting a particular channel,
use the minimum and maximum spinners to
determinethevalueamaskpixelmusthavein
order to have the effect applied to it.
Brighten—Brightens the portions of the image that
the Blur effect is applied to.
Blend—Blends the Map Mask Blur effect with the
original rendered image.
Min—Theminimumvalue(RGB,Alpha,or
Luminance) a pixel must have in order to have the
Blur effect applied to it.
Max—Themaximumvalue(RGB,Alpha,or
Luminance) a pixel can have for the Blur effect to
be applied to it.
Feathe r Radiu s—Feathers the Blur effect applied
to pixels that fal l between the Minimum and
Maximum channel values. When using map mask
as a Pixel Selection, the Blur effect can create a
hard edge on the effect. Use the spinner to feather
theblurandeliminatethehardedgeoftheeffect.
Object ID—Applies the Blur effect to an object or
part of an object w ith a specific Object ID (in the
G-Buffer (page 3–1040) ), if the object matches the
Filter settings. To add or replace an Object ID, use
thespinnersorenteravalueintheIDtextboxand
press the appropriate button.