Amazon VERSION 2.0V1 Uživatelská příručka stáhnout pdf (Strana 252)

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ImageScreen

This node layers images together using the Screen compositing algorithm: F+B-FB. It's similar to ImageHypot, but

clamps pixel values to 1.0. This is mostly useful for combining mattes.

NOTE: ImageScreen math assumes image values are between 0 and 1. If your highlights go above 1.0,

ImageScreen may produce unexpected results.

Also see ImageHypot on page192.

Control (UI) Default Value Function

R enabled When enabled, affect the red channel of the image.

G enabled When enabled, affect the green channel of the image.

B enabled When enabled, affect the blue channel of the image.

A enabled When enabled, affect the alpha channel of the image.

mix 1 Dissolves between the /jointfilesconvert/368881/bg image at 0 and the full merge effect at

Mask

channel A The channel from the out_mask input to use as a mask:

• R - use the red channel as the mask.

• G - use the green channel as the mask.

• B - use the blue channel as the mask.

• A - use the alpha channel as the mask.

By default, the merge is limited to the non-black areas of the

mask.

invert disabled Inverts the use of the mask channel so that the merge is limited

to the non-white areas of the mask.

fringe disabled When enabled, the mask is modified so that by default the

merge is limited to the fringe (semi-transparent areas).

4 NODES I-K | IMAGESCREEN

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