User Manual

Table Of Contents
The 3D Histogram subview can also help visualize out-of-range colors in an image. For more
information, see Chapter 58 “Using Viewers” in the DaVinci Resolve manual or Chapter 7 in the
Fusion Studio manual.
Clipping Out-of-Range Values
When processing in floating point, there may be situations where the out-of-range values in an
image need to be clipped. The Brightness/Contrast tool provides checkboxes that can be used
to clip out-of-range values to 0 or 1.
For example, there may be files that contain out-of-range alpha values. Since the alpha channel
represents the opacity of a pixel, it makes little sense to be more than completely transparent or
more than fully opaque, and compositing such an image may lead to unexpected results.
Toeasily clip alpha values below 0 and above 1, add a Brightness/Contrast toolset to Clip Black
and Clip White, with only the Alpha checkbox selected.
Clip White and Clip Black settings in
Brightness/Contrast can be used to clip mattes.
Alternatively, you can clip the range by adding a Change Depth node and switching to 8-bit or
16-bit integer color depths.
1366Chapter – 67 Controlling Image Processing and Resolution