QuickTime 3 Reference

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HSL Balance Filter (`hsvb')

This filter effect allows you to independently adjust the hue, saturation and lightness (also known as value or brightness) channels of a single source. The effect adjusts every pixel in the source, multiplying the hue component of the pixel by the value of the Hue Multiplier parameter, the saturation component by the value of the Saturation Multiplier parameter, and so on.

Example:

The HSL Balance Filter effect takes one source and has three parameters.

Parameters

Name

Code

Type

Description

Hue multiplier

`hmul'

Fixed

The amount to adjust the hue channel value of each pixel by.

Saturation multiplier

`smul'

Fixed

The amount to adjust the saturation channel value of each pixel by.

Lightness multiplier

`vmul'

Fixed

The amount to adjust the lightness channel value of each pixel by.
© 1997 Apple Computer, Inc.

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