TYPE: COP
TITLE: Color Replace COP

This COP is used to replace a color region in an image with another
region.  The color region is defined by the hue, saturation, and
luminance ranges specified.  Each of these ranges can be extended
with a soft rolloff function.  The new region is simply specified
by a target color to which the center of the source region should
map.  The rest of the region is mapped to its corresponding position
around the target color.

Middle click on the dialog '?' help for more help on maskable pixel.

Parameters
    Source Hue/Saturation - The hue and saturation ranges of the source
			    region to be mapped.  The color wheel shows the key
			    selection.
    Source Luminance  - The luminance range of the source region to 
			be mapped.
    Target Color      - The color to which the center of the source
			region will map.
    Hue Rolloff       - Specifies the sharpness of the hue cutoff.
			This extends the hue range on either side
			by the rolloff size.
    Saturation Rolloff - Specifies the sharpness of the saturation cutoff.
    Luminance Rolloff - Specifies the sharpness of the luminance cutoff.
    Rolloff Function  - Specifies the rolloff function of the rolloff
			regions.
    Operation         - Specifies exactly how the color replace is
			performed.
    Supersample       - The number of subpixels sampled per pixel in one
			direction (2 samples 4 pixels, 3 samples 9). 
			More subsamples produce finer edges, at the
			cost of performance.

Mask & Plane Scope, Frame Scope page:
    Overview - See extra help (Middle click on the dialog '?' help).

Local Variables:
    L   - Sequence length
    S   - Start of sequence
    E   - End of sequence
    IL  - Input sequence length
    SR  - Sequence frame rate
    NP  - Number of planes in sequence
    W,H - Width and height of image
    I   - Image index (0 at start frame)
    IT  - Image time (0 at start frame)
    AI  - Current plane array index
    PI  - Current plane index
    PC  - Num of channels in current plane

See Also: Color Wheel (colorwheel), HSV
