Miranda Imagestore 2, User Manual

Page: 58 / 220

Front Panel Operation Imagestore User Manual
Page 58 Miranda Technologies Ltd
When sense has been selected, the arrow keys
W X
are used to choose
between normal and invert . Pressing the enter key applies the selection.
When source has been selected, the arrow keys
W X
are used to choose
between separate , self and none . Pressing the enter key applies the selection.
When type has been selected, the arrow keys
W X
are used to choose
between full and linear . Pressing the enter key applies the selection.
Sense
When the sense option is set to normal, a black-level key signal will cause
the "Fill" image to be fully transparent and not appear over a background. A
white-level key signal will cause the "Fill" image to be opaque with no
background appearing through. Intermediate keying levels will produce a
pro-rata transparency effect.
Setting the sense option to invert reverses this effect and white-level key
signals now create a fully transparent "Fill" image with black-level signals
producing an opaque "Fill" image.
Source
When the source option is set to separate, the key data is derived from the
luminance content of the separate "Key" image. When the source option is
set to self, the key data is derived from the luminance content of the "Fill"
signal itself. When the source option is set to none the key for an image is set
to white so that there is no image transparency.
Type
With Full Key the foreground image is passed only where the key signal is
present. Alternatively, with Linear Key the background and foreground are
summed and the foreground is unaffected by the key.