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Accurate
Image Manipulation for Desktops
Color Temperature Filter, 8th
Aug 1999
Description
Color temperature
correction. Place a color sampler into the preview box by:
Right-click
using the mouse over an area that was gray in the original scene but has
a hue in the image.
Do not choose specular white
nor pure black areas, choose an area that should be gray, preferably light
gray.
To change the location of
the color sampler repeat right mouse click over an other area.
Note: FilterFormula
currently provides no way to show instructions to the user. For this
reason: If the color sampler is placed over an area that either
has fully saturated pixel values (red or green or blue channel is 255)
or pixel values that are zero (red or green or blue channel is 0) then
the preview window is turned into Red to inform you to select an other
area for the probe. (Using such a saturated area would introduce error
into the calculation, simply choose another location by right-clicking
the preview with the mouse).
Selection Dropdown, Probe Size.
Choose the color
sampler size, either 3x3, 5x5, 7x7 or 9x9.
Check Boxes
0/255 Inv
This is a preview
function. When enabled it will give visual feedback for pixels that have
channel value 0 or 255. This greatly helps in setting the black-point and
white-point accurately. Slowly enable/disable the 0/255 Inv check-box
to see the effect.
Sliders
BP (Black
Point)
BP allows to adjust
the black-point from level 0 to level 64.
WP (White Point)
WP allows to adjust
the white-point to level 255 down to level 64.
Author
Timo Autiokari.
Homepage:
Accurate
Image Manipulation for Desktops
Usage and Distribution Rights
Free to download
and use, distribution is prohibited.
Filter Engine
FilterFormula v
1.1, by
ATS/Graphics
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