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Using Help
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Adobe Premiere Pro Help
Applying Effects
Using Help
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Contents
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Index
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265
3
To reverse the effect, so that all colors except the specified color are preserved, select
the Reverse option.
Color Replace
The Color Replace effect replaces all occurrences of a selected color with a new color,
preserving any gray levels. Using this effect, you could change the color of an object in an
image by selecting it and then adjusting the controls to create a different color.
To replace a color:
1
Choose the color to be replaced by clicking a color in the Clip Sample view, or by
clicking the Target Color swatch and clicking a color in the Selection window.
2
Choose the replacement color by clicking the Replace Color swatch.
3
Broaden or reduce the range of the color you’re replacing by dragging the Similarity
slider.
4
Select the Solid Colors option to replace the specified color without preserving any
gray levels.
Convolution Kernel
The Convolution Kernel effect changes the brightness values of each pixel in the clip
according to a predefined mathematical operation known as a convolution. The Convo-
lution Kernel Settings dialog box displays a grid that represents a pattern of pixel
brightness multipliers, with the pixel being evaluated in the center of the grid. Use this
effect to create custom blurs and embosses.
To specify the Convolution Kernel settings:
1
Click the center text box in the group of nine. This box represents the pixel being
evaluated. Type a value (from –999 to +999) by which you want to multiply that pixel’s
brightness value.
2
Click a text box representing an adjacent pixel to which you want to assign a weighted
value. Type the value by which you want the pixel in that position multiplied. For example,
if you want the brightness value of the pixel to the right of the current pixel multiplied by
2, type
2
in the text box to the right of the center box.
3
Repeat the previous step for all pixels that you want to include in the operation. You
don’t need to type values in all of the text boxes.
4
In the Scale text box, type the value by which to divide the sum of the brightness values
of the pixels included in the calculation.
5
In the Offset text box, type the value to be added to the result of the scale calculation.
Then click OK.
The effect is applied to each pixel in the clip, one at a time.
Note:
Use the Load and Save buttons in the dialog box to save convolution settings in a
separate file, which you can then load for reuse in other instances of the effect.