Using the Match Color command You can use the Match Color command to match the color saturation and brightness of one layer or docu-ment to those of another layer or docudocu-ment, and t
Trang 1Using the Match Color command
You can use the Match Color command to match the
color saturation and brightness of one layer or
docu-ment to those of another layer or docudocu-ment, and
to remove color casts This would be useful, say, for
unifying a series of related product photos that were
shot with slightly different camera settings or
light-ing conditions For the best results, use this
com-mand on images of the same or very similar content
(e.g., beach scenes, indoor fashion or product shots)
To correct color by using the Match Color
command:
1 Open an RGB document to be used as the source
for color and tonal values, and an RGB document
to become the target of the color match.A–B
2 Optional: Display the Histogram panel so you
will be able to monitor tonal changes in the file
3. With the target document active, on the Layers
panel, click the Background, press Ctrl-J/Cmd-J
to duplicate it, and keep the duplicate selected
4 Choose Image > Adjustments > Match Color In
the dialog, check Preview (A, next page)
5 From the Source menu, choose the name of the
source document that you opened in step 1.The
target document will instantly adopt color values
from the source document Note: If the source
document contains multiple layers, choose a
source layer (or Merged) from the Layer menu
6 Under Image Options, do any of the following:
Move the Luminance slider to adjust the overall
brightness of the image (the default value is 100)
Move the Color Intensity slider to adjust the
color saturation (the default value is 100)
Move the Fade slider to restore some of the
original color to the image, if you want to blend
the old with the new
Check Neutralize to remove any color casts from
the target document If this causes too great a
color shift, lessen the effect via the Fade slider
7. Readjust any of the sliders as needed, then click
OK (B, next page)
➤ To limit the range of colors that are used as
source data (and to help prevent odd color
shifts), create a selection in the source document
before opening the Match Color dialog, then
in the dialog, check Use Selection in Source to
Calculate Colors
A We will correct the orange cast in this photo…
B …by matching it to the more balanced color and tonal values of this photo.
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B Now the color and tonal values in this image are similar to those in figure B
on the preceding page If we were to import them into the same layout document,
they would look harmonious together.
A In the Match Color dialog, from the Source menu, we’ve chosen the image
that contains the desired color values.
REMOVING A COLOR CAST IN THE SAME DOCUMENT
ment without using another
the Source image in the Match Color
the Luminance, Color Intensity, and Fade sliders, as needed This method doesn’t work in every case, but when
it does, it’s a good quick fi x
set-tings, click Save Statistics and use the Save dialog to choose a location for the data fi le To load your saved settings, click Load Statistics
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Using the Replace Color command
By using the Replace Color command, you can adjust
the hue, saturation, or lightness of colors in specific
areas of an image using selection and color controls
in a dialog This command works best for recoloring
discrete areas that are easy to isolate
To use the Replace Color command:
1 Optional: For an RGB document that you’re going
to send to a commercial printer, choose View >
Proof Setup > Working CMYK to view a soft
proof of the image in simulated CMYK color
Once you’ve made a choice from the Proof Setup
submenu, you can toggle the proof on and off
while the Replace Color dialog is open by
press-ing Ctrl-Y/Cmd-Y Regardless of whether the
proof is on or off, the Color and Result swatches
in the Replace Color dialog always display in RGB
2 Click a layer (not a Smart Object layer) or the
Background
3 Optional: Create a selection to confine the color
replacement to a specific area.A
4 Choose Image > Adjustments > Replace Color
The Replace Color dialog opens
5 In the document, click the color to be replaced.
The color you clicked appears in the Color swatch
at the top of the dialog.B
6 Do any of the following:
To add more color areas to the selection, click the
Eyedropper tool in the dialog, then Shift-click
or drag in the preview or document window
Increase the Fuzziness value to add similar
colors to the selection, or reduce it to narrow the
range of selected colors
Check Localized Color Clusters to limit the
selection to similar, contiguous colors (We
sometimes get similar or better results by
lowering the Fuzziness value instead.)
7 If you added colors to the selection that you now
want to subtract, with the Eyedropper tool,
Alt-click/Option-click or drag in the preview or
document window (this is a temporary Subtract
from Sample Eyedropper tool)
➤ For the preview window, click Selection to
view the current selection, or Image to
dis-play the entire document To toggle between
the two display modes, press Ctrl/Cmd, then
release
A We want to recolor the purple eyeshadow in this image
We loosely selected that area first.
B We opened the Replace Color dialog, then clicked the pot of eyeshadow Areas matching that color displayed
as a selection in the preview window Our next step was to choose a Fuzziness value of 86.
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8 To replace the colors you have selected, do
either of the following:
In the Replacement area, choose replacement
Hue, Saturation, and Lightness values (you
can use the scrubby sliders) The Result swatch
will update as you do this.A Note: A Saturation
value greater than +25 may produce a
non-printable color
Click the Result swatch, choose a color from
the Color Picker, then click OK The sliders will
shift to reflect the values of the new color
Note: The Replacement sliders will stay put,
even if you click a different area of the image or
add to or subtract from the selection
9 Click OK B (For another use of this command,
see page 274.)
➤ The Replace ment sliders won’t change the
amount of Black (K) in a color for a CMYK
doc-ument That component is established by the
CMYK Working Space, which is chosen in Edit >
Color Settings
➤ To restore the original dialog settings, hold
down Alt/Option and click Reset (Cancel
becomes Reset)
B The original purple eyeshadow is now reddish brown.
A We lowered the Fuzziness value to 65, Shift-clicked more areas on the pot to add them to the selection, then changed the Hue.
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Using the Color Replacement tool
The Color Replacement tool lets you change color,
hue, saturation, and luminosity values, except
instead of using a dialog as you do with Replace
Color, you apply changes manually with a brush
You can also specify mode, sampling, limits, and
tolerance parameters for the tool And unlike the
Brush tool, which applies flat colors, the Color
Replacement tool tries to preserve the original
tex-ture as it changes colors This tool, like the Replace
Color and Match Color commands, is especially
useful to advertising and catalog designers
To use the Color Replacement tool:
1 Open an RGB image.
2 Choose the Color Replacement tool (B or
Shift-B)
3 To choose a replacement color, do either of the
following:
Choose a Foreground color from the Color or
Swatches panel, or sample a Foreground color
by Alt/Option clicking in the document
If you’re going to choose Background Swatch
as the Sampling option in step 5, choose a
Background color now.
4 If the color you chose isn’t on the Swatches
panel, add it to the panel by clicking the
New Swatch of Foreground Color button.
5 From the Options bar,choose parameters for
the tool: A
From the Brush Preset picker, choose a high
Hardness value and a low Spacing value.
To control which color characteristics the tool
applies to the image, choose a Mode of Hue,
Saturation, Color, or Luminosity We’ve been
pleased with the results we’ve gotten with
Color mode
Click a Sampling button: Continuous to
apply the current Foreground color to all pixels
the brush passes over (we prefer this option
because it lets us replace both light and dark
colors); or Once to sample the first pixel the brush crosshairs click on and apply the Foreground color only to pixels that match that initial sampled color (since this option confines the sampling to just one color, if you need to replace, say, different shades of a particular color, you would have to sample each one
sepa-rately); or Background Swatch to replace only colors that match or are similar to the current Background color
From the Limits menu, choose Discontiguous
to recolor only pixels under the pointer; or
Contiguous to recolor pixels under the pointer plus adjacent pixels; or Find Edges (our
favor-ite option) to recolor pixels under the pointer while keeping the color replacement within dis-crete shapes Note: Remember that in addition
to the Limits choice, the tool is also controlled
by the current Sampling and Tolerance choices
Choose a Tolerance value (1–100%) for
the range of colors to be recolored A high Tolerance value permits a wide range of colors
to be recolored; a low value allows only pixels that closely match the sampled color to be recolored
Optional: Check Anti-alias for smoother
transi-tions between the original and replacement colors
If you’re using a stylus and tablet, click the
Tablet Pressure Controls Size button and from the Size menu on the Brush Preset picker,
choose Pen Pressure or Stylus Wheel.★
6 Click a layer, adjust the brush diameter by
pressing [ or ], then drag across the areas to be recolored (A–D, next page) Only pixels that fall within the chosen Mode, Sampling, Limits, and Tolerance parameters will be recolored
➤ For precise control when using the Color Replacement tool, you can change Options bar settings or brush diameter between strokes
A Choose settings for the Color Replacement tool from the Options bar.
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A We want to change the light green stripes on the
woman’s sweater to aqua blue. B With the Color Replacement tool and the tool settings
shown in the figure on the preceding page, we’re painting aqua blue (our current Foreground color) over the light green on the woman’s sweater.
C Next, we zoomed in to recolor smaller areas At a
Tolerance of 40%, we were able to replace the color of
both the highlight and shadow areas within a stripe
When replacing the colors along the edges of the stripe,
we used a lower Tolerance of 15%.
D We unintentionally recolored some dark stripes, which was possible even when Find Edges was the Limits set-ting for the tool To repair the error, we Alt/Option click
to sample the original color in the darker stripe (as shown above), then will apply strokes with that sampled color.