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single color with black and white

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\ poppy flower /

unread,
Jan 2, 2003, 5:38:54 AM1/2/03
to
on a colorful image, how can i make it
black and white but with only a specific
color is shown?


Dagnytgrt

unread,
Jan 2, 2003, 8:25:22 AM1/2/03
to
what I'd do - copy whole image into a new file. Make mode grayscale, then back
to RGB or CMYK. Copy portion of color you want saved from original, paste and
move into position on b/w image.
Sally Milo
http://www.milodesign.com
Tucson, Arizona

Unknown

unread,
Jan 2, 2003, 10:40:16 AM1/2/03
to

>==============
There are a number of methods to do this. But assuming that you want
the color shown to be the same as in the original image

1. Image --> Adjustments --> Desaturate
The entire image will appear to be in grayscale, but photoshop still
retains the color information and remains in RGB mode)

2. Then use the History Brush (make sure it's not the Art History
Brush) and paint in the areas in which you want the color restored.
If the area of color restoration is complicated, use an appropriate
method of selection first.

Another method would be to:
1. duplicate the colored image layer
2. Image --> Adjustments --> Desaturate
3. Layer --> Add Layer Mask --> Reveal All
4. Set foreground/background colors to Black/White
5. Use Paintbrush to paint foreground color in area where you
want to show color, or select that area and paint with
PaintBrush . . . or, instead of using Paintbrush, reverse
foreground/background colors so that background is black
and use Eraser Tool to reveal color.


lycose

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Jan 2, 2003, 12:47:04 PM1/2/03
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On Thu, 02 Jan 2003 10:38:54 GMT, "\\ poppy flower /"
<YourClothe...@hotmail.com> wrote:

yet another way is to desturate the image then go to the history
pallate and take a snapshot of the desaturated image.. then select
that image and then select the brush on the original.. on the tool
bar, select the history bursh. u are then painting with the history .

yet another way of many....
make a new copy layer of the color and desaturate. add a layer mask
so the color layer shows through while painting with a normal black
brush.

\ poppy flower /

unread,
Jan 2, 2003, 5:15:40 PM1/2/03
to
thanks a lot and i tried both methods and they
all work good on simple images. but still hard to
work with on complicated images. i tried to select
the area where i want to work on, but it will take me
hours to select.

can i just make a specific color value (RGB) have color
and all the rest black and white?

<Bernie> wrote in message news:hem81vkt0q58n7bf7...@4ax.com...

Unknown

unread,
Jan 2, 2003, 5:48:36 PM1/2/03
to

>>
>> >on a colorful image, how can i make it
>> >black and white but with only a specific
>> >color is shown?
>> >==============
>> There are a number of methods to do this. But assuming that you want
>> the color shown to be the same as in the original image
>>
>> 1. Image --> Adjustments --> Desaturate
>> The entire image will appear to be in grayscale, but photoshop still
>> retains the color information and remains in RGB mode)
>>
>> 2. Then use the History Brush (make sure it's not the Art History
>> Brush) and paint in the areas in which you want the color restored.
>> If the area of color restoration is complicated, use an appropriate
>> method of selection first.
>>
>> Another method would be to:
>> 1. duplicate the colored image layer
>> 2. Image --> Adjustments --> Desaturate
>> 3. Layer --> Add Layer Mask --> Reveal All
>> 4. Set foreground/background colors to Black/White
>> 5. Use Paintbrush to paint foreground color in area where you
>> want to show color, or select that area and paint with
>> PaintBrush . . . or, instead of using Paintbrush, reverse
>> foreground/background colors so that background is black
>> and use Eraser Tool to reveal color.
>>

>>=======================


>thanks a lot and i tried both methods and they
>all work good on simple images. but still hard to
>work with on complicated images. i tried to select
>the area where i want to work on, but it will take me
>hours to select.
>
>can i just make a specific color value (RGB) have color
>and all the rest black and white?

====================
The key to many manipulations in Photoshop is proper "selection".
Some methods of selecting are better than others in certain
situations. I'm not entirely clear on what you mean by "complicated
images". If you can give me a link to the photo, or email it to me at
ber...@comcast.net, I'll be happy to try to help.

Bernie


\ poppy flower /

unread,
Jan 2, 2003, 9:19:23 PM1/2/03
to
http://www.wwu.edu/~chengy/test.jpg

on above image for example, i tried so hard to
make the orange color flower shown, but not
the leaves. i remember in microsoft's photo draw,
i can select areas in the image by color value. so,
in photo draw, if i click on one of the orange flowers,
all orange flowers are selected. of course, i can set
how close the color is to orange.
um... am i making it clear?

<Bernie> wrote in message news:b1g91vsedkn2relvo...@4ax.com...

\ poppy flower /

unread,
Jan 2, 2003, 9:21:23 PM1/2/03
to
thanks. this is easier than the history brush
method. but once i handled the history brush,
they become equally easy.

"Dagnytgrt" <dagn...@aol.comnocrap> wrote in message
news:20030102082522...@mb-ba.aol.com...

lycose

unread,
Jan 3, 2003, 9:58:17 AM1/3/03
to

Also try using the color range tool.... put up both BW and color
pictures in your layer palette. With the color picture showing, hit
select/color range. use the eye dropper on the color photo to select
a range of colors that are common in all the flowers. You can select
more than one. use the slider to keep your selection white and
background dark.

add a mask to the b/w picture and paint with black over the selections
you just made to reveal the color.


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