BW exchange??

"A.F. Hobbacher" wrote:

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

me beg you pardon?

Not sure about this, please explain. It is not just changing black into white and vica versa is it?

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

Exactly.

Peadge 🙂

"stupid_idiot" wrote in message

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

Peadge wrote:

Exactly.

Peadge 🙂

"stupid_idiot" wrote in message

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

I don’t think so. He has colors which he doesn’t want affected. If he can select and put the black onto another layer, inverting that layer might work.

—
Comic book sketches and artwork:
http://www.sover.net/~hannigan/edjh.html
Comics art for sale:
http://www.sover.net/~hannigan/batsale.html

Oops! You’re right. I didn’t read the question fully. Will try to address this later today after work.

Peadge 🙂

"edjh" wrote in message

Peadge wrote:

Exactly.

Peadge 🙂

"stupid_idiot" wrote in message

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

I don’t think so. He has colors which he doesn’t want affected. If he can select and put the black onto another layer, inverting that layer might work.

—
Comic book sketches and artwork:
http://www.sover.net/~hannigan/edjh.html
Comics art for sale:
http://www.sover.net/~hannigan/batsale.html

just use your magic wand on the black, control I

"Peadge" wrote in message

Oops! You’re right. I didn’t read the question fully. Will try to address this later today after work.

Peadge 🙂

"edjh" wrote in message

Peadge wrote:

Exactly.

Peadge 🙂

"stupid_idiot" wrote in message

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

I don’t think so. He has colors which he doesn’t want affected. If he can select and put the black onto another layer, inverting that layer might work.

—
Comic book sketches and artwork:
http://www.sover.net/~hannigan/edjh.html
Comics art for sale:
http://www.sover.net/~hannigan/batsale.html

That would just turn the black into white which would be indistinguishable from the white label background.
I would use the magic wand to select all the white labels and then switch to the rectangular Marquee and hold SHFT to select the black text on these white labels. *THEN* I would invert (CTRL+I). This would leave all the other colors intact while switching the black and white.

Peadge 🙂

"stupid_idiot" wrote in message

just use your magic wand on the black, control I

"Peadge" wrote in message

Oops! You’re right. I didn’t read the question fully. Will try to

address

this later today after work.

Peadge 🙂

I don’t think so. He has colors which he doesn’t want affected. If

he

can select and put the black onto another layer, inverting that layer might work.

—
Comic book sketches and artwork:
http://www.sover.net/~hannigan/edjh.html
Comics art for sale:
http://www.sover.net/~hannigan/batsale.html

"edjh" wrote in message

Peadge wrote:

Exactly.

Peadge 🙂

"stupid_idiot" wrote in message

Control I

"A.F. Hobbacher" wrote in message

I have a lot of scientific diagrams and plots with colours and a

black

background. The labels are in white. How can I exchange black and

white

retaining the colours?? Up to now I have an old HIJAAK which does.

What

about >Photoshop??

AFH

G’day A.F. Hobbacher,

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

AFH

Image>Mode>Lab
Highlight just the Lightness channel.
Image>Adjust>Invert ( Ctrl + i )

—

Mick

If something is worth doing
It is worth doing to excess.

If you do that in lab mode it also changes all the colors

A.F. Hobbacher wrote:

I have a lot of scientific diagrams and plots with colours and a black background. The labels are in white. How can I exchange black and white retaining the colours?? Up to now I have an old HIJAAK which does. What about >Photoshop??

I’m sorry I’m a little late responding to this, but if you haven’t found a workable solution try 1) duplicate the image layer, 2) invert the bottom copy,
3) in the upper copy’s layer options, with "Blend If: Gray", bump the left and
right sliders (either "This Layer" or "Underlying") in toward the center a few clicks.

-Greg.