Layers or Channels? Calling all Photoshop gods

D
Posted By
dallasidiot
Sep 16, 2003
Views
540
Replies
8
Status
Closed
Ok here is what I am trying to do.

I have an image of turtle on a white background, I also have a soccer ball on a white back ground.

I am trying to make the tutles shell look like it is made of a soccer ball.

Step 1 I cut out the soccer ball (lasso tool).
Step 2 I traced the turtle shell (lasso tool) then I used past in.

The problems i that I need to keep the highlights and shadows of the turtles shell so that the soccerballshell has the highlights and shadows of the orginal shell, that way it looks real.

I have also tried the same but creating an alpha channel, but I must not of done it correctly because I still don’t have the shadows and highlights.

Thanks, Jason

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P
Phosphor
Sep 16, 2003
Stick the turtle on the top layer, and the ball directly below the turtles shell on the layer below, no need to cut any thing out. Now with the rubber set to 50% transparency rub away at the shell until you get the desired affect. Basic but quick.
PH
Photo Help
Sep 16, 2003
Jason,

You can do it by pasting into a layer above the shell and changing the opacity. Basically what Peace Pipe is saying in reverse. The problem is you will still see the green of the turtle shell in the white. Meaning you won’t have a true white.

You may want to duplicate the shell to a new layer. Desaturate the shell. Turn down the brightness to make the shell close to black. CTRL + I to invert. Now paste the soccer ball image above the new shell layer. Set the layer mode of the ball to something like multiply or darken.

Or you could turn the shell itself into a texture to use with the texturizer filter.
P
Phosphor
Sep 17, 2003
dallas,

I don’t know if this will work (I’m an intermediate newbie) but I’d be interested to see if it would accomplish your goal.

1. Have the turtle selection you have captured with the lasso tool on bottom layer with transparent background.

2. Then move the soccer ball image you have captured on the next layer and then clip them together.

Clipping method–

In the layers palette, (windows–hold down alt key) (Mac hold down option key) and position your cursor on the line dividing the two layers and you will see the cursor change to two overlapping circles and then click.

If my theory is correct, your soccer ball will clip to your turtle image exactly and then you can do other blending magic.

I don’t have much experience with this, but the help section of the program can guide you further with blending and clipping.

I’d be interested to know if I’m anywhere close to "reality"—what do the "smart people" say??

Patty
JM
John Mensinger
Sep 17, 2003
Here’s something else to experiment with:

It sounds like you’ve already got the shell "covered" by soccer ball "skin." Now, with the soccer ball skin layer hidden, look at your Channels Palette, and find the channel that best contains the shell’s highlights and shadows. Duplicate that channel, creating an Alpha channel, (Alpha 1).

Now go back to the Layers Palette and select the layer containing the soccer ball skin, (it will again become visible). With that layer active, choose Filter > Render > Lighting Effects.

At the bottom of the Lighting Effects dialog, set the Texture Channel to Alpha 1, (the shell’s highlights and shadows), and experiment with the lighting settings until you get even lighting on the soccer ball skin…(I’d start with an ‘Omni’ Light Type, at low Intensity and medium-high Ambience, and play with the other settings until realism is achived).

This seems complicated at first, but when you get the knack of how it works, it can be very effective and quite fun.
JM
John Mensinger
Sep 17, 2003
And/or, see this excellent Russel Brown tutorial, paying particular attention to the "Group With Previous Layer" technique at the end.

<http://www.russellbrown.com/tips/moviesps/LiquifyAlert.mov>
D
dallasidiot
Sep 17, 2003
Well I got the best result with John Mensingers idea so I guess he is the winner on this one. If anyone is interested I can send you a jpeg of the result.

I had to color in some of my own shadows and highlights to give it a more realistic look.

It still isn’t perfect but I guess I will have to play with it a little more.
JM
John Mensinger
Sep 17, 2003
Hey dallas…

Strange, but it’s not the first time I’ve been called a "winner." I’m Glad you’re moving toward the result you were looking for. Anyway, just to be clear, the Lighting Effects technique isn’t my very own idea…just something I picked up somewhere some time ago and I find it useful for creating the illusion of highlight/shadow contour and texture in certain cases.

You should not discount the Russel Brown technique I also pointed to. I think it works better in some ways, and seeing it somewhat demystified the usefulness of the "Group with previous layer" setting, for me anyway.

Photoshop’s tools and techniques seem to go on and on, and often, the best effects are achieved using multiple methods in part and/or in combination.

I’d be intersted in seeing the image if/when you’re finished with it. (Click my name to get my email address). Thanks.
PC
Patty Clarke
Sep 17, 2003
dallas,

Even though I’m a "loser" :(, I’d enjoy seeing your finished project as well.

TIA,

Patty

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