So, what I would do is go to Select < color range. A dialogue box should pop up and you can click on the background color of the image (white) and then adjust the fuzziness bar to exclude the dress and only select the white (eveything but the background should show up as solid black ideally)
You may have some issues around the eyes, which may be closer to a pure white than the dress, so you may want to go in after the background is selected and remove selection around the eyes or any other area by using the lasso tool (and holding down option as you trace around it) to subtractive select.
Once just the background is selected, make sure the layer is unlocked and delete!
If you are not happy using the pen tool to cut out. Copy the layer with the figure on it and change the levels so the colours become mor exagerated. You can then use the magic wand tool to select the white areas on the exagerated layer and delete the white. CTRL click on the thumb nail of the exagerated levels layer and click on your original colour layer. Go to select - inverse and press delete. Now drag your exagerated layer into the garbage.
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Add a blank layer below the illustration. (Hold down Cmd key (Ctrl key on PC) and click on the Create New Layer symbol)
Double click on the image layer to bring up Layer Styles
In the Blend If section move the top right triangle to the left so that it registers 254 rather than 255
Choose Layer > Flatten Image
I didn't know that Norman. Great.
Good grief! Where have you been all my life Norman? Great tip!
Another technique would be to use the Magic Wand. If the image is a Background layer, first click the padlock icon to the right of the layer to unlock it.
Select the Magic Wand.
Set the tolerance to zero.
Click in the white background area. Hold down Shift to click and add the other white areas.
You could then either hit the Delete key to delete the white background, or you could Select> Inverse and create a layer mask to hide the background. Layer mask icon is on the bottom of the Layers panel.
For the G logo, use the pen tool to draw a path. Then either set it to a clipping path or make a selection to delete the background.
Was the "G" a letter on a text layer? Then this text layer can help you to create the selection.
If the original text layer has been deleted it's not so hard to create a new one - provided you remember the font name.
You may find that, even with guides, it would not be easy to pen an accurate diagonal, especially in the lower left corner.
You may consider this before using the pen tool or the Polygonal Lasso tool to make your selection:
1.Make a duplicate layer
2, Magic Wand to select and delete the white on the dupe layer, Then Cmd+D to deselect the marching ants.
3 Edit > Transform > Flip Vertical
4, Set the Blending Mode to Multiply
5, Use the North Keyboard Arrow key to align the two layers
Then, because the design is not perfectly symmetrical*:
6 Use the pen tool to outline, then convert to selection
7,Turn off the eye on the top layer and trash the lock on the bottom layer
8. With the Background layer chosen, tap the delete key
If is was symmetrical, you could use a composite of the layers as the basis for a Magic Wand selection.
The illustration above shows both layers after deletion of the white, for clarity.
Norman, can you explain a little bit further how you then get to delete the background layer after you flatten them? It may be obvious, but I am stomped. thank you, Katharina
Hi Katharina. There is no flattening involved. When you perform Steps 4 & 5 you will see the result that looks like the one in the picture but with a white surround. Do Step 6: Use the pen tool to outline the image. Then go to Paths and click on the third symbol at the bottom of the Paths panel to convert your path into a Selection. Then choose Select > Inverse so that now you have selected the white surrounding area. Then do Step 7 and with the bottom layer chosen, tap the delete key. I hope this helps. Good luck.
I AM MAD AT ADOBE!!! If you right-click on a layer, you can bring up blending modes and bring down a drop-down menu. There are many choices, BUT CLICKING THE "SCREEN" OPTION, THE WHITE BACKGROUND WOULD GO AWAY!!!!!!!!!! NOW IN PHOTOSHOP 2018 THE SCREEN OPTION DOES PRETTY MUCH >NOTHING< TO THE WHITE!!!
ADOBE, I am mad. Please change this feature back to what it was before, as what used to just be one step, is now many!!!
Screen blending mode has not changed. Screen with black leaves the underlying image unchanged , with white it turns the underlying image white. Colours between lighten the image. It has always worked that way and has never removed white.
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davescm is right. Here we need to make the paths with our own eyes. So manual action is perfect on such image. Or you could try to apply the channel masking formula on that image that you have already been shown.
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Here's an idea that would only work in this particular situation, but it never hurts to have too many tools in your Photoshop toolbox.
Use the Rounded Rectangle tool with is set to Path in the options bar.
It would be best to set up Guides as Norman suggested.
Increase the radius until it exactly matches the chamfer ends. They will default to being the same on each corner, so no problem with the top right that has a chamfer end on white.
Now for the clever bit
Select the Pen tool and Alt click on all of the points which change them from curve points to corner points.
This might be useful going forward. (I hate that phrase, but it is too darn useful to ignore! )