Remove white background from complex image

[m_torp]

Hello i have a rather complex logo which i have to remove the background from.
The background is completely white while the logo has a very darkish almost black color. However there are many white areas within the logo which are to small or narrow for the "quick selection tool to pickup"

Unfortunately i cannot publish the logo right now, i did however find a logo with a somewhat similar look.
I'm using Photoshop CS 5.1


Thanks alot
- Martin

 

[ibclare]

Try this: http://krysjez.wordpress.com/2009/02/22/extract-lineart-in-8-simple-steps/

 

[sprucemagoo1]

Duplicate the layer, then hide the original layer and go to- Select/ Colour Range/ choose Highlights from the drop down options. Now just press Ctrl + X.

Or you can double click the layer to get the blending options, then move the slide on the Blend If section.

 

[m_torp]

Thank you both.
The blend if slider worked extremely well, thanks a lot sprucemagoo1

 

[Paul]

All i did was duplicate and then pick the black portion with the magic wand, making sure bottom layer is turned off then make a new copy of magic wand layer.

 

[hawkeye]

You could also use blending options...just move the white slider a little and the white will disappear.

 

[Adam McIntyre]

If the image is high enough quality i would
1. Convert image mode to Grayscale
2. Convert image mode to Bitmap - select 50% threshold & output @ 72dpi/300dpi (whatever the original image DPI is)
3. Convert image back to grayscale mode
4. Convert image back to RGB mode
5. Go to Select > Select Colour Range > Use eyedropper tool and click on a white area
6. Hit backspace and delete


Converting the image to bitmap w/ 50% threshold means you're left with nothing but white and black pixels, so when you select the white area you get everything.

Using a blend mode is ok until you want to put something underneath it.