Remove grid lines and background

[Stefan van der Walt]

On 2015-05-01 10:17:52, elyraz at mail.com wrote:
> I have an image (http://www.wetnewf.org/pdfs/hemocytometer.html) 
> and I am looking for way  to generate a new image that will only 
> show the cells and omit the background and the grid lines with 
> minimum impact on the cell dimensions.

In your case, the lines are so regular that you can simply take 
the column and row sums and see where they peak.  An example is 
shown here (sorry, the notebook output was stripped, so you'll 
have to execute it to see the actual images):

http://nbviewer.ipython.org/github/scikit-image/skimage-tutorials/blob/master/lectures/adv2_microarray.ipynb

Stéfan