Stable vs Dev version, document image enhancement

[Josh Warner]

Hi Parand,

Welcome!  Most of the gallery examples work in the current release (0.7.2 I 
believe), but the rank filter is in a PR that was merged recently, and is 
presently only in the dev version.  You may want the functionality in the 
rank filter for OCR work, where fast local operations like the otsu 
threshold could be very beneficial.  

I'll let other people answer the questions about specific references as I'm 
on the road, but I think most of what you need to do is available in 
scikit-image.

Josh Warner


On Wednesday, December 12, 2012 7:00:24 PM UTC-6, Parand Darugar wrote:
>
> Hello,
>
> I'm new to scikit-image, having mostly used PIL and imagemagick to date. 
> Looks very promising, thanks for putting it together.
>
> A few newbie questions:
>
> - It seems the examples in the gallery are based on the dev version as 
> opposed to the stable version? Therefore I assume it's recommended to use 
> the dev version instead of the "pip install" version? I just tried the 
> latest from git and am getting some errors (see below) - which version 
> should I be using?
>
> - My initial goal is image/document enhancement and cleanup in order to 
> improve OCR. The images are primarily captured via cell phone cameras and 
> scanners, so I'm looking to normalize and enhance the color, remove noise, 
> and straighten them. Any pointers to code, papers, or algorithms that may 
> be of interest would be appreciated.
>
> -- Error message --
> >>> import skimage.filter.rank as rank
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "skimage/filter/__init__.py", line 2, in <module>
>     from .ctmf import median_filter
>   File "skimage/filter/ctmf.py", line 15, in <module>
>     from . import _ctmf
> ImportError: cannot import name _ctmf
>
> Much thanks,
>
> Parand
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/scikit-image/attachments/20121213/8c8a61ef/attachment.html>