Timing comparisons between mahotas & scikits-image

[Luis Pedro Coelho]

Hello,

In the context of my previous email to pythonvision

https://groups.google.com/d/topic/pythonvision/SSCF4LUlRKQ/discussion

I made a timing comparison between mahotas & scikits-image.

operation   | mahotas  | pymorph  | skimage
------------+----------+----------+---------
erode       |    10.80 |    14.33 |    80.17
dilate      |    11.44 |     8.93 |    41.59
open        |    22.45 |    23.20 |    80.18
center mass |     7.05 |       NA |       NA
sobel       |    75.03 |       NA |   105.72
cwatershed  |   201.03 | 56586.50 |   290.41
daubechies  |    19.05 |       NA |       NA
haralick    |   306.48 |       NA |  7391.37

(Best viewed with fixed-width fonts)

The unit of measurement is the time it takes to run ``numpy.max(image)`` 
Mahotas is always faster than skimage (although pymorph is better for certain 
morphological basic operations). I used GCLM in skimage to stand for Haralick, 
which is a rough approximation.

I attach the script that generates these (against github skimage). If you 
think that I have used skimage incorrectly, please let me know.

Best,
-- 
Luis Pedro Coelho | Institute for Molecular Medicine | http://luispedro.org
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