[SciPy-user] Sobel filter, magnitude and gradient direction

[Rick Wagner]

Hi Daniele,

> import Image
> import scipy
> import scipy.ndimage
>
> data = Image.open("image.jpg")
> image_magnitude = scipy.ndimage.filters.generic_gradient_magnitude 
> (data, scipy.ndimage.filters.sobel)
> output = Image.fromstring("RGB",(320,210),image_magnitude.tostring())
> output.save("imagem.jpg","JPEG")

You might want to plot the resulting array before saving the data, to  
make sure that it's the filter, and not the data. You can do this  
using matplotlib's imshow command.

--Rick

http://www.scipy.org/Cookbook/Matplotlib

------------------------------------------------------------------------ 
-
Rick Wagner, Graduate Student Researcher
UCSD Physics
9500 Gilman Drive
La Jolla, CA  92093-0424
Email:  rwagner at physics.ucsd.edu
WWW:    http://lca.ucsd.edu/projects/rpwagner
(858) 822-4784 Phone
------------------------------------------------------------------------ 
-
Measuring programming progress by lines of code is
like measuring aircraft building progress by weight.
--Bill Gates
------------------------------------------------------------------------ 
-



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.scipy.org/pipermail/scipy-user/attachments/20080321/538a21b8/attachment.html>