Morphological techniques

Chintak Sheth chintaksheth at gmail.com
Mon Apr 22 01:22:41 EDT 2013


Hi,

So I have been able to implement the convex_hull_object function. The
implementation is in the "convex_hull.py" file. I have also included two
tests in "test_convex_hull.py" file itself. I have submitted a PR for the
same.
https://github.com/scikit-image/scikit-image/pull/522

Johannes and Stefan, could you'll review it please ? Also if there is a
faster algorithm for the same ?

I was also thinking about having just the current convex_hull_image() with
an additional parameter, method. When method='union', i get the convex hull
of the entire image, and if method='object', i get the convex hull of
individual objects. Though this approach of defining an another function
and giving an additional option of returning convex hull of individual
segmented objects, seemed interesting. Also helps keep the code clean.

Any comments on this ?

Thanks,
Chintak


On Mon, Apr 22, 2013 at 1:56 AM, Chintak Sheth <chintaksheth at gmail.com>wrote:

> Hi,
>
> So I have been
>
> Chintak
> On Apr 15, 2013 11:40 PM, "Stéfan van der Walt" <stefan at sun.ac.za> wrote:
>
>> Hi Chintak
>>
>> On Mon, Apr 15, 2013 at 7:55 PM, Chintak Sheth <chintaksheth at gmail.com>
>> wrote:
>> > I am really excited about being a part of this community and have been
>> > pretty fascinated by morphological techniques in particular. I would
>> really
>> > want to contribute something in this direction. Can someone please
>> point me
>> > to possible bugs or algorithms in this field that need implementations ?
>>
>> Welcome!  There are several places to start, e.g. we need a
>> convex_hull_objects function, as well as adapting rank filters to
>> handle int16 correctly (not as 12-bit integers).
>>
>> Otherwise, I'd also keep an eye on IEEE Transactions on Image
>> Processing, and what other leading image processing packages
>> implement.
>>
>> There are some pretty interesting segmentation and feature detection
>> applications of morphology too.  The sky's the limit :)
>>
>> Cheers
>> Stéfan
>>
>> P.S. There are plenty of bugs to fix too:
>> https://github.com/scikit-image/scikit-image
>>
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