Digitization errors in small circles

[Adam Hughes]

Thanks Juan.  I'm trying to write a section for a paper about imaging
nanoparticles and one of the key criteria is finding the lower limit in
resolution at which it's still safe to trust the encoding routines,
otherwise I wouldn't be so pedantic.  I'll try to followup and see if I can
get a PR like that in.  Hope it's kosher to cross post with this stuff.


On Thu, Feb 20, 2014 at 8:25 PM, Juan Nunez-Iglesias <jni.soma at gmail.com>wrote:

> I saw your post on the ImageJ list! =) imho that PR would be most welcome.
>
>
>
> On Fri, Feb 21, 2014 at 4:56 AM, Adam Hughes <hughesadam87 at gmail.com>wrote:
>
>> Thanks.  I suspect that the algorithm you guys have is probably a good
>> solution for the encoding, and the fact that it gets a bit fuzzy at very
>> low pixel count is just the price one pays for having a very applicable
>> encoding algorithm.  I noticed that imageJ's encoding outputs the same area
>> and perimiter by the way, but they apply some sort of the correction before
>> outputting circularity.  If I get a chance to see what the circularity
>> correction is; if it's not too hard, maybe I can put in a PR for a new
>> descriptor called circularity to circularity_adjusted.
>>
>>
>>
>> On Wed, Feb 19, 2014 at 10:17 PM, Juan Nunez-Iglesias <jni.soma at gmail.com
>> > wrote:
>>
>>> On Thu, Feb 20, 2014 at 4:42 AM, Adam Hughes <hughesadam87 at gmail.com>wrote:
>>>
>>>> Thanks Juan.  Ya I had read that, sorry to make you post the source
>>>> link.  I guess I just wanted to confirm that what I was seeing made sense
>>>> and was a product of the drawing routine rather than some sort of error or
>>>> misinterpretation.
>>>>
>>>
>>> No worries. I'd like to be more help but this is not my code so I'm as
>>> familiar with it as you are. If you figure out a better approximation, a
>>> pull request would be very welcome! =)
>>>
>>> Juan.
>>>
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