[GEM-dev] pix_equal (was Re: new pix_colordetect)

[Ricardo Fabbri]

Hi,

just a sample of the tracking that the proposed [pix_equal] allows:

http://vimeo.com/36239477

Let me know if this simple object should be included in Gem.
Best,
Ricardo Fabbri
--
Linux registered user #175401
www.lems.brown.edu/~rfabbri
pt.wikipedia.org/wiki/IPRJ
labmacambira.sf.net



2012/2/24 Ricardo Fabbri <rfabbri at gmail.com>:
> Hi,
>
> following up on the color classification thread, I had promised a
> pix_equal object to mark the pixels that are equal to a given RGBA
> value/range. It is quite useful in the present form;
> perhaps another solution could be sought for the long term, but for
> now this does a useful job,
> in particular being required to decode the output of
> pix_colorclassify. pix_bitmask doesn't work for this,
> as what I need is an "and" interval test on all RGBA channels.
>
> The code for pix_equal and its documentation is are in the
> 'pix_equal_new' branch at this repo:
> git://github.com/rfabbri/Gem.git
>
> I rebased the branch on the latest Gem git master branch.
>
> I look forward to your feedback on this simple object, and your
> opinion about incorporating
> it into Gem.
> Ricardo Fabbri
> --
> Linux registered user #175401
> www.lems.brown.edu/~rfabbri
> pt.wikipedia.org/wiki/IPRJ
> labmacambira.sf.net
>
>
>
> 2011/11/14 IOhannes zmölnig <zmoelnig at iem.at>:
>> On 11/14/2011 06:30 PM, Ricardo Fabbri wrote:
>>> That will come with a later contribution. I wrote a [pix_equal]
>>> external which can change any pixels "equal" to some value within a
>>> given cosed r & g & b range. I use it to separate the colors into
>>> different images, change the color label, etc.
>>
>>
>> actually, i think what we really would need was a (high-performant,
>> jit-compiled) [pix_expr] object, that would allow to create such objects
>> in Pd space rather than in C++ space.
>>
>> fgmasdr
>> IOhannes
>>
>>
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