On Fri, Sep 28, 2012 at 9:25 AM, andrew = mcelroy <sophrinix@gmail.com> wrote:

On Mon, Sep 24, 2012 a= t 8:40 PM, Nicol=F2 L. <lists@ruby-forum.com> wrote:
<= blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"> I'm trying to build a program meant to recognize plants by looking at a=
picture of their leafs or similar parts.

I'm doing this kind of detection with animals.

There = is a ruby opencv library, but it doesn't have 100% api coverage and ope= ncv can be a beast in its own right to install.

=A0

The approach that I had thought to would be:
- create a mathematical model of the leaves to be recognized
- maybe use some algorithm to combine two pictures from different angles into one with depth measurement (absolutely don't know how this is done= )
- confront the elements of the picture using distance or colors with the models in the database (basically using only the shape of the borders)
<= /blockquote>

Stone Age. You will need a lot of sam= ples, but there are a lot of algorithms you aren't even considering.

You need to look more into Boosting, Bagging, and Stacking=A0algorithm= s.

For starters look at AdaBoost or WaldBoost=A0algorithm.

<= div>Also, check out Bag of Words and SIFT.

=A0<= /div>

Therefore I am looking for some good and deep guides/sources to teach me something about this kind of "data modeling", geometrical analysi= s and
image processing. For now the best that I could find is the Camelia
Library (witch helps a little with colors, but I don't think will be enough for the shape detection).

= You need something like opencv. =A0I think the library you need is ruby-ope= ncv.

It can be found on github. Follow the instructions for insta= lling opencv with python first

and build it from source. Also, you are going to want to have fftw lib= rary installed.

As for reading material, computer = vision/ machine learning for plants has a lot of literature.

Start using scholar= .google.com and don't be afraid to ask people at other .edu address= es for advise.

hope this helps.

One more thing, brush up on your calculus, matrix algeb= ra, statistics, and trig.

You want to add the search term "d= eformable parts" because after all plants leaves are not stiff.

They can twist, bend, fold, etc. You wouldn't want wind screwing u= p your detection.

=A0

Andrew M= cElroy

I'm aware that this is not a simple project, but I am willing to learn<= br> and spend a good amount of months to get this started

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