Digitally Detecting Tea Leaves

I have done some experiments to explore means by which I can explore tasseomancy as a site for critiquing the pattern seeking prerogative of knowledge discovery in database (KDD) algorithms by juxtaposing divination alongside them.

The eventual aim is to explore the distillation of experience that occurs exclusive to each system, as I mentioned in my earlier post. This means some experiments into how a database and appropriate tables can be constructed to capture every aspect of the tea seers process and practice. In some ways I am setting this concept up to fail as I believe that something of this process will escape the intense categorisation which is a prerequisite of relational database architectures and their need for normalisation. In so doing maybe this will prompt reflection on how every database system, irrespective of their predictive prowess, is ultimately a modelling that holds more true to set theory logic than the nuances of our lived experiences (and said nuances being elided is not trivial given the faith and belief placed in the predictive power of data mining).

In order to fully explore KDD algorithms I will need a suitably large amount of data. That is unavailable to me at present so I need another area of interaction between the tea reader and the machine with which they will interface. A visual analysis of the tea leaf pattern left in the cup provides a ready pattern for the computer to interpret.

I have settled upon using a webcam and I’m currently exploring two ways of providing the computer a chance to see the tea leaf pattern. One method comes via a snapshot being taken after the tea pattern has been scrutinised by the tasseomancer.

The above photos are rough webcam snaps, exposure modifications will display pattern but it is important that exposure process can be simply automated by code

Another comes via the whole process of tea drinking being recorded via a webcam positioned at the base of the container from which the tea is drank. Doing this necessitated using a glass, which according to most tasseomancy practice is not ideal. However it does provide an interesting perspective on tea leaf reading. (see the video below, which is quite poor quality due to the fact that I am getting to grips with the exposure functions of Linux UVC webcam software)

Webcam Rig used to capture above video

Capturing the duration of the entire tea drinking process is something I would like to do, and also a period of time I would like to analyse. I am struck by the idea that duration is an important aspect of any of these introspective, gnostic (in the Peter J. Carroll sense) practices. This contrasts markedly with the types of temporality at work in the CPU crunching the numbers which determine the patterns discerned by the image analysis algorithms (silicon flip flops and clock times).

Once the software crimps have been ironed out and I get a clearer idea of the registers by which the machine will pattern analyse the tea leaf patterns I hope to engage with the tasseomancy practice in depth. In essence I will be the entity responsible for determining the data architecture which at some future data KDD algorithms will explore and generate new knowledge (defined within KDD discourse as “novel patterns of information – an epistemic shift in what we deem knowledge).

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~ by Stephen Fortune on February 24, 2011.

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