We present an efficient numerical solution of a PDE-driven model for color image segmentation and give numerical examples of the results. The method combines the vector-valued Allen-Cahn phase field equation with initial data fitting terms with prescribed interface width and fidelity constants. Efficient numerical solution is achieved using a multigrid splitting of a finite element space, thereby producing an efficient and robust method for the segmentation of large images. We also present the use of adaptive mesh refinement to further speed up the segmentation process.

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The goal of this article is to examine the nature of technology in view of Georges Bataille's notion of intimacy. After providing a summary of Bataille's critique of technology, I offer my response and show that a technological device can reach such a degree of familiarity that it becomes indistinguishable from our psychophysical personality. In this sense, we experience technology not as instrumentation, but in intimacy. The old theory of technology as organ-projection is, therefore, reinterpreted to produce a theory of technology that includes the technological process in its entirety, from the moment of invention and innovation, involving a movement of transcendence and objectification, to the moment of intimacy.

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