1,721,086 research outputs found

    A 3D vision system based on one-shot projection and phase demodulation for fast profilometry

    No full text
    We present a 3D vision system based on the projection of a single fringe pattern of incoherent light and on robust phase coding. A novel projection scheme is exploited: two sinusoidal gratings at different frequencies are combined into a single pattern, and phase demodulated in the natural domain of the signal. The method yields the determination of two phase maps, whose sensitivity to height variations is proportional to the frequencies of the two grating components. Robust phase unwrapping is implemented, where the phase ambiguity of the fine grating component is naturally compensated for by the phase values evaluated by using the coarse one. As a result, both a high measurement resolution and an extended height range are obtained. The method requires the projection of a static pattern. Hence, even a low-cost slide projector can be used as the projection device. Moreover, the system turns out to be suitable for dynamic and real-time measurement applications. In addition, it may be fruitfully used as the acquisition sensor in full-optical reverse engineering applications. In this paper, the measurement principle and the design issues of the instrument are presented. The measurement performances are discussed, in relation to both the input–output characteristic of the instrument and the acquisition of free-form shape

    Design & distretto tessile comasco. Casi studio nel polo del lusso: cravatta, arredo, moda.

    No full text
    La presente ricerca ha esplorato la filiera del progetto, del prodotto e del processo del tessile comasco, ricostruendo ruoli, flussi di conoscenze e competenze degli attori coinvolti nell'azione progettuale dalla generazione del concept fino alla sua commercializzazione, mostrando casi di eccellenza del distretto serico nei settori merceologici del tessuto d'arredo, dell'accessorio e dell'abbigliamento

    Design e tessile comasco nella ricerca Sistema Design Italia

    No full text
    Breve descrizione della ricerca nazionale Sistema Design Italia e delle connessioni con le specificità del distretto tessile serico comasco e con la manifestazione internazionale Miniartextil, anche in riferimento alla prossima istituzione del Corso di Studi in Design che sarà attivato presso il Polo Regionale di Como del Politecnico di Milano
    corecore