Judging The Effectiveness Of Wool Combing By The Entropy Of The Images Of Wool Slivers

F. Carvalho Rodrigues; Fernando D. Carvalho; J. Pinto Peixoto; M. Santos Silva

doi:10.1117/12.952667

5 April 1989 Judging The Effectiveness Of Wool Combing By The Entropy Of The Images Of Wool Slivers

F. Carvalho Rodrigues, Fernando D. Carvalho, J. Pinto Peixoto, M. Santos Silva

Proceedings Volume 1075, Digital Image Processing Applications; (1989) https://doi.org/10.1117/12.952667
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

In general it can be said that the textile industry endeavours to render a bunch of fibers chaotically distributed in space into an ordered spatial distribution. This fact is independent of the nature the fibers, i.e., the aim of getting into higher order states in the spatial distribution of the fibers dictates different industrial processes depending on whether the fibers are wool, cotton or man made but the all effect is centred on obtaining at every step of any of the processes a more ordered state regarding the spatial distribution of the fibers. Thinking about the textile processes as a method of getting order out of chaos, the concept of entropy appears as the most appropriate judging parameter on the effectiveness of a step in the chain of an industrial process to produce a regular textile. In fact, entropy is the hidden parameter not only for the textile industry but also for the non woven and paper industrial processes. It happens that in these industries the state of order is linked with the spatial distribution of fibers and to obtain an image of a spatial distribution is an easy matter. To compute the image entropy from the grey level distribution requires only the use of the Shannon formula. In this paper to illustrate the usefulness of employing the entropy of an image concept to textiles the evolution of the entropy of wool slivers along the combing process is matched against the state of parallelization of the fibbers along the seven steps as measured by the existing method. The advantages of the entropy method over the previous method based on diffraction is also demonstrated.

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F. Carvalho Rodrigues, Fernando D. Carvalho, J. Pinto Peixoto, and M. Santos Silva "Judging The Effectiveness Of Wool Combing By The Entropy Of The Images Of Wool Slivers", Proc. SPIE 1075, Digital Image Processing Applications, (5 April 1989); https://doi.org/10.1117/12.952667

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KEYWORDS

Image processing

Digital image processing

Cameras

Diffraction

Optical fibers

CCD cameras

Time metrology

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