engleski

The aplication of the image analysis for determination of the optical nonhomogeneity of paper

The image analysis is an interesting method for determining the number of the residual dirt particles within the defined classes and the surface they occupy on handsheet produced from fibres in different phases of the paper recycling process or produced on the recycled paper. Dirt particle analysis procedure includes: image acquisition, digitalization, image enhancement, segmentation, binary image processing, mesurement of dirt specks and data output. This work presents the influence of the particle size distribution on brightness. The influence of the sample preparation on the dirt count area was discussed. The investigation results stress the need for brightness monitoring and determining the particle size distribution for a good control of the phases of the deinking flotation process as well as the quality control of the final product.

paper recycling; image analysis; brightness

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