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Iordanov, V.P. (author), Sarro, P.M. (author), Wolffenbuttel, R.F. (author), Vellekoop, M.J. (author)The invention relates to a method of transforming a colour image, wherein for each separate pixel a measured level of lightness, a measured chroma and a measured colour is determined, followed by a predetermined adjustment in the three-dimensional level of lightness, chroma and colour, wherein a. for each separate pixel a direction of adjustment...patent 2002
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Nieuwenhuis, J.H. (author), Lubking, G.W. (author), Vellekoop, M.J. (author)The invention relates to an apparatus for determining the shape and/or size of small particles, comprising a cell into which the particles are placed, at least one light source for illuminating the particles, and at least one one-dimensional image sensor for measuring an image of the illuminated particles. The cell is embodied as a conduit...patent 2002
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Vellekoop, M.J. (author), Hjelt, K.T. (author), Lubking, G.W. (author)An apparatus for measuring a small quantity of a liquid, for example, in connection with a medical diagnostic test, comprising at least one chamber for receiving the liquid, which chamber comprises a bottom and upright side walls and at least two electrodes to connect to a voltage source and a measuring system for determining the electrical...patent 2000