Linear interpolating method and color conversion apparatus using

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358160, 358280, G06F 15353

Patent

active

045119899

ABSTRACT:
A linear interpolating method and apparatus for signals in a memory wherein first signals are converted into second signals by addressing in at least four-dimensional fashion, for use in a color picture processing machine such as a color scanner, a color facsimile, a color T.V. monitor, and other signal processing machine converting coordinates of signals with at least four variables, are disclosed. The second signals corresponding to certain stepped values of the first signals are read out of the memory, and then the values of the read signals are interpolated at an interpolation point positioned therebetween. At least four-dimensional interpolation unit space is divided into at least four-dimensional dissection spaces, and then it is discriminated which of the dissection spaces includes the interpolation point. Then, the interpolated value at the interpolation point is obtained as a weighted sum of the values at the vertices of the discriminated dissection space.

REFERENCES:
patent: 3412240 (1968-11-01), Hunt et al.
patent: 3862404 (1975-01-01), Fiedrich
patent: 4354243 (1982-10-01), Ryan et al.
patent: 4402012 (1983-08-01), Knight

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