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AssigneeSilicon Optix Inc.
InventorsTomislav Jasa, Zorawar S. Bassi, Louie Lee
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An image transformation method for translating a non-linear 2D geometrical transformation into two separable 1D geometrical transformations first determines the inverse of the 2D geometrical transformation to form an inverse 2D geometrical transformation. Then the method converts the inverse 2D geometrical transformation into an analytical inverted 2D geometrical transformation and separates the analytical inverse 2D geometrical transformation into first and second 1D geometrical transformations. The method then represents said inverse 2D geometrical transformation and first and second 1D geometrical transformations as tensor spline surfaces and then compares an evaluation of said first and second 1D geometrical transformations at each pixel with an evaluation of the analytical inverse 2D geometrical transformation at each pixel. If the error evaluation does not meet a predetermined level of performance then the separation and transformation steps are repeated. Since the method involves one-dimensional spatial transform processing it results in reduced calculations, efficient memory access, and ability to process data in a real-time environment. In-addition, since the method provides a compact representation of the spatial transforms, it can be scaled for a particular level of precision.
An electronic method for non-linear two-dimensional (2D) digital image transformation of an input image having a plurality of input pixels onto an output image having a plurality of output pixels, said method comprising:
An electronic system for non-linear two-dimensional (2D) digital image transformation of an input image having a plurality of input pixels onto an output image having a plurality of output pixels, said system comprising:
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