Electronic image resolution enhancement by frequency-domain...

Details Electronic image resolution enhancement by frequency-domain... Electronic image resolution enhancement by frequency-domain...

G - Physics

06

T

G06T 5/00 (2006.01) G06T 3/40 (2006.01)

Patent

CA 2148433

The resolution of an original image, represented as a pixel array (49, 66), is increased by applying a spectral transformation to the pixel array, producing a spectral array (52, 66) representing the image, and then applying an inverting spectral transformation to produce a larger pixel array (56, 70). The inverting spectral transformation is of a kind designed to convert high frequency spectral components not present in the original image or identified by the spectral array. These high-frequency terms of the inverting spectral transformation are either ignored or supplied with zero values. As a result, the final, larger pixel array has the same spectral distribution as the original pixel array, but a larger number of pixels.

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