Patent Document ID: 8244058
Application ID: 12130725
Patent Status: 1

Claim One:
1. A computer-implemented method, comprising: processing a light-field image in the frequency domain to render multiple angular views of a scene, wherein, said processing comprises: extracting multiple slices from a Fourier transform of the light-field image; and rendering the multiple angular views from the slices in accordance with subpixel centers of the slices, wherein each subpixel center corresponds to the DC point of the analog signal underlying the respective slice, wherein rendering the multiple angular views from the slices in accordance with the subpixel centers of the slices prevents or lessens artifacts in the angular views; wherein said processing further comprises applying a technique to determine the subpixel centers for the slices, wherein the technique is one of an oversampling technique or a phase multiplication technique; wherein said oversampling technique comprises generating the Fourier transform as an oversampled Fourier transform of the light-field image and determining the subpixel centers from the slices extracted from the oversampled Fourier transform; and wherein said phase multiplication technique comprises iteratively applying phase multiplication to each slice to locate the DC point of the analog signal underlying the respective slice.