Extended depth of field and variable center of perspective in light-field processing

摘要

According to various embodiments, the system and method of the present invention process light-field image data in a manner that reduces artifacts and that yields 2-D images with extended depth of field, and with variable placement of the center of perspective. Center of perspective can be varied based on user input or on pre-specified parameters. Various techniques for improving the presentation of light-field images with variable center of perspective are described, and for performing other effects in connection with projection of light-field images.

主权项

1. A method for removing artifacts in two-dimensional images projected from light-field data, comprising:
a) at a processor, retrieving a two-dimensional image projected from light-field data; b) at the processor, generating at least one reduced-resolution representation of the two-dimensional image, each reduced-resolution representation comprising a plurality of pixels, each pixel having a value; c) for each reduced-resolution representation of the two-dimensional image, performing the steps of:
c.1) for each pixel in the reduced-resolution representation, identifying a plurality of corresponding target pixels in a higher-resolution representation, each target pixel having a value;c.2) for each identified target pixel, determining an influence metric; andc.3) for each identified target pixel, responsive to the influence metric of the target pixel being less than a predetermined threshold value, replacing the value of the target pixel with a weighted sum of its value and the value of the corresponding pixel in the reduced-resolution representation; and d) storing the higher-resolution image in a storage device.