METHOD AND APPARATUS FOR DATA RETRIEVAL IN A LIGHTFIELD DATABASE

摘要

A method and an apparatus for data retrieval in a lightfield database are described. An acquiring unit of the apparatus acquires a sample data. An operation unit determines a plurality of two-dimensional (2D) images from each 4D lightfield data of the lightfield database, and match the sample data with the determined 2D images according to geometrical parameters of the sample data and geometrical parameters of the 2D images. One of the 2D images is selected as a target image based on the matching result, and the 4D lightfield from which the target image is determined is retrieved.

主权项

1. A method of data retrieval in a lightfield database including four-dimensional (4D) lightfield data, comprising:
acquiring a sample data; determining a plurality of two-dimensional (2D) images from each 4D lightfield data of the lightfield database, each 2D image being different from another 2D image in at least one geometrical parameter; matching the sample data with the determined 2D images according to geometrical parameters of the sample data and geometrical parameters of the 2D images; selecting one of the 2D images as a target image based on the matching result; and retrieving the 4D lightfield data from which the target image is determined; wherein the geometrical parameters comprise at least one of resolution, viewpoint, viewing direction, focal plane, disparity of the sample data and the 2D images, and image object captured in the sample data and the 2D images.