Patent ID: 8891863

Claim:
A method, comprising: receiving a high dynamic range (HDR) image; processing the received HDR image, wherein the received HDR image comprises (a) a coded baseline image that complies with the Digital Cinema Systems Specification of the Digital Cinema Initiative (DCI Systems Standard), and (b) one or more HDR-enhancement images are created from the received HDR image; wherein the coded baseline image comprises at least three color components, wherein the coded baseline image and the one or more HDR-enhancement images each provide enhancement information to allow reconstruction of an instance of the received HDR image using the baseline image and the HDR-enhancement images; computing a data packet, wherein the data packet comprises: a first data set that relates to the coded baseline image for the at least three color components; and a second data set that relates to the HDR-enhancement images, wherein the HDR enhancement images comprise: a first coded chroma residual image, a second chroma residual image, and a coded ratio image, wherein each of the residual images is configured to capture chroma information lost in creating the baseline image from the received HDR image, and wherein the first coded chroma residual image is embedded within a first portion of the data packet that also includes baseline data for a first color component, the second coded chroma residual image is embedded within a second portion of the data packet that also includes baseline data for a second color component, and the coded ratio image is embedded within a third portion of the data packet that also includes baseline data for a third color component; wherein computing the data packet comprises: generating a tone-mapped image based on the received HDR image; generating the coded ratio image, the coded ratio image comprising luminance ratio values generated by dividing luminance values of the received HDR image with luminance values of the tone-mapped image; applying the luminance ratio values to the received HDR image to create a re-mapped image; and determining the first coded chroma residual image and the second coded chroma residual image based on the re-mapped image and the tone-mapped image; and sending the computed data packet in a bit stream that conforms to the DCI Systems Standard.