Patent ID: 8665942
Filing Date: 2014-03-04
Classification: G06T,H04N

Abstract:
1. A method for predicting a high dynamic range image block with differentially-coded prediction data, said method comprising: receiving high dynamic range (HDR) image data for a first image block, said first image block HDR image data comprising a first prediction data for said first image block, wherein said first prediction data comprises a scaling factor; receiving high dynamic range (HDR) image data for a second image block, said second image block HDR image data comprising a prediction difference data related to said first prediction data, wherein said prediction difference data comprises a differentially-coded scaling factor; determining a state associated with neighboring image blocks, wherein the state is for signaling whether or not the neighboring image blocks have the same scaling factor, and the determination is based on scaling factor of said first prediction data; combining said first prediction data and said prediction difference data to determine second prediction data for said second image block; and determining an HDR image block for the second image block based on the determined second prediction data for said second image block and the determined state.