Invention Grant
- Patent Title: Video coding using temporally coherent dynamic range mapping
-
Application No.: US15352682Application Date: 2016-11-16
-
Publication No.: US10205958B2Publication Date: 2019-02-12
- Inventor: Jens-Uwe Garbas , Herbert Thoma
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicant Address: DE Munich
- Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- Current Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- Current Assignee Address: DE Munich
- Agency: Keating & Bennett, LLP
- Priority: EP11166909 20110520
- Main IPC: H04N19/70
- IPC: H04N19/70 ; H04N19/98 ; H04N19/105 ; H04N19/124 ; H04N19/136 ; H04N19/172 ; H04N19/176 ; H04N19/503 ; H04N19/40

Abstract:
A more efficient co-use of dynamic range mapping on the one hand and temporal prediction on the other hand such as, for example, in order to code HDR frame sequences, is achieved by exploiting the concept of weighted prediction in order to transition from the mapping parameter from the reference frame to the currently temporally predicted frame. By this measure, the temporal prediction does not fail and despite the frame-wise variation in the dynamic range mapping, encoding efficiency is, thus, maintained. As a favorable side aspect, weighted temporal prediction is already within the capabilities of existing video coding stages such as, for example, the H.264/AVC.
Public/Granted literature
- US20170064324A1 VIDEO CODING USING TEMPORALLY COHERENT DYNAMIC RANGE MAPPING Public/Granted day:2017-03-02
Information query