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- W2023150488 abstract "A global brightness-fluctuation compensation (GBC) scheme is proposed to improve coding efficiency for video scenes that contain global brightness fluctuations caused by fade- in/out, camera-iris adjustment, and so on. In this scheme, a set of two brightness-fluctuation parameters, which represent contrast and offset components of the brightness fluctuation in the whole frame, is first estimated. The brightness fluctuation is then compensated using the parameters. Furthermore, a block-by-clock ON/OFF control method for GBC is introduced to improve coding performance even for scenes including local fluctuations in brightness caused by camera flashed, spotlights, and the like. In this method, GBC is performed only on the blocks where the sum of the squared error produced using GBC is less than that produced without GBC. Simulation results show that the proposed GBC scheme with the ON/OFF control method greatly improves coding efficiency, especially for sequences with considerable global brightness fluctuation." @default.
- W2023150488 created "2016-06-24" @default.
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- W2023150488 date "1997-01-10" @default.
- W2023150488 modified "2023-10-18" @default.
- W2023150488 title "<title>Global brightness-fluctuation compensation in video coding</title>" @default.
- W2023150488 doi "https://doi.org/10.1117/12.263208" @default.
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