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Publication - Professor David Bull

    An adaptive QP offset determination method for HEVC


    Papadopoulos, MA, Zhang, A, Agrafiotis, D & Bull, D, 2017, ‘An adaptive QP offset determination method for HEVC’. in: 2016 IEEE International Conference on Image Processing (ICIP 2016): Proceedings of a meeting held 25-28 September 2016, Phoenix, Arizona, USA. Institute of Electrical and Electronics Engineers (IEEE), pp. 4220-4224


    This paper investigates the effect that the QP offset value has on the coding performance of HEVC. We relate QP offset to the type of texture content present in the sequence. These then are used to develop a low-complexity adaptive QP offset selection method. This enables in-loop configuration of the QP offset parameter in a way that is content dependent and utilizes available encoding statistics. The proposed adaptive method is found to offer average bitrate reductions ranging from 1.38% for dynamic texture sequences up to 1.59% for static texture sequences relative to the QP offset used in the JCT-VC common test conditions.

    Full details in the University publications repository