University of Electronic Science and Technology of China

Han Qin

Yipeng Liu

Ce Zhu

Kai Liu

Yonghua Wang

A temporal domain rate distortion optimization based on video content characteristic and QP-&#x3bb; correction provides the temporal domain rate distortion optimization based on the video content characteristic and the QP-&#x3bb; correction for a new generation encoder AV1, wherein according to a previous temporal domain dependency relationship under an HEVC-RA coding structure, a feature of the new generation encoder AV1 and a video sequence feature, an aggregation distortion of a current coding unit and an affected future coding unit is estimated and ta propagation factor of the current coding unit in a temporal domain distortion propagation model is calculated by constructing a temporal domain distortion propagation chain, wherein a Lagrange multiplier is adjusted through a more accurate propagation factor to realize a temporal domain dependency rate distortion optimization, and a relationship of QP-&#x3bb; is re-corrected and an I frame is adjusted to achieve a better coding effect.

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Chengdu, China

Han Qin