Low-delay video coding adaptive Qp cascade method
A video coding, low-latency technology, applied in the field of video coding
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[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0066] This embodiment provides an adaptive Qp cascading method for low-delay video coding, including the following steps:
[0067] Step S1: Dividing the video sequence into multiple image groups, constructing a hierarchical structure of the image groups, each image group is composed of 4 frames, which are respectively at different levels;
[0068] Step S2: Deriving a rate-distortion optimization model according to the dependencies between different layers and image groups;
[0069] Step S3: Introduce relevant models, transform the rate-distortion optimization model into the problem of solving the optimal Qp, and at the same time update the model parameters to adapt the model to different video sequences; and refer to the Lagrangian multiplier Λ and the Newton-Raphson method to solve The best Qp of each layer of the model, reasonably allocate the Qp of...
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