The invention provides a method and
system for determining an
image compression model based on an asymmetric architecture, and the method comprises the steps: obtaining a trained basic neural network codec; fixing parameters of the analysis
encoder, the super-prior
encoder, the super-prior decoder and the
context model, and determining a lightweight synthesis decoder; fixing parameters of the analysis
encoder and the lightweight synthesis decoder, and determining a lightweight super-prior decoder, a lightweight
context model and a super-prior encoder subjected to joint training for the super-prior decoder and the
context model in combination with the super-prior encoder; and determining an asymmetric lightweight
image compression model according to the analysis encoder, the lightweight synthesis decoder, the super-prior encoder subjected to joint training, the lightweight super-prior decoder and the lightweight context model. According to the invention, the decoder
network structure is simplified, the calculation complexity of the decoding end is reduced, the decoding efficiency is improved, and the decoder can adapt to diversified low-end equipment.