Method, device, and storage medium for image generation

An electronic device, comprising:

• at least one processor;
• and at least one memory coupled to the at least one processor and storing instructions executed by the at least one processor, wherein the instructions, when executed by the at least one processor, cause the electronic device to perform acts comprising:
• obtaining a reference text set indicating an image generation objective, the reference text set comprising texts in a plurality of languages;
• generating at least one reference image based on a first text in a first language in the reference text set with an image generation model;
• converting the first text to a second text in a second language, the second language being different from the first language;
• and training a reward model based on the first text, the second text, the at least one reference image and labeled information for the at least one reference image, the labeled information indicating an image quality of the at least one reference image, and the reward model being configured to fine-tunning the image generation model.

A non-transitory computer-readable storage medium having a computer program stored thereon, the computer program being executable by a processor to implement acts comprising:

• obtaining a reference text set indicating an image generation objective, the reference text set comprising texts in a plurality of languages;
• generating at least one reference image based on a first text in a first language in the reference text set with an image generation model;
• converting the first text to a second text in a second language, the second language being different from the first language;
• and
• training a reward model based on the first text, the second text, the at least one reference image and labeled information for the at least one reference image, the labeled information indicating an image quality of the at least one reference image, and the reward model being configured to fine-tunning the image generation model.