MODEL UPDATE METHOD, IMAGE GENERATION METHOD, DEVICE, AND MEDIUM

原文（中文）

A model update method, an image generation method, a device and a medium are provided. The method includes: acquiring sample text, a noisy image and a first noise distribution; using a second model to process the sample text and the noisy image to obtain a second noise distribution, where an initial value of the second model is determined based on the first model; and updating the second model based on the second noise distribution, the first noise distribution, and the target noise distribution, such that a difference between the target noise distribution and a third noise distribution predicted by the updated second model is greater than a difference between the second noise distribution and the target noise distribution, and a difference between the third noise distribution and the first noise distribution does not exceed a difference between the target noise distribution and the first noise distribution.