different level of visual granularity. Image generation is carried out through
our newly introduced Next Visual Granularity (NVG) generation framework, which
generates a visual granularity sequence beginning from an empty image and
progressively refines it, from global layout to fine details, in a structured
manner. This iterative process encodes a hierarchical, layered representation
that offers fine-grained control over the generation process across multiple
granularity levels. We train a series of NVG mo