城市肌理与图底关系整理
从给定底图提取建筑、道路和开放空间的图底层次。 图为AI生成概念示例。模板免费，生成按所选线路计费。
Prompt
Create a black-white-grey figure-ground diagram: charcoal building footprints, white streets, pale-grey open spaces, very pale blue-grey water, and a thin terracotta study boundary. With an upload, preserve footprints, street connections and boundaries without inventing unreadable areas. Otherwise depict a fictional district with dense small courtyards west, larger civic blocks east, one diagonal street and a narrow canal. Strict overhead view, crisp lines and restrained hierarchy, landscape 3:2 with white margins. No perspective facades, textures or decorative text; no area statistics or cadastral claims.