Design mockups are essential instruments for visualizing and testing design
ideas. However, the process of generating mockups can be time-consuming and
challenging for designers. In this article, we present and evaluate two
different modalities for generating mockup ideas to support designers in their
work: (1) a sketch-based approach to generate mockups based on hand-drawn
sketches, and (2) a semantic-based approach to generate interfaces based on a
set of predefined design elements. To evaluate the effectiveness of these two
approaches, we conducted a series of experiments with 13 participants in which
we asked them to generate mockups using each modality. Our results show that
sketch-based generation was more intuitive and expressive, while semantic-based
generative AI obtained better results in terms of quality and fidelity. Both
methods can be valuable tools for UI designers looking to increase their
creativity and efficiency.

本文研究了设计模型生成的两种不同方式，分别是基于手绘草图生成设计模型和基于预定义设计元素生成界面的语义生成方式。结果表明，手绘生成更加直观易懂，而语义生成方式更加准确高保真度，两种方法都可以提高用户界面 (UI) 设计师的创造力和效率。