Zoom to Essence: Trainless GUI Grounding by Inferring upon Interface Elements

Fuente: arXiv
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Hauptverfasser: Liu, Ziwei, Feng, Tao, Kang, Borui, Yang, Yanbing, Luo, Jun
Format: Preprint
Veröffentlicht: 2026
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author Liu, Ziwei
Feng, Tao
Kang, Borui
Yang, Yanbing
Luo, Jun
author_facet Liu, Ziwei
Feng, Tao
Kang, Borui
Yang, Yanbing
Luo, Jun
contents Multimodal Large Language Model (MLLM)-based Graphical User Interface (GUI) agents develop rapidly, with visual grounding that maps natural language instructions to target UI elements serving as the core capability. Existing GUI agents typically fine-tune MLLM on massive datasets to handle challenges in understanding instructions and UI interfaces, which not only incurs high data annotation costs but also makes performance dependent on data quality and distribution. To avoid such cumbersome yet ineffective training, we notice that complex UI interfaces can be decomposed into basic visual elements directly understandable by common MLLMs. Consequently, we propose ZoomUI that leverages inference scaling to guide common MLLMs in progressively anchor instruction elements to increasingly detailed interface elements. Specifically, ZoomUI first optimizes the latent thinking to transform original instruction into element visual features description, and subsequently leverages internal attention to iteratively zoom in target element interface region. Evaluations on extensive benchmarks demonstrate that ZoomUI reaches or even surpasses SOTA baselines.
format Preprint
id arxiv_https___arxiv_org_abs_2603_14448
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Zoom to Essence: Trainless GUI Grounding by Inferring upon Interface Elements
Liu, Ziwei
Feng, Tao
Kang, Borui
Yang, Yanbing
Luo, Jun
Machine Learning
Multimodal Large Language Model (MLLM)-based Graphical User Interface (GUI) agents develop rapidly, with visual grounding that maps natural language instructions to target UI elements serving as the core capability. Existing GUI agents typically fine-tune MLLM on massive datasets to handle challenges in understanding instructions and UI interfaces, which not only incurs high data annotation costs but also makes performance dependent on data quality and distribution. To avoid such cumbersome yet ineffective training, we notice that complex UI interfaces can be decomposed into basic visual elements directly understandable by common MLLMs. Consequently, we propose ZoomUI that leverages inference scaling to guide common MLLMs in progressively anchor instruction elements to increasingly detailed interface elements. Specifically, ZoomUI first optimizes the latent thinking to transform original instruction into element visual features description, and subsequently leverages internal attention to iteratively zoom in target element interface region. Evaluations on extensive benchmarks demonstrate that ZoomUI reaches or even surpasses SOTA baselines.
title Zoom to Essence: Trainless GUI Grounding by Inferring upon Interface Elements
topic Machine Learning
url https://arxiv.org/abs/2603.14448