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GLIPv2: Unifying Localization and Vision-Language Understanding

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arxiv 2206.05836 v2 pith:GXNI7QLD submitted 2022-06-12 cs.CV cs.AIcs.CLcs.LGcs.MM

Haotian Zhang , Pengchuan Zhang , Xiaowei Hu , Yen-Chun Chen , Liunian Harold Li , Xiyang Dai , Lijuan Wang , Lu Yuan
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Jenq-Neng Hwang Jianfeng Gao
This is my paper
classification cs.CVcs.AIcs.CLcs.LGcs.MM
keywords tasksunderstandinglocalizationglipv2modeldetectionpre-trainingvision-language
verification ladder T0 review T1 audit T2 compute T3 formal
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We present GLIPv2, a grounded VL understanding model, that serves both localization tasks (e.g., object detection, instance segmentation) and Vision-Language (VL) understanding tasks (e.g., VQA, image captioning). GLIPv2 elegantly unifies localization pre-training and Vision-Language Pre-training (VLP) with three pre-training tasks: phrase grounding as a VL reformulation of the detection task, region-word contrastive learning as a novel region-word level contrastive learning task, and the masked language modeling. This unification not only simplifies the previous multi-stage VLP procedure but also achieves mutual benefits between localization and understanding tasks. Experimental results show that a single GLIPv2 model (all model weights are shared) achieves near SoTA performance on various localization and understanding tasks. The model also shows (1) strong zero-shot and few-shot adaption performance on open-vocabulary object detection tasks and (2) superior grounding capability on VL understanding tasks. Code will be released at https://github.com/microsoft/GLIP.

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